Why do the first 4 hexagrams of the Li Palace share Gua Qi 3, while the last 4 change their Gua Qi number?

Because in Xuan Kong Da Gua, a hexagram's spatial Gua Qi number (1–9) is governed 100% by its Upper (Outer) Trigram. In the Jing Fang transformation sequence, the Pure Root, 1st Generation, 2nd Generation, and 3rd Generation only flip lines in the Lower (Inner) Trigram, preserving Li ☲ on top (Gua Qi 3). In the 4th Generation, 5th Generation, Wandering Soul, and Returning Soul, the line changes move into the Upper Trigram, shifting their spatial Gua Qi while retaining their Li Palace ancestral soul.

Which hexagrams in the Li Group (Fire ☲ · Ly Cung) are strongest for Period 9 (2024–2043)?

For Sitting Mountain, high terrain, and executive backing (Direct Spirit / Chinh Than), the crown jewel is #64 Hỏa Thủy Vị Tế (火水未濟 ䷿), the 3rd-Generation Parent Hexagram carrying Star Period 9 at Thân – Canh (236.250°–241.875°). For Main Gate, Water Mouth, and driveway intake (Indirect Spirit / Linh Than), the prime choice is #30 Ly Vi Hỏa (離為火 ䷝), the Pure Root Hexagram carrying Star Period 1 (forming 1+9=10 Sum-of-Ten with Period 9) at Dậu (270.000°–275.625°).

How do Sum of Ten (He Shi) and Difference of Five (He Sheng Cheng) work for the Li Group (Fire ☲ · Ly Cung)?

All 8 Upper-Li compass hexagrams carry Gua Qi 3. They achieve Husband-Wife Sum-of-Ten (He Shi) when paired with Kan Group ☵ (Gua Qi 7 Fire · 3 + 7 = 10), and achieve He Tu Generative Difference-of-Five (He Sheng Cheng) when paired with Zhen Group ☳ (Gua Qi 8 Wood · 3 – 8 = 5).

☲ XUAN KONG DA GUA · 8 TRIGRAM PALACES Gua Qi 3 · Yang Wood (He Tu 3–8 Companion Wood) • Early Heaven 3 / Later Heaven 9

Li Group (Fire ☲ · Ly Cung) in Xuan Kong Da Gua (離宮八卦): 8 Palace Hexagrams, 384-Yao Degrees & Period 9 Mastery

Q: Which 8 hexagrams belong to the Li Group (Fire ☲ · Ly Cung) in Xuan Kong Da Gua?

In the Jing Fang 8-Palace lineage, the Li Group (Fire ☲ · Ly Cung) comprises #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #4 Sơn Thủy Mông (䷃), #59 Phong Thủy Hoán (涣), #6 Thiên Thủy Tụng (䷅), #13 Thiên Hỏa Đồng Nhân (䷌). On the San Yuan 360-degree Upper-Trigram Gua Qi compass ring, the 8 hexagrams sharing Upper Trigram Li ☲ (all carrying Gua Qi 3 — Yang Wood (He Tu 3–8 Companion Wood)) are #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), #35 Hỏa Địa Tấn (䷢).

Two luminous Yang lines embrace a hollow Yin heart, kindling the solar intelligence that now rules the world for twenty years. Welcome to the Li Palace Group (離宮八卦 — Nhóm Quái Ly ☲), the sovereign macro-trigram of Lower Cycle Period 9 (2024–2043)! In Xuan Kong Da Gua (玄空大卦), Li bridges three sacred dimensions simultaneously: it holds Early Heaven Number 3 at the eastern sunrise, Later Heaven Number 9 at the southern zenith, and Gua Qi Number 3 (He Tu 3–8 Yang Wood) on the outer trigram compass ring—meaning its inner trigram Qi (3 Wood) perpetually feeds its Later Heaven macro-era Spirit (9 Fire)!

Master Ung Khiem (Thầy Ưng Khiêm)

Classical Feng Shui & East Asian Metaphysics Master · UK MASTER ACADEMY

Published June 24, 2026 · Updated October 15, 2026
7,800-word Scholarly Monograph · 28 min read
🇻🇳 Bản tiếng Việt

Li Group (Fire ☲ · Ly Cung) in Xuan Kong Da Gua Feng Shui

Core Trigram Palace Dossier: Li Group ☲ Fire

Palace Family:

Li Group (Fire ☲ · Ly Cung) (離宮八卦 · Middle Daughter (Trung Nữ 中女))

Cosmic Image:

☲ Clinging Fire / Radiance (Huǒ 火) — Trigram Element: Radiant Yin Fire (Âm Hỏa 陰火) · Period 9 Macro Ruler!

Early & Later Bagua:

Early Heaven #3 (Due East (Early Heaven Left Solar Sunrise)) · Later Heaven #9 (Due South (Bính – Ngọ – Đinh · 157.5°–202.5°))

Da Gua Outer Qi:

Gua Qi 3 — Yang Wood (He Tu 3–8 Companion Wood)

Jing Fang 8 Gua:

#30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #4 Sơn Thủy Mông (䷃), #59 Phong Thủy Hoán (涣), #6 Thiên Thủy Tụng (䷅), #13 Thiên Hỏa Đồng Nhân (䷌)

Upper-Li Ring:

#30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), #35 Hỏa Địa Tấn (䷢)

Period 9 Crown Pair:

Direct Spirit: #64 Hỏa Thủy Vị Tế ䷿ (Period 9) · Indirect Spirit: #30 Ly Vi Hỏa ䷝ (Period 1)

✦ Classical Key: Why is the Li Group the most sought-after palace between 2024 and 2043? Because Later Heaven Li 9 rules Period 9! Within this group, #64 Fire Water Wei Ji (䷿, Gua Qi 3 Wood, Star Period 9) is the supreme Period-9 Direct Spirit Parent Hexagram, pairing across the 180° axis with #63 Water Fire Ji Ji (䷾, Gua Qi 7 Fire, Star Period 9) to form 3+7=10 Sum-of-Ten AND Double Period-9 Pure Qi!

Executive Summary for Practitioners & AI Search (GEO Summary)

Dual Classification Mastery: In Xuan Kong Da Gua (玄空大卦), the Li Group (Fire ☲ · Ly Cung) is analyzed across two interlocking axes: (1) the Jing Fang 8-Palace Lineage (Bát Cung Kinh Phòng) comprising #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #4 Sơn Thủy Mông (䷃), #59 Phong Thủy Hoán (涣), #6 Thiên Thủy Tụng (䷅), #13 Thiên Hỏa Đồng Nhân (䷌), and (2) the San Yuan Upper-Trigram Compass Ring comprising all 8 hexagrams with Li ☲ as their Upper (Outer) Trigram (#30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), #35 Hỏa Địa Tấn (䷢)), which universally carry Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)).
Why the First 4 Hexagrams Overlap Both Systems: In Jing Fang's 8-step line transformation, Steps 0, 1, 2, and 3 (#30 Ly Vi Hỏa, #56 Hỏa Sơn Lữ, #50 Hỏa Phong Đỉnh, and #64 Hỏa Thủy Vị Tế) transform only the Lower (Inner) Trigram while keeping Li ☲ intact on top. Thus they hold Gua Qi 3 on the Luo Pan and belong to both lists simultaneously.
Supreme Resonance Partners: Every Upper-Li hexagram (Gua Qi 3) locks into Sum of Ten (He Shi 合十) with the Kan Group ☵ (Gua Qi 7 Fire · 3 + 7 = 10) and locks into He Tu Generative Difference of Five (He Sheng Cheng 合生成) with the Zhen Group ☳ (Gua Qi 8 Wood · 3 – 8 = 5).
Period 9 (2024–2043) Mountain & Water Formula: Anchor the Sitting Mountain, CEO Office, or Master Bed on the 3rd-Generation Parent Hexagram #64 Hỏa Thủy Vị Tế (火水未濟 ䷿) at Thân – Canh (236.250°–241.875°) (carrying Timely Star Period 9 Direct Spirit), and open the Main Gate, Driveway, or Water Mouth on the Pure Root Hexagram #30 Ly Vi Hỏa (離為火 ䷝) at Dậu (270.000°–275.625°) (carrying Star Period 1 to complete 1 + 9 = 10 Indirect Spirit wealth intake).
Sub-Degree 384-Yao Precision: Each hexagram spans 360° ÷ 64 = 5.625°, subdivided into 6 individual lines (yao) of 0.9375° each. Always align structural centerlines onto the Red Jewel Lines (Hồng Tâm Cát Hào)—most notably Yao 2 and Yao 5—while maintaining at least 0.75° clearance from inter-hexagram Void Lines (Không Vong).

1. Cosmological Identity, Early/Later Heaven Numerology & Classical Canon of the Li Group (Fire ☲ · Ly Cung)

Why do two houses sitting side by side on the exact same street—built in the same year and facing the same general compass octant—experience radically opposite destinies? One household rises into ministerial rank and generational liquidity. Its neighbor suffers relentless litigation, insolvent cash flow, and chronic illness. Standard 15°-mountain compasses cannot explain this divergence. Only Xuan Kong Da Gua (玄空大卦)—which slices the 360° horizon into 64 Early Heaven Hexagrams (5.625° per hexagram) and 384 individual yao lines (0.9375° per line)—exposes the sub-degree truth.

At the heart of this 64-hexagram cosmos stands the Li Group (Fire ☲ · Ly Cung) (離宮八卦). To master its eight constituent hexagrams on a San Yuan Luo Pan, a practitioner must first internalize the three distinct numerical identities that Trigram Li (離 ☲) carries across the Theoretical Foundations of Chinese metaphysics:

1. Fu Xi Early Heaven Bagua Identity (Tiên Thiên Bát Quái — Primordial Cosmic Form): In Fu Xi's Early Heaven sequence, Li ☲ holds Early Heaven Number 3 and resides at Due East (Early Heaven Left Solar Sunrise), embodying Clinging Fire / Radiance (Huǒ 火) and the archetypal family role of Middle Daughter (Trung Nữ 中女).
2. King Wen Later Heaven Bagua Identity (Hậu Thiên Bát Quái — Mundane Spatial Sector): When the trigrams descend into terrestrial manifestation under King Wen's Later Heaven arrangement, Li ☲ moves to Due South (Bính – Ngọ – Đinh · 157.5°–202.5°) and governs Later Heaven Luo Shu Number 9, radiating the trigram Five Phase of Radiant Yin Fire (Âm Hỏa 陰火) · Period 9 Macro Ruler!.
3. San Yuan Xuan Kong Da Gua Outer Qi Identity ( Tiên Hậu Thiên Hợp Lạc Quái Khí): When Fu Xi's Early Heaven Bagua is superimposed directly onto the Nine Palaces of the Luo Shu Magic Square (“Nine at the head, One at the foot; Three on the left, Seven on the right; Two and Four at the shoulders; Six and Eight at the feet”), the Early Heaven position of Li ☲ lands on Luo Shu Number 3! Converted through the He Tu Creation Formula (1–6 Water, 2–7 Fire, 3–8 Wood, 4–9 Metal), every hexagram with Li ☲ as its Upper (Outer) Trigram carries Gua Qi 3 — Yang Wood (He Tu 3–8 Companion Wood).

「離宮九紫當元旺，火水未濟正神方；坎離交媾合十數，文ستر武貴姓名揚。」 Lí gōng jiǔ zǐ dāng yuán wàng, Huǒ Shuǐ Wèi Jì zhèng shén fāng; Kǎn Lí jiāo gòu hé shí shù, wén huī wǔ guì xìng míng yáng.
Nine Purple of the Li Palace reigns supreme in the current cycle, with Fire Water Wei Ji holding the Direct Spirit throne; when Kan and Li mate in Sum-of-Ten numbers, literary brilliance and noble rank spread one's name afar.
— San Yuan Xuan Kong Da Gua Oral Transmission («Di Li Bian Zheng Secret Commentary»)

Read that classical verse again. Grandmaster Yang Yun Song and Grandmaster Jiang Da Hong never spoke of vague 45° sectors when they promised scholarly nobility and enduring dynastic wealth. They spoke of locking the Incoming Dragon, Sitting Mountain, Facing Direction, and Water Mouth into the pure hexagram veins of the Li Group (Fire ☲ · Ly Cung) and its resonant partners! Let us also recall the foundational canon of the Book of Changes (I Ching 周易) regarding the virtue of this palace:

「離，麗也；日月麗乎天，百穀草木麗乎土，重明以麗乎正，乃化成天下。」 Lí, lì yě; rì yuè lì hū tiān, bǎi gǔ cǎo mù lì hū tǔ, chóng míng yǐ lì hū zhèng,乃 huà chéng tiān xià.
Li means clinging and radiant illumination. The sun and moon cling to Heaven; the hundred grains, grasses, and trees cling to Earth; double brightness clinging to what is upright transforms and perfects all under Heaven.
— «Book of Changes · Commentary on the Judgments of Li» (周易·離卦·彖傳)

Numbers govern form. Form channels Qi. When you step onto a site with your Luo Pan, understanding how Early Heaven 3, Later Heaven 9, and Da Gua Outer Qi 3 interlock within the Li Group (Fire ☲ · Ly Cung) separates authentic lineage mastery from textbook guesswork.

2. Dual Classification Mechanics: Jing Fang 8-Palace Lineage vs. San Yuan Upper-Trigram Gua Qi 3 Ring

Stop right here. This is the exact junction where 90% of self-taught students get confused when cross-referencing classical I Ching manuals with a San Yuan Xuan Kong Da Gua compass! Why do some texts list the 8 hexagrams of the Li Group (Fire ☲ · Ly Cung) as #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #4 Sơn Thủy Mông (䷃), #59 Phong Thủy Hoán (涣), #6 Thiên Thủy Tụng (䷅), #13 Thiên Hỏa Đồng Nhân (䷌), whereas the outer Gua Qi table of a San Yuan Luo Pan lists the 8 hexagrams of Gua Qi 3 (Li ☲) as #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), #35 Hỏa Địa Tấn (䷢)? Both lists are 100% authentic. They simply represent the two orthogonal axes of The System of 64 Hexagrams:

AXIS 1 · ANCESTRAL SOUL

Jing Fang's Eight-Palace Transformation (Bát Cung Kinh Phòng 京房八宮)

Formulated by Western Han dynasty master Jing Fang (京房, 77–37 BCE) in the Jing Shi Yi Zhuan. Starting from the doubled pure hexagram #30 Ly Vi Hỏa (䷝), lines transform sequentially from bottom to top: 1st Yao (1st Gen), 2nd Yao (2nd Gen), 3rd Yao (3rd Gen), 4th Yao (4th Gen), 5th Yao (5th Gen), back to 4th Yao (Wandering Soul / Du Hồn), and finally restoring the lower 3 lines to the root trigram (Returning Soul / Quy Hồn). The 6th (top) line never changes because it guards the ancestral宗廟 temple.

AXIS 2 · COMPASS GUA QI

San Yuan Upper-Trigram Gua Qi Ring (Ngoại Quái Quái Khí 卦氣環)

On the 360° San Yuan Luo Pan, spatial Gua Qi (1–9) is determined exclusively by the Upper (Outer) Trigram, while temporal Gua Yun / Star Period (1–9) is determined by comparing which lines differ between the Upper and Lower Trigrams. Therefore, all 8 hexagrams that share Li ☲ as their Upper Trigram share Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)) and span all 8 Star Periods (1, 2, 3, 4, 6, 7, 8, 9).

Look at the mathematical bridge between Axis 1 and Axis 2. In Jing Fang's 8-step transformation of the Li Group (Fire ☲ · Ly Cung):

Steps 0, 1, 2, and 3 (Pure Root #30, 1st Gen #56, 2nd Gen #50, and 3rd Gen #64): Because only the Lower (Inner) Trigram lines change during the first three generations, their Upper (Outer) Trigram remains Li ☲! Consequently, these first four hexagrams carry Gua Qi 3 and belong to both the Jing Fang Li Palace and the Upper-Li Compass Ring! Specifically, Step 0 (#30 Ly Vi Hỏa) is the Period 1 Upper-Cycle Parent, Step 1 (#56 Hỏa Sơn Lữ) is the Period 2 Jiangdong Hexagram, Step 2 (#50 Hỏa Phong Đỉnh) is the Period 6 North-South Opposite Hexagram, and Step 3 (#64 Hỏa Thủy Vị Tế) is the Period 9 Lower-Cycle Parent!
Steps 4, 5, 6, and 7 (4th Gen #4, 5th Gen #59, Wandering Soul #6, and Returning Soul #13): Once the Jing Fang transformation climbs into the 4th and 5th lines, the Upper Trigram changes from Li ☲ into four other trigrams! On the Luo Pan, these four hexagrams adopt the Gua Qi number of their new Upper Trigram—while carrying Star Periods 8 (4th Gen), 4 (5th Gen), 7 (Wandering Soul), and 3 (Returning Soul).
The 4 Cross-Palace Complements (#14, #38, #21, and #35): Conversely, four hexagrams born as the 4th Gen, 5th Gen, Wandering Soul, and Returning Soul of other Jing Fang palaces acquire Li ☲ as their Upper Trigram—supplying Star Periods 4, 3, 8, and 7 inside the Gua Qi 3 compass family!

Figure 1: The 8 Jing Fang Palace Hexagrams (Bát Cung Kinh Phòng) of the Li Group (Fire ☲ · Ly Cung) showing line-transformation steps, Gua Qi numbers, Star Periods, and 24-Mountain arcs.

By mastering both sets—all 8 Jing Fang Palace hexagrams and their 4 Upper-Li Compass Ring complements (12 hexagrams in total, with 4 shared at the core)—you command the entire theoretical and practical spectrum of the Li Group (Fire ☲ · Ly Cung).

3. Master Reference Matrix: Complete 8 Jing Fang Palace Hexagrams & 8 Upper-Li Compass Hexagrams

Before examining each hexagram line by line, consult the two master reference tables below. Table 1 synthesizes the 8 Jing Fang Palace Hexagrams of the Li Group (Fire ☲ · Ly Cung), while Table 2 synthesizes the 8 San Yuan Upper-Li Compass Ring Hexagrams that share Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)).

Table 1: The 8 Jing Fang Palace Hexagrams (Bát Cung Kinh Phòng) of the Li Group (Fire ☲ · Ly Cung)
King Wen # & Hexagram	Jing Fang Step	Upper / Lower	Da Gua Qi & Element	Gua Yun (Star Period)	360° Compass Arc & Red Yao	Period 9 (2024–2043) Role
#30 Ly Vi Hỏa Li (The Clinging Fire) · 離為火 ䷝	0. Pure Root (Bát Thuần)	Li ☲ / Li ☲	Gua Qi 3 Yang Wood (3-8 Wood)	Period 1 Greedy Wolf (Tan Lang)	Dậu (270.000°–275.625°) Red: Yao 2 (270.938°–271.875°), Yao 5 (273.750°–274.688°)	★ Period 9 Ruling Trigram Root · Sum-of-Ten Indirect Spirit (Period 1 + Period 9 = 10)
#56 Hỏa Sơn Lữ Lu (The Wanderer / Traveler) · 火山旅 ䷷	1. 1st Gen (Nhất Thế)	Li ☲ / Gen ☶	Gua Qi 3 Yang Wood (3-8 Wood)	Period 2 Giant Gate (Ju Men)	Thân (230.625°–236.250°) Red: Yao 2 (231.563°–232.500°), Yao 5 (234.375°–235.313°)	Upper Cycle Indirect Spirit (Gua Qi 3 Wood · Period 2)
#50 Hỏa Phong Đỉnh Ding (The Cauldron) · 火風鼎 ䷱	2. 2nd Gen (Nhị Thế)	Li ☲ / Xun ☴	Gua Qi 3 Yang Wood (3-8 Wood)	Period 6 Military Arts (Wu Qu)	Thân (225.000°–230.625°) Red: Yao 2 (225.938°–226.875°), Yao 5 (228.750°–229.688°), Yao 6 (229.688°–230.625°)	★ Supreme Imperial Cauldron Hexagram (Lower Cycle Period 6 + Gua Qi 3 Wood)
#64 Hỏa Thủy Vị Tế Wei Ji (Before Completion) · 火水未濟 ䷿	3. 3rd Gen (Tam Thế)	Li ☲ / Kan ☵	Gua Qi 3 Yang Wood (3-8 Wood)	Period 9 Right Assistant (You Bi)	Thân – Canh (236.250°–241.875°) Red: Yao 2 (237.188°–238.125°), Yao 4 (239.063°–240.000°), Yao 5 (240.000°–240.938°)	★ TIMELY PERIOD 9 PARENT DIRECT SPIRIT (Period 9 + Gua Qi 3 Wood)
#04 Sơn Thủy Mông Meng (Youthful Folly / Education) · 山水蒙 ䷃	4. 4th Gen (Tứ Thế)	Gen ☶ / Kan ☵	Gua Qi 6 Yin Water (1-6 Water)	Period 8 Left Assistant (Zuo Fu)	Tý – Quý (5.625°–11.250°) Red: Yao 2 (6.563°–7.500°), Yao 5 (9.375°–10.313°)	Lower Cycle Direct Spirit Group (4th Gen of Li · Gua Qi 6 Water · Period 8)
#59 Phong Thủy Hoán Huan (Dispersion / Dissolving) · 風水渙涣	5. 5th Gen (Ngũ Thế)	Xun ☴ / Kan ☵	Gua Qi 2 Yin Fire (2-7 Fire)	Period 4 Literary Arts (Wen Qu)	Ất – Thìn (101.250°–106.875°) Red: Yao 2 (102.188°–103.125°), Yao 4 (104.063°–105.000°), Yao 5 (105.000°–105.938°)	Upper Cycle Indirect Spirit (5th Gen of Li · Gua Qi 2 Fire · Period 4)
#06 Thiên Thủy Tụng Song (Conflict / Litigation) · 天水訟 ䷅	6. Wandering Soul (Du Hồn)	Qian ☰ / Kan ☵	Gua Qi 9 Yang Metal (4-9 Metal)	Period 7 Broken Army (Po Jun)	Đinh – Mùi (191.250°–196.875°) Red: Yao 4 (194.063°–195.000°), Yao 5 (195.000°–195.938°)	Upper-Qian Gua Qi 9 Metal · Lower Cycle Period 7 Group (Wandering Soul of Li)
#13 Thiên Hỏa Đồng Nhân Tong Ren (Fellowship) · 天火同人 ䷌	7. Returning Soul (Quy Hồn)	Qian ☰ / Li ☲	Gua Qi 9 Yang Metal (4-9 Metal)	Period 3 Rank / Lu Cun	Càn – Hợi (311.250°–316.875°) Red: Yao 1 (311.250°–312.188°), Yao 2 (312.188°–313.125°), Yao 5 (315.000°–315.938°)	Upper-Qian Gua Qi 9 Metal · Period 3 Indirect Spirit (Returning Soul of Li)

Table 2: The 8 San Yuan Compass Ring Hexagrams Sharing Upper Trigram Li ☲ (All Carrying Gua Qi 3 — Yang Wood (He Tu 3–8 Companion Wood))
King Wen # & Hexagram	Upper / Lower	Outer Gua Qi	Star Period (Gua Yun)	Jing Fang Overlap	360° Fu Xi Compass Arc	Sum-of-Ten (He Shi) Targets
#30 Ly Vi Hỏa (離為火 ䷝)	Li ☲ / Li ☲	Gua Qi 3 (Yang Wood)	Period 1 (Greedy Wolf (Tan Lang))	Yes (Steps 0–3)	Dậu (270.000°–275.625°)	Gua Qi 7 (He Shi) · Period 9 (He Shi)
#56 Hỏa Sơn Lữ (火山旅 ䷷)	Li ☲ / Gen ☶	Gua Qi 3 (Yang Wood)	Period 2 (Giant Gate (Ju Men))	Yes (Steps 0–3)	Thân (230.625°–236.250°)	Gua Qi 7 (He Shi) · Period 8 (He Shi)
#50 Hỏa Phong Đỉnh (火風鼎 ䷱)	Li ☲ / Xun ☴	Gua Qi 3 (Yang Wood)	Period 6 (Military Arts (Wu Qu))	Yes (Steps 0–3)	Thân (225.000°–230.625°)	Gua Qi 7 (He Shi) · Period 4 (He Shi)
#64 Hỏa Thủy Vị Tế (火水未濟 ䷿)	Li ☲ / Kan ☵	Gua Qi 3 (Yang Wood)	Period 9 (Right Assistant (You Bi))	Yes (Steps 0–3)	Thân – Canh (236.250°–241.875°)	Gua Qi 7 (He Shi) · Period 1 (He Shi)
#14 Hỏa Thiên Đại Hữu (火天大有 ䷍)	Li ☲ / Qian ☰	Gua Qi 3 (Yang Wood)	Period 3 (Rank / Lu Cun)	Cross-Palace (Steps 4–7)	Canh – Dậu (264.375°–270.000°)	Gua Qi 7 (He Shi) · Period 7 (He Shi)
#38 Hỏa Trạch Khuê (火澤睽 ䷥)	Li ☲ / Dui ☱	Gua Qi 3 (Yang Wood)	Period 8 (Left Assistant (Zuo Fu))	Cross-Palace (Steps 4–7)	Canh (258.750°–264.375°)	Gua Qi 7 (He Shi) · Period 2 (He Shi)
#21 Hỏa Lôi Phệ Hạp (火雷噬嗑 ䷔)	Li ☲ / Zhen ☳	Gua Qi 3 (Yang Wood)	Period 4 (Literary Arts (Wen Qu))	Cross-Palace (Steps 4–7)	Thân – Canh (247.500°–253.125°)	Gua Qi 7 (He Shi) · Period 6 (He Shi)
#35 Hỏa Địa Tấn (火地晉 ䷢)	Li ☲ / Kun ☷	Gua Qi 3 (Yang Wood)	Period 7 (Broken Army (Po Jun))	Cross-Palace (Steps 4–7)	Canh (241.875°–247.500°)	Gua Qi 7 (He Shi) · Period 3 (He Shi)

Figure 2: Comparison of the 8 Upper-Li Compass Ring Hexagrams (all carrying Gua Qi 3) and their overlap with the Jing Fang Li Palace.

Notice the mathematical elegance in Table 2: within the 8 hexagrams sharing Upper Trigram Li ☲, every single Star Period from 1 to 9 (excluding the central 5) appears exactly once (1, 2, 3, 4, 6, 7, 8, 9). Four belong to the Upper Cycle (Periods 1–2–3–4) and four belong to the Lower Cycle (Periods 6–7–8–9).

4. Deep-Dive Monograph Pt. I: Pure Root (Bát Thuần), 1st Generation, 2nd Generation & 3rd Generation Hexagrams

Let us now dissect the first four hexagrams of the Li Group (Fire ☲ · Ly Cung): #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), and #64 Hỏa Thủy Vị Tế (䷿). Because all four retain Li ☲ as their Upper (Outer) Trigram, all four carry Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)) and progress from Pure Root (Period 1) through 1st Gen (Period 2) and 2nd Gen (Period 6) to culmination at the 3rd-Generation Parent Hexagram (Period 9)!

King Wen #30 · Lí Wéi Huǒ · Jing Fang Step 0

#30. Ly Vi Hỏa — Li (The Clinging Fire) (離為火 ䷝) · Gua Qi 3 & Period 1

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Li ☲. Jing Fang Step 0: Pure Palace Root (Bát Thuần Quái · 八純卦). Because its Upper (Outer) Trigram is Li ☲ and its Jing Fang transformation remains within the lower three lines, #30 Ly Vi Hỏa (離為火 ䷝) belongs simultaneously to the Jing Fang Li Palace and the San Yuan Upper-Li Gua Qi 3 Compass Ring. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #30 Ly Vi Hỏa carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 1 · Greedy Wolf (Tan Lang) (Upper Cycle Parent (Periods 1–4)), forming temporal Sum-of-Ten with Star Period 9 (1 + 9 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Dậu (270.000°–275.625°) within the Dậu (Due W) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (270.938°–271.875°), Yao 5 (273.750°–274.688°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 270.000° ±0.75° (Due West Cardinal Void), 275.625° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): ★ Period 9 Ruling Trigram Root · Sum-of-Ten Indirect Spirit (Period 1 + Period 9 = 10). Pure Li Fire Trigram governing the 20-year Period 9 macro-era (2024–2043), while its Da Gua Star Period 1 forms 1+9=10 Sum-of-Ten Indirect Spirit and Gua Qi 3 pairs with Kan 7 (3+7=10)! When activating #30 Ly Vi Hỏa via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

King Wen #56 · Huǒ Shān Lǚ · Jing Fang Step 1

#56. Hỏa Sơn Lữ — Lu (The Wanderer / Traveler) (火山旅 ䷷) · Gua Qi 3 & Period 2

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Gen ☶. Jing Fang Step 1: 1st Generation (Nhất Thế Quái · 一世卦). Because its Upper (Outer) Trigram is Li ☲ and its Jing Fang transformation remains within the lower three lines, #56 Hỏa Sơn Lữ (火山旅 ䷷) belongs simultaneously to the Jing Fang Li Palace and the San Yuan Upper-Li Gua Qi 3 Compass Ring. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #56 Hỏa Sơn Lữ carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 2 · Giant Gate (Ju Men) (Upper Cycle Jiangdong (1st Yao Change · 1st Gen of Li)), forming temporal Sum-of-Ten with Star Period 8 (2 + 8 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Thân (230.625°–236.250°) within the Thân (SW/WSW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (231.563°–232.500°), Yao 5 (234.375°–235.313°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 230.625° ±0.45°, 236.250° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper Cycle Indirect Spirit (Gua Qi 3 Wood · Period 2). Favors international trade, logistics, hospitality, and cross-border commerce when tapped on Yao 5 ('shoots a pheasant with one arrow, wins praise and office'). When activating #56 Hỏa Sơn Lữ via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

King Wen #50 · Huǒ Fēng Dǐng · Jing Fang Step 2

#50. Hỏa Phong Đỉnh — Ding (The Cauldron) (火風鼎 ䷱) · Gua Qi 3 & Period 6

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Xun ☴. Jing Fang Step 2: 2nd Generation (Nhị Thế Quái · 二世卦). Because its Upper (Outer) Trigram is Li ☲ and its Jing Fang transformation remains within the lower three lines, #50 Hỏa Phong Đỉnh (火風鼎 ䷱) belongs simultaneously to the Jing Fang Li Palace and the San Yuan Upper-Li Gua Qi 3 Compass Ring. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #50 Hỏa Phong Đỉnh carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 6 · Military Arts (Wu Qu) (Lower Cycle North-South Opposite (2nd Gen of Li)), forming temporal Sum-of-Ten with Star Period 4 (6 + 4 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Thân (225.000°–230.625°) within the Thân (SW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (225.938°–226.875°), Yao 5 (228.750°–229.688°), Yao 6 (229.688°–230.625°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 225.000° ±0.75° (Khôn–Thân 45° Corner Void), 230.625° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): ★ Supreme Imperial Cauldron Hexagram (Lower Cycle Period 6 + Gua Qi 3 Wood). Wood beneath Fire refines gold and jade inside the Sacred Cauldron (Yao 5 golden rings, Yao 6 jade rings). Premier hexagram for Kitchen Stove alignment, R&D centers, and wealth alchemy. When activating #50 Hỏa Phong Đỉnh via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

King Wen #64 · Huǒ Shuǐ Wèi Jì · Jing Fang Step 3

#64. Hỏa Thủy Vị Tế — Wei Ji (Before Completion) (火水未濟 ䷿) · Gua Qi 3 & Period 9

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Kan ☵. Jing Fang Step 3: 3rd Generation (Tam Thế Quái · 三世卦). Because its Upper (Outer) Trigram is Li ☲ and its Jing Fang transformation remains within the lower three lines, #64 Hỏa Thủy Vị Tế (火水未濟 ䷿) belongs simultaneously to the Jing Fang Li Palace and the San Yuan Upper-Li Gua Qi 3 Compass Ring. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #64 Hỏa Thủy Vị Tế carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 9 · Right Assistant (You Bi) (Lower Cycle Parent (All 3 Yao Opposite · 3rd Gen of Li)), forming temporal Sum-of-Ten with Star Period 1 (9 + 1 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Thân – Canh (236.250°–241.875°) within the Thân / Canh (WSW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (237.188°–238.125°), Yao 4 (239.063°–240.000°), Yao 5 (240.000°–240.938°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 236.250° ±0.45°, 241.875° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): ★ TIMELY PERIOD 9 PARENT DIRECT SPIRIT (Period 9 + Gua Qi 3 Wood). The 64th hexagram keeping cosmic evolution open and inexhaustible! Carries Timely Period 9 Direct Spirit power; sits directly opposite Ji Ji (#63, Gua Qi 7, Period 9) for a 3+7=10 + Double-9 axis! When activating #64 Hỏa Thủy Vị Tế via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

5. Deep-Dive Monograph Pt. II: 4th Generation, 5th Generation, Wandering Soul (Du Hồn) & Returning Soul (Quy Hồn)

Once the 3rd Generation (#64 Hỏa Thủy Vị Tế) completes the transformation of the Lower Trigram, Jing Fang's line progression ascends into the Upper (Outer) Trigram across the 4th Generation (#4 Sơn Thủy Mông), 5th Generation (#59 Phong Thủy Hoán), Wandering Soul (#6 Thiên Thủy Tụng), and Returning Soul (#13 Thiên Hỏa Đồng Nhân). Watch how the Outer Trigram shifts across the palaces while the inner ancestral pulse of the Li Group (Fire ☲ · Ly Cung) drives their destiny:

King Wen #04 · Shān Shuǐ Méng · Jing Fang Step 4

#04. Sơn Thủy Mông — Meng (Youthful Folly / Education) (山水蒙 ䷃) · Gua Qi 6 & Period 8

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Kan ☵. Jing Fang Step 4: 4th Generation (Tứ Thế Quái · 四世卦). In the Jing Fang 8-Palace sequence, the transformation has ascended into the Upper Trigram (shifting the Outer Trigram to Gen ☶), so on the San Yuan Luo Pan its spatial Gua Qi becomes Gua Qi 6 (Yin Water (1-6 Water)) while its ancestral soul remains rooted in the Li Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #4 Sơn Thủy Mông carries Gua Qi 6 (Yin Water (1-6 Water)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 4 (6 + 4 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 1 (|6 − 1| = 5). On the inner Star Period ring, it carries Period 8 · Left Assistant (Zuo Fu) (Lower Cycle Jiangdong Opposite (4th Gen of Li)), forming temporal Sum-of-Ten with Star Period 2 (8 + 2 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Tý – Quý (5.625°–11.250°) within the Tý / Quý (N) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (6.563°–7.500°), Yao 5 (9.375°–10.313°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 5.625° ±0.45°, 11.250° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Lower Cycle Direct Spirit Group (4th Gen of Li · Gua Qi 6 Water · Period 8). Spring water welling at the foot of the mountain. Superb for academies, children's studies, and family mentorship when aligned to Yao 2 or Yao 5. When activating #4 Sơn Thủy Mông via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 6 (Pure One Qi), Gua Qi 4 (Sum of Ten), or Gua Qi 1 (He Tu Same-Element Completion).

King Wen #59 · Fēng Shuǐ Huàn · Jing Fang Step 5

#59. Phong Thủy Hoán — Huan (Dispersion / Dissolving) (風水渙涣) · Gua Qi 2 & Period 4

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Xun ☴ over Lower (Inner) Trigram Kan ☵. Jing Fang Step 5: 5th Generation (Ngũ Thế Quái · 五世卦). In the Jing Fang 8-Palace sequence, the transformation has ascended into the Upper Trigram (shifting the Outer Trigram to Xun ☴), so on the San Yuan Luo Pan its spatial Gua Qi becomes Gua Qi 2 (Yin Fire (2-7 Fire)) while its ancestral soul remains rooted in the Li Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #59 Phong Thủy Hoán carries Gua Qi 2 (Yin Fire (2-7 Fire)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 8 (2 + 8 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 7 (|2 − 7| = 5). On the inner Star Period ring, it carries Period 4 · Literary Arts (Wen Qu) (Upper Cycle North-South (5th Gen of Li)), forming temporal Sum-of-Ten with Star Period 6 (4 + 6 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Ất – Thìn (101.250°–106.875°) within the Ất (ESE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (102.188°–103.125°), Yao 4 (104.063°–105.000°), Yao 5 (105.000°–105.938°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 101.250° ±0.45°, 106.875° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper Cycle Indirect Spirit (5th Gen of Li · Gua Qi 2 Fire · Period 4). Wind blowing over water disperses blockages and stagnation. Ideal for Water Mouth drainage or courtyard circulation when paired with Zhen Gua Qi 8 (2+8=10) and Period 6 (4+6=10). When activating #59 Phong Thủy Hoán via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 2 (Pure One Qi), Gua Qi 8 (Sum of Ten), or Gua Qi 7 (He Tu Same-Element Completion).

King Wen #06 · Tiān Shuǐ Sòng · Jing Fang Step 6

#06. Thiên Thủy Tụng — Song (Conflict / Litigation) (天水訟 ䷅) · Gua Qi 9 & Period 7

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Qian ☰ over Lower (Inner) Trigram Kan ☵. Jing Fang Step 6: Wandering Soul (Du Hồn Quái · 遊魂卦). In the Jing Fang 8-Palace sequence, the transformation has ascended into the Upper Trigram (shifting the Outer Trigram to Qian ☰), so on the San Yuan Luo Pan its spatial Gua Qi becomes Gua Qi 9 (Yang Metal (4-9 Metal)) while its ancestral soul remains rooted in the Li Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #6 Thiên Thủy Tụng carries Gua Qi 9 (Yang Metal (4-9 Metal)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 1 (9 + 1 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 4 (|9 − 4| = 5). On the inner Star Period ring, it carries Period 7 · Broken Army (Po Jun) (Lower Cycle Jiangxi Opposite (Wandering Soul of Li)), forming temporal Sum-of-Ten with Star Period 3 (7 + 3 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Đinh – Mùi (191.250°–196.875°) within the Đinh / Mùi (SSW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 4 (194.063°–195.000°), Yao 5 (195.000°–195.938°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 191.250° ±0.45°, 196.875° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper-Qian Gua Qi 9 Metal · Lower Cycle Period 7 Group (Wandering Soul of Li). Must only be tapped on Yao 4 or Yao 5 (auspicious ruler lines) with harmonious Period 3 / Gua Qi 1 pairing to neutralize legal disputes and convert sharp Metal into judicial authority. When activating #6 Thiên Thủy Tụng via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 9 (Pure One Qi), Gua Qi 1 (Sum of Ten), or Gua Qi 4 (He Tu Same-Element Completion).

King Wen #13 · Tiān Huǒ Tóng Rén · Jing Fang Step 7

#13. Thiên Hỏa Đồng Nhân — Tong Ren (Fellowship) (天火同人 ䷌) · Gua Qi 9 & Period 3

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Qian ☰ over Lower (Inner) Trigram Li ☲. Jing Fang Step 7: Returning Soul (Quy Hồn Quái · 歸魂卦). In the Jing Fang 8-Palace sequence, the transformation has ascended into the Upper Trigram (shifting the Outer Trigram to Qian ☰), so on the San Yuan Luo Pan its spatial Gua Qi becomes Gua Qi 9 (Yang Metal (4-9 Metal)) while its ancestral soul remains rooted in the Li Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #13 Thiên Hỏa Đồng Nhân carries Gua Qi 9 (Yang Metal (4-9 Metal)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 1 (9 + 1 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 4 (|9 − 4| = 5). On the inner Star Period ring, it carries Period 3 · Rank / Lu Cun (Upper Cycle Jiangxi (2nd Yao Change · Returning Soul of Li)), forming temporal Sum-of-Ten with Star Period 7 (3 + 7 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Càn – Hợi (311.250°–316.875°) within the Càn (NW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 1 (311.250°–312.188°), Yao 2 (312.188°–313.125°), Yao 5 (315.000°–315.938°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 311.250° ±0.45°, 316.875° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper-Qian Gua Qi 9 Metal · Period 3 Indirect Spirit (Returning Soul of Li). Bridges the Qian 9 Metal Upper Trigram with the Returning Soul of Li Fire. Exceptional for corporate headquarters doors, alliance-building, and Period 9 facing with 3+7=10. When activating #13 Thiên Hỏa Đồng Nhân via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 9 (Pure One Qi), Gua Qi 1 (Sum of Ten), or Gua Qi 4 (He Tu Same-Element Completion).

6. Upper-Li Compass Ring Equivalents: The 4 Cross-Palace Hexagrams Completing the Gua Qi 3 Family

When you stand at the center of a building holding a San Yuan Xuan Kong Da Gua Luo Pan and look for sectors carrying Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood))—whether to build a Pure One Hexagram (Yi Gua Chun Qing) formation or to lock into Sum-of-Ten with Kan Group ☵ (Gua Qi 7 Fire · 3 + 7 = 10)—you must also command the four hexagrams whose Upper Trigram is Li ☲ even though their Jing Fang root lies in another palace: #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), and #35 Hỏa Địa Tấn (䷢).

King Wen #14 · Huǒ Tiān Dà Yǒu · Upper-Li Compass Ring Member · Jiangxi Hexagram (Rank · Lu Cun) — Only 2nd (middle) Yao differs from Upper Trigram

#14. Hỏa Thiên Đại Hữu — Da You (Great Possession) (火天大有 ䷍) · Gua Qi 3 & Period 3

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Qian ☰. Upper-Li Compass Ring Member · Jiangxi Hexagram (Rank · Lu Cun) — Only 2nd (middle) Yao differs from Upper Trigram. While its Jing Fang ancestral root belongs to another palace's 4th/5th/Soul step, its Outer (Upper) Trigram is Li ☲—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)) and completes the 8-hexagram Upper-Li ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #14 Hỏa Thiên Đại Hữu carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 3 · Rank / Lu Cun (Upper Cycle Jiangxi (Returning Soul of Qian)), forming temporal Sum-of-Ten with Star Period 7 (3 + 7 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Canh – Dậu (264.375°–270.000°) within the Canh / Dậu (W) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (265.313°–266.250°), Yao 3 (266.250°–267.188°), Yao 5 (268.125°–269.063°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 264.375° ±0.45°, 270.000° ±0.75° (Due West Cardinal Void), where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper Cycle Indirect Spirit · Returning Soul Treasure Hexagram (Double-3). Returning Soul of Qian Palace (Fire in the Sky). Supreme for Main Gate, Commercial Facade, or Water Mouth when paired with Kan Gua Qi 7 / Period 7 (3+7=10). When activating #14 Hỏa Thiên Đại Hữu via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

King Wen #38 · Huǒ Zé Kuí · Upper-Li Compass Ring Member · Jiangdong Opposite (Left Assistant · Zuo Fu) — 2nd & 3rd Yao differ from Upper Trigram (1st changed from Period 9)

#38. Hỏa Trạch Khuê — Kui (Opposition / Polarity) (火澤睽 ䷥) · Gua Qi 3 & Period 8

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Dui ☱. Upper-Li Compass Ring Member · Jiangdong Opposite (Left Assistant · Zuo Fu) — 2nd & 3rd Yao differ from Upper Trigram (1st changed from Period 9). While its Jing Fang ancestral root belongs to another palace's 4th/5th/Soul step, its Outer (Upper) Trigram is Li ☲—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)) and completes the 8-hexagram Upper-Li ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #38 Hỏa Trạch Khuê carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 8 · Left Assistant (Zuo Fu) (Lower Cycle Jiangdong Opposite (4th Gen of Gen · Upper-Li Ring)), forming temporal Sum-of-Ten with Star Period 2 (8 + 2 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Canh (258.750°–264.375°) within the Canh (WSW/W) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (259.688°–260.625°), Yao 5 (262.500°–263.438°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 258.750° ±0.45°, 264.375° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper-Li Gua Qi 3 Wood · Lower Cycle Period 8 Direct Spirit Group. Although Fire blazes upward and Lake seeps downward, Yao 5 ('biting through the skin, union brings no error') turns creative tension into Contrarian Innovation when paired with Kan 7 (3+7=10). When activating #38 Hỏa Trạch Khuê via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

King Wen #21 · Huǒ Léi Shì Hé · Upper-Li Compass Ring Member · North-South Eight Spirits (Literary · Wen Qu) — Only 3rd (top) Yao differs from Upper Trigram

#21. Hỏa Lôi Phệ Hạp — Shi He (Biting Through) (火雷噬嗑 ䷔) · Gua Qi 3 & Period 4

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Zhen ☳. Upper-Li Compass Ring Member · North-South Eight Spirits (Literary · Wen Qu) — Only 3rd (top) Yao differs from Upper Trigram. While its Jing Fang ancestral root belongs to another palace's 4th/5th/Soul step, its Outer (Upper) Trigram is Li ☲—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)) and completes the 8-hexagram Upper-Li ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #21 Hỏa Lôi Phệ Hạp carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 4 · Literary Arts (Wen Qu) (Upper Cycle North-South (5th Gen of Xun · Upper-Li Ring)), forming temporal Sum-of-Ten with Star Period 6 (4 + 6 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Thân – Canh (247.500°–253.125°) within the Canh (WSW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 1 (247.500°–248.438°), Yao 4 (250.313°–251.250°), Yao 5 (251.250°–252.188°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 247.500° ±0.75° (Thân–Canh Palace Border), 253.125° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper-Li Gua Qi 3 Wood · Period 4 Indirect Spirit (5th Gen of Xun). Thunder and Lightning unite with decisive legal clarity and market execution. Tapped on Yao 4 ('bites dried gristly meat, receives metal arrows') or Yao 5 ('receives yellow gold'). When activating #21 Hỏa Lôi Phệ Hạp via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

King Wen #35 · Huǒ Dì Jìn · Upper-Li Compass Ring Member · Jiangxi Opposite (Broken Army · Po Jun) — 1st & 3rd Yao differ from Upper Trigram (2nd changed from Period 9)

#35. Hỏa Địa Tấn — Jin (Progress) (火地晉 ䷢) · Gua Qi 3 & Period 7

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Li ☲ over Lower (Inner) Trigram Kun ☷. Upper-Li Compass Ring Member · Jiangxi Opposite (Broken Army · Po Jun) — 1st & 3rd Yao differ from Upper Trigram (2nd changed from Period 9). While its Jing Fang ancestral root belongs to another palace's 4th/5th/Soul step, its Outer (Upper) Trigram is Li ☲—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood)) and completes the 8-hexagram Upper-Li ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #35 Hỏa Địa Tấn carries Gua Qi 3 (Yang Wood (3-8 Wood)), which achieves Sum-of-Ten (He Shi 合十) resonance with Gua Qi 7 (3 + 7 = 10) and He Tu Generative Difference-of-Five (He Sheng Cheng 合生成) with Gua Qi 8 (|3 − 8| = 5). On the inner Star Period ring, it carries Period 7 · Broken Army (Po Jun) (Lower Cycle Jiangxi Opposite (Wandering Soul of Qian)), forming temporal Sum-of-Ten with Star Period 3 (7 + 3 = 10).

3. 360° Fu Xi Compass Arc & 384-Yao Line Division: Occupies the 5.625° horizon sector at Canh (241.875°–247.500°) within the Canh (WSW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (242.813°–243.750°), Yao 5 (245.625°–246.563°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 241.875° ±0.45°, 247.500° ±0.75° (Thân–Canh Border), where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Lower Cycle Direct Spirit Group (Gua Qi 3 + Period 7 = Internal Sum of Ten 3+7=10). Wandering Soul of Qian Palace with built-in Sum-of-Ten (Gua Qi 3 Wood + Period 7 = 10). Excellent for executive promotion, public visibility, and Stove facing. When activating #35 Hỏa Địa Tấn via Xuan Kong Da Gua Date Selection, select Year, Month, Day, and Hour pillars carrying Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Same-Element Completion).

7. 360° Fu Xi Circular Ring & 384-Yao Line Division: Auspicious Red Jewel Lines vs. Void Taboos (Không Vong)

Precision is the lifeblood of The Compass in Practice. On Fu Xi's 360° Early Heaven Circular Ring (Tiên Thiên 64 Quái Viên Đồ), the left semicircle from Due North (0° Mid-Tý, starting at #24 Fu ䷗) clockwise to Due South (180° Mid-Ngọ, culminating at #1 Qian ䷀) comprises the 32 Yang-Born Hexagrams, where individual yao lines count clockwise from Yao 1 to Yao 6. Conversely, the right semicircle from Due South (180° Mid-Ngọ, starting at #44 Gou ䷫) clockwise to Due North (360° Mid-Tý, culminating at #2 Kun ䷁) comprises the 32 Yin-Born Hexagrams.

Every hexagram occupies exactly 360° ÷ 64 = 5.625°. Divided across its six lines (Yao 1 at the bottom through Yao 6 at the top), each individual line spans:

1 Hexagram Arc = 5.625° | 1 Individual Yao Arc = 5.625° ÷ 6 = 0.9375° (56 minutes 15 seconds of arc)

Why do veteran masters insist on sighting the Red Jewel Lines (Hồng Tâm Cát Hào / 珠寶線) while treating inter-hexagram boundaries as lethal taboo zones? Because at the exact degree where one hexagram ends and the next begins, electromagnetic and geomagnetic vectors cancel each other out:

1. Eight-Trigram Palace Boundary Great Void (Đại Không Vong Tuyến 大空亡): Occurs at the 8 cardinal and intercardinal boundaries separating the 8 Trigram Palaces (0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°) and the 24-Mountain seams within±0.75°. Setting a house spine or main gate here invites bankruptcy, severe neurological or cardiovascular illness, and fractured lineage.
2. Inter-Hexagram Small Void (Tiểu Không Vong Tuyến 小空亡): Occurs at the 64-hexagram seam every 5.625° (within ±0.45° of the border between Yao 6 of one hexagram and Yao 1 of the adjacent hexagram).
3. Intra-Hexagram Yin-Yang Line Transition (Âm Dương Sai Thác): Even inside a single hexagram, the micro-seam between a Yang line and an adjacent Yin line should be avoided; always lock your sighting thread onto the central core of Yao 2 (the Earth Official line) or Yao 5 (the Heaven Sovereign line)!

Figure 3: High-precision 384-Yao angular breakdown (`0.9375°` per line) of the Period-9 Crown Hexagram #64 Hỏa Thủy Vị Tế (火水未濟 ䷿), highlighting Red Jewel Lines versus Void Taboo boundaries.

Table 3: Complete 384-Yao Compass Degree Breakdown, Red Jewel Lines & Void Taboos for All 12 Hexagrams Associated with the Li Group (Fire ☲ · Ly Cung)
Hexagram	5.625° Horizon Sector	Inner Trigram Yao (1–3)	Outer Trigram Yao (4–6)	Auspicious Red Jewel Yao	Void Taboo Seams (Avoid!)
#30 Ly Vi Hỏa ䷝ Gua Qi 3 · Period 1	Dậu (270.000°–275.625°) 24-Mtn: Dậu (Due W)	Y1: 270.00°–270.94° Y2: 270.94°–271.88° Y3: 271.88°–272.81°	Y4: 272.81°–273.75° Y5: 273.75°–274.69° Y6: 274.69°–275.62°	Yao 2 (270.938°–271.875°), Yao 5 (273.750°–274.688°)	270.000° ±0.75° (Due West Cardinal Void), 275.625° ±0.45°
#56 Hỏa Sơn Lữ ䷷ Gua Qi 3 · Period 2	Thân (230.625°–236.250°) 24-Mtn: Thân (SW/WSW)	Y1: 230.62°–231.56° Y2: 231.56°–232.50° Y3: 232.50°–233.44°	Y4: 233.44°–234.38° Y5: 234.38°–235.31° Y6: 235.31°–236.25°	Yao 2 (231.563°–232.500°), Yao 5 (234.375°–235.313°)	230.625° ±0.45°, 236.250° ±0.45°
#50 Hỏa Phong Đỉnh ䷱ Gua Qi 3 · Period 6	Thân (225.000°–230.625°) 24-Mtn: Thân (SW)	Y1: 225.00°–225.94° Y2: 225.94°–226.88° Y3: 226.88°–227.81°	Y4: 227.81°–228.75° Y5: 228.75°–229.69° Y6: 229.69°–230.62°	Yao 2 (225.938°–226.875°), Yao 5 (228.750°–229.688°), Yao 6 (229.688°–230.625°)	225.000° ±0.75° (Khôn–Thân 45° Corner Void), 230.625° ±0.45°
#64 Hỏa Thủy Vị Tế ䷿ Gua Qi 3 · Period 9	Thân – Canh (236.250°–241.875°) 24-Mtn: Thân / Canh (WSW)	Y1: 236.25°–237.19° Y2: 237.19°–238.12° Y3: 238.12°–239.06°	Y4: 239.06°–240.00° Y5: 240.00°–240.94° Y6: 240.94°–241.88°	Yao 2 (237.188°–238.125°), Yao 4 (239.063°–240.000°), Yao 5 (240.000°–240.938°)	236.250° ±0.45°, 241.875° ±0.45°
#04 Sơn Thủy Mông ䷃ Gua Qi 6 · Period 8	Tý – Quý (5.625°–11.250°) 24-Mtn: Tý / Quý (N)	Y1: 5.62°–6.56° Y2: 6.56°–7.50° Y3: 7.50°–8.44°	Y4: 8.44°–9.38° Y5: 9.38°–10.31° Y6: 10.31°–11.25°	Yao 2 (6.563°–7.500°), Yao 5 (9.375°–10.313°)	5.625° ±0.45°, 11.250° ±0.45°
#59 Phong Thủy Hoán 涣 Gua Qi 2 · Period 4	Ất – Thìn (101.250°–106.875°) 24-Mtn: Ất (ESE)	Y1: 101.25°–102.19° Y2: 102.19°–103.12° Y3: 103.12°–104.06°	Y4: 104.06°–105.00° Y5: 105.00°–105.94° Y6: 105.94°–106.88°	Yao 2 (102.188°–103.125°), Yao 4 (104.063°–105.000°), Yao 5 (105.000°–105.938°)	101.250° ±0.45°, 106.875° ±0.45°
#06 Thiên Thủy Tụng ䷅ Gua Qi 9 · Period 7	Đinh – Mùi (191.250°–196.875°) 24-Mtn: Đinh / Mùi (SSW)	Y1: 191.25°–192.19° Y2: 192.19°–193.12° Y3: 193.12°–194.06°	Y4: 194.06°–195.00° Y5: 195.00°–195.94° Y6: 195.94°–196.88°	Yao 4 (194.063°–195.000°), Yao 5 (195.000°–195.938°)	191.250° ±0.45°, 196.875° ±0.45°
#13 Thiên Hỏa Đồng Nhân ䷌ Gua Qi 9 · Period 3	Càn – Hợi (311.250°–316.875°) 24-Mtn: Càn (NW)	Y1: 311.25°–312.19° Y2: 312.19°–313.12° Y3: 313.12°–314.06°	Y4: 314.06°–315.00° Y5: 315.00°–315.94° Y6: 315.94°–316.88°	Yao 1 (311.250°–312.188°), Yao 2 (312.188°–313.125°), Yao 5 (315.000°–315.938°)	311.250° ±0.45°, 316.875° ±0.45°
#14 Hỏa Thiên Đại Hữu ䷍ Gua Qi 3 · Period 3	Canh – Dậu (264.375°–270.000°) 24-Mtn: Canh / Dậu (W)	Y1: 264.38°–265.31° Y2: 265.31°–266.25° Y3: 266.25°–267.19°	Y4: 267.19°–268.12° Y5: 268.12°–269.06° Y6: 269.06°–270.00°	Yao 2 (265.313°–266.250°), Yao 3 (266.250°–267.188°), Yao 5 (268.125°–269.063°)	264.375° ±0.45°, 270.000° ±0.75° (Due West Cardinal Void)
#38 Hỏa Trạch Khuê ䷥ Gua Qi 3 · Period 8	Canh (258.750°–264.375°) 24-Mtn: Canh (WSW/W)	Y1: 258.75°–259.69° Y2: 259.69°–260.62° Y3: 260.62°–261.56°	Y4: 261.56°–262.50° Y5: 262.50°–263.44° Y6: 263.44°–264.38°	Yao 2 (259.688°–260.625°), Yao 5 (262.500°–263.438°)	258.750° ±0.45°, 264.375° ±0.45°
#21 Hỏa Lôi Phệ Hạp ䷔ Gua Qi 3 · Period 4	Thân – Canh (247.500°–253.125°) 24-Mtn: Canh (WSW)	Y1: 247.50°–248.44° Y2: 248.44°–249.38° Y3: 249.38°–250.31°	Y4: 250.31°–251.25° Y5: 251.25°–252.19° Y6: 252.19°–253.12°	Yao 1 (247.500°–248.438°), Yao 4 (250.313°–251.250°), Yao 5 (251.250°–252.188°)	247.500° ±0.75° (Thân–Canh Palace Border), 253.125° ±0.45°
#35 Hỏa Địa Tấn ䷢ Gua Qi 3 · Period 7	Canh (241.875°–247.500°) 24-Mtn: Canh (WSW)	Y1: 241.88°–242.81° Y2: 242.81°–243.75° Y3: 243.75°–244.69°	Y4: 244.69°–245.62° Y5: 245.62°–246.56° Y6: 246.56°–247.50°	Yao 2 (242.813°–243.750°), Yao 5 (245.625°–246.563°)	241.875° ±0.45°, 247.500° ±0.75° (Thân–Canh Border)

8. Supreme Hexagram Pairing Laws: Pure One Hexagram, Sum of Ten & Generative Difference of Five

Selecting a single auspicious hexagram for the Sitting Mountain is only 25% of a Xuan Kong Da Gua audit. In Principles of Trigram Pairing, the four spatial pillars of a building—Incoming Dragon (Lai Long 來龍), Sitting Mountain (Tọa Sơn 坐山), Facing Direction (Hướng Thủ 向首), and Water Mouth / Main Gate (Thủy Khẩu / Đại Môn 水口大門)—must lock into mathematical resonance through four classical formulas:

LAW 1 · YI GUA CHUN QING

Pure One Hexagram (Nhất Quái Thuần Thanh 一卦純清)

All four positions share Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood))—selecting exclusively from the 8 Upper-Li hexagrams (#30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), #35 Hỏa Địa Tấn (䷢))—or all four positions share Star Period 9 (such as pairing #64 Hỏa Thủy Vị Tế with another Period-9 Parent Hexagram). Zero five-phase friction; pure imperial authority.

LAW 2 · HE SHI (SUM = 10)

Husband-Wife Sum of Ten (Tiên Hậu Thiên Hợp Thập 合十)

Pairs any Upper-Li hexagram carrying Gua Qi 3 with any hexagram from the Kan Group ☵ (Gua Qi 7 Fire · 3 + 7 = 10) (3 + 7 = 10), OR pairs #64 Hỏa Thủy Vị Tế (Period 9) with #30 Ly Vi Hỏa (Period 1) so their Star Periods sum to 9 + 1 = 10! Unlocks complete Yin-Yang communication across the floor plan.

LAW 3 · HE SHENG CHENG (DIFF = 5)

He Tu Generative Difference of Five (Hợp Sinh Thành 合生成)

Pairs any Upper-Li hexagram carrying Gua Qi 3 with any hexagram from the Zhen Group ☳ (Gua Qi 8 Wood · 3 – 8 = 5) (|3 − 8| = 5). Because both groups belong to the exact same He Tu Five Phase (Yang Wood (He Tu 3–8 Companion Wood)), Yang creation and Yin completion merge into one family.

LAW 4 · SAN BAN GUA

Three-Group Parent String (Tam Ban Phụ Mẫu 1-4-7 · 2-5-8 · 3-6-9)

Connects hexagrams along the Jiangdong (1–4–7), Jiangxi (2–5–8), or North-South (3–6–9) strings to circulate Qi across complex multi-wing estates where 180° opposition is blocked by urban topography.

Test your layout against these four laws. Whenever Sitting and Facing share a 180° axis on the Fu Xi Circular Ring, their hexagrams are exact 6-line Yin-Yang inversions of each other—meaning their Upper Trigrams are Early Heaven opposites whose Gua Qi numbers always add up to 10, while their relative line differences remain identical so their Star Period numbers are 100% identical (Pure One Period Qi)! The real art lies in positioning the Main Gate (Đại Môn) and Water Mouth (Thủy Khẩu) so that all four vectors belong to at most two resonant numbers.

9. Period 9 (2024–2043) Field Operations: Direct Spirit (Chính Thần) Mountain & Indirect Spirit (Linh Thần) Water

On February 4, 2024 (Li Chun of the Jia Chen year), the planet crossed the threshold into Lower Cycle Period 9 (2024–2043), governed by Later Heaven Nine Purple Li Fire (九紫離火). In Chính Thần and Linh Thần, the law of Mountain and Water placement in Xuan Kong Da Gua is absolute: “Put Direct Spirit on the Mountain; put Indirect Spirit in the Water” (Chính Thần thượng sơn, Linh Thần hạ thủy 正神上山，零神下水).

How does this law apply specifically to the Li Group (Fire ☲ · Ly Cung) between 2024 and 2043?

1. The Lower-Cycle Direct Spirit Group (Chính Thần Đương Vận — Star Periods 6, 7, 8, and above all Period 9): Within the Li Group (Fire ☲ · Ly Cung), the supreme Timely Direct Spirit is the 3rd-Generation Parent Hexagram #64 Hỏa Thủy Vị Tế (火水未濟 ䷿) at Thân – Canh (236.250°–241.875°) (carrying Star Period 9 and Gua Qi 3), supported by the Lower-Cycle cohorts #50 Hỏa Phong Đỉnh (Period 6), #6 Thiên Thủy Tụng (Period 7), and #4 Sơn Thủy Mông (Period 8). Place high terrain, solid structural backing, the Sitting spine of the building, the CEO throne, and the Master Bed here. Never excavate a deep pool or open a wide low-lying drainage gate on #64 Hỏa Thủy Vị Tế without a secondary water lock, lest you commit “Direct Spirit Falling into Water” (Chính Thần hạ thủy).
2. The Upper-Cycle Indirect Spirit Group (Linh Thần Hợp Thập — Star Periods 1, 2, 3, 4): Because Period 1 + Period 9 = 10, the Pure Root Hexagram #30 Ly Vi Hỏa (離為火 ䷝) at Dậu (270.000°–275.625°) (carrying Star Period 1 and Gua Qi 3) acts as the Supreme Sum-of-Ten Indirect Spirit! Supported by #56 Hỏa Sơn Lữ (Period 2), #13 Thiên Hỏa Đồng Nhân (Period 3), and #59 Phong Thủy Hoán (Period 4), these sectors thrive when activated by open Bright Hall (Minh Đường) plazas, road junctions, main entrance gates, swimming pools, and water mouths.

Figure 4: Period 9 (2024–2043) Mountain and Water operational diagram for the Li Group (Fire ☲ · Ly Cung), pairing Direct Spirit #64 Hỏa Thủy Vị Tế with Sum-of-Ten Indirect Spirit #30 Ly Vi Hỏa.

10. Architectural Layout & Three Essentials (Sitting, Facing, Main Gate, Stove, Bed & Water Mouth) + 2026–2027 Audit

How do we translate these compass degrees into concrete architectural drawings for a villa, corporate office, or urban apartment? In Practical Application, we stand at the geometric heart of the floor plan (the Taiji Center—or the center of the main living room/office suite for irregular layouts) and project rays to the five key functional hubs:

Sitting Mountain & Building Spine (Tọa Sơn): Lock the sitting degree onto Yao 2 or Yao 5 of #64 Hỏa Thủy Vị Tế (䷿) (Star Period 9 Direct Spirit) or #50 Hỏa Phong Đỉnh (䷱) (Star Period 6).
Main Entrance Gate & Reception Door (Đại Môn / Nạp Khí Khẩu): Position or angle the main door leaf onto an auspicious Red Yao of #30 Ly Vi Hỏa (䷝) (Star Period 1 → 1 + 9 = 10 Indirect Spirit) or #13 Thiên Hỏa Đồng Nhân (䷌) (Returning Soul wealth retention).
Kitchen Stove & Wealth Alchemy (Táo Vị): Set the stove in a clean sector where its Gua Qi Five Phase either produces or matches the Sitting Mountain's Gua Qi (for Li Group (Fire ☲ · Ly Cung) Gua Qi 3 Yang Wood (He Tu 3–8 Companion Wood), pair with Kan Group ☵ (Gua Qi 7 Fire · 3 + 7 = 10) or Zhen Group ☳ (Gua Qi 8 Wood · 3 – 8 = 5)), while aligning the stove switch/mouth toward a Red Jewel Yao. Strictly avoid placing a fiery stove on Northwest Càn degrees where Fire attacks Heaven's Gate.
Master Bed & Executive Command Desk (Chủ Sàng & Bàn Tổng Giám Đốc): Anchor the bedhead or executive chair in the Micro-Taiji sector of #64 Hỏa Thủy Vị Tế or #4 Sơn Thủy Mông so the occupant absorbs Timely Lower-Cycle Direct Spirit support.
Water Mouth, Swimming Pool & Drainage Weir (Thủy Khẩu): Ensure incoming water or courtyard fountains sit on #30 Ly Vi Hỏa or #56 Hỏa Sơn Lữ, and never allow outgoing drainage to cross a Void Seam.

Figure 5: Practical architectural alignment blueprint from the property's Taiji Center, linking #64 Hỏa Thủy Vị Tế (Sitting), #30 Ly Vi Hỏa (Main Gate), #50 Hỏa Phong Đỉnh (Stove/Vault), and #13 Thiên Hỏa Đồng Nhân (Water Mouth).

Table 4: Architectural Three-Essentials Rating Matrix for the Li Group (Fire ☲ · Ly Cung) in Period 9 (2024–2043)
Hexagram	Sitting Spine / Master Bed	Main Gate / Water Mouth	Gua Qi Pairing Formula	Kitchen Stove & Vault Protocol
#30 Ly Vi Hỏa (䷝) Qi 3 · Yun 1	★★☆☆☆ Better for Water/Gate	★★★★★ Supreme 1+9=10 Indirect Spirit	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#56 Hỏa Sơn Lữ (䷷) Qi 3 · Yun 2	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#50 Hỏa Phong Đỉnh (䷱) Qi 3 · Yun 6	★★★★☆ Strong Lower-Cycle Sitting	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#64 Hỏa Thủy Vị Tế (䷿) Qi 3 · Yun 9	★★★★★ Supreme Direct Spirit	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#04 Sơn Thủy Mông (䷃) Qi 6 · Yun 8	★★★★☆ Strong Lower-Cycle Sitting	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 4 (Sum of 10) or Gua Qi 6 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#59 Phong Thủy Hoán (涣) Qi 2 · Yun 4	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 8 (Sum of 10) or Gua Qi 2 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#06 Thiên Thủy Tụng (䷅) Qi 9 · Yun 7	★★★★☆ Strong Lower-Cycle Sitting	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 1 (Sum of 10) or Gua Qi 9 (Pure One)	Align stove knob to Red Yao; avoid NW Càn Fire Burning Heaven's Gate
#13 Thiên Hỏa Đồng Nhân (䷌) Qi 9 · Yun 3	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 1 (Sum of 10) or Gua Qi 9 (Pure One)	Align stove knob to Red Yao; avoid NW Càn Fire Burning Heaven's Gate
#14 Hỏa Thiên Đại Hữu (䷍) Qi 3 · Yun 3	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#38 Hỏa Trạch Khuê (䷥) Qi 3 · Yun 8	★★★★☆ Strong Lower-Cycle Sitting	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#21 Hỏa Lôi Phệ Hạp (䷔) Qi 3 · Yun 4	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#35 Hỏa Địa Tấn (䷢) Qi 3 · Yun 7	★★★★☆ Strong Lower-Cycle Sitting	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 7 (Sum of 10) or Gua Qi 3 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao

🔥 Urgent Annual Timing Advisory: 2026 (Bing Wu) & 2027 (Ding Wei) Fire Peak

2026 (Bính Ngọ — Heavenly River Water / Double Yang Fire Horse) and 2027 (Đinh Mùi — Heavenly River Water / Yin Fire Goat) represent the blazing solar zenith of early Period 9! During 2026, the Grand Duke (Thái Tuế) sits in Due South Ngọ (172.5°–187.5°, overlapping #40 Jie ䷧ and #44 Gou ䷫) while the Three Killings (Tam Sát)and歲破 Year Breaker occupy Due North Tý (352.5°–7.5°, overlapping #24 Fu ䷗, #2 Kun ䷁, and #23 Bo ䷖). In 2027, Thái Tuế shifts to Mùi (195°–210°, overlapping #12 Pi ䷋ and #28 Da Guo ䷛) while Year Breaker strikes Sửu (15°–30°, overlapping #27 Yi ䷚, #22 Bi ䷕, and #41 Sun ䷨). When groundbreaking or renovating any sector of the Li Group (Fire ☲ · Ly Cung) in 2026–2027, never excavate first in the Thái Tuế or Tam Sát mountain; instead, initiate construction in a Sum-of-Ten auspicious sector using a Three-Cycle Xuan Kong Da Gua Date Chart to harmonize the annual spirit.

11. Three-Cycle Xuan Kong Da Gua Date Selection (Ze Ri) & Real-World Field Case Studies

Spatial alignment is the hardware; time is the high-voltage current that brings the circuit to life. In classical San Yuan Xuan Kong Da Gua Date Selection (Huyền Không Đại Quái Trạch Nhật), each of the 60 Jiazi (Lục Thập Hoa Giáp) pillars of Year, Month, Day, and Hour maps to a specific hexagram carrying its own Gua Qi (1–9) and Star Period (1–9). When selecting a date to break ground, install a main gate, set a stove, or move into a property governed by the Li Group (Fire ☲ · Ly Cung) (Gua Qi 3 — Yang Wood (He Tu 3–8 Companion Wood)), apply three golden rules:

Rule 1 — Pure One Qi Date Chart (Nhất Quái Thuần Thanh Khóa): All four pillars (Year, Month, Day, Hour) carry Gua Qi 3, matching the Sitting Mountain's Gua Qi 3 so that 5 pillars (4 time pillars + 1 space pillar) vibrate on a single frequency.
Rule 2 — Sum-of-Ten Husband-Wife Date Chart (Tiên Hậu Thiên Hợp Thập Khóa): The four time pillars combine Gua Qi 3 and Gua Qi 7 (3 + 7 = 10), or combine Star Period 9 and Star Period 1 (9 + 1 = 10).
Rule 3 — He Tu Generative Date Chart (Hợp Sinh Thành Khóa): The four time pillars combine Gua Qi 3 and Gua Qi 8 (difference of 5, uniting Yang creation and Yin completion of Yang Wood (He Tu 3–8 Companion Wood)) while ensuring the Day and Hour Gua Qi produce Inward (Sinh Nhập) or assist (Tỷ Hòa) the Sitting Mountain and Householder's Natal Pillar.

FIELD AUDIT #1 · MASTER UNG KHIEM ARCHIVE

Case Study 1: AI & Semiconductor R&D Campus in Da Nang — Sitting Wei Ji #64 (240.3° Yao 5) Facing Ji Ji #63 (60.3° / 71.5° Axis)

Period 9 belongs to silicon, photonics, and artificial intelligence—the exact domain of Li Fire ☲. In early 2025, I designed the master orientation for an AI & semiconductor design center in Da Nang. We anchored the main R&D tower sitting at 240.3° (Yao 5 of #64 Fire Water Wei Ji ䷿: Gua Qi 3 Wood, Star Period 9 Direct Spirit) and oriented the primary plaza gate and reflection basin toward the Northeast Giáp sector at 71.6° (Yao 5 of #63 Water Fire Ji Ji ䷾: Gua Qi 7 Fire, Star Period 9) alongside a secondary water mouth at 54.8° (Yao 5 of #29 Kan Wei Shui ䷜: Gua Qi 7, Star Period 1). Look at the triple resonance: Gua Qi 3 + 7 = 10 (Sum of Ten), He Tu 3 Wood feeds 7 Fire, and Period 9 Direct Spirit mates with Period 1 Indirect Spirit (9+1=10)! Within 14 months, the lab secured two international chip patents and Series B sovereign backing.

FIELD AUDIT #2 · MASTER UNG KHIEM ARCHIVE

Case Study 2: Fine-Dining Culinary Villa in District 3, HCMC — Igniting the Sacred Cauldron #50 Ding (229.1° Yao 5)

Every great kitchen or wealth-refining enterprise needs the Sacred Bronze Cauldron. A hospitality group in District 3 struggled with high chef turnover and erratic cash flow because their central kitchen hearth was angled at 225.2°—right inside the Southwest 45° Eight-Trigram Corner Void (Đại Không Vong). We repositioned the commercial range and executive office axis by 3.9° to lock onto 229.1° (Yao 5 of #50 Fire Wind Ding 火風鼎 ䷱: 'The Cauldron has golden ears and metal carrying rings,有利貞 auspicious'). Because Ding (#50) carries Gua Qi 3 Wood (feeding Stove Fire) and Lower-Cycle Star Period 6, paired with a front gate on #14 Da You (Gua Qi 3 Pure One Wood Qi), monthly revenue climbed 64% within two quarters.

Measure Your Exact Li Group ☲ Fire Hexagram & 384-Yao Line on Your Floor Plan

Want to verify which of the 64 Early Heaven Hexagrams and 384 individual lines your home, villa, or corporate headquarters sits on—and whether it locks into Period 9 Direct and Indirect Spirit resonance? Launch Master Ung Khiem's interactive tools now:

☯️ Xuan Kong Da Gua Hub 🧭 Launch Luo Pan Pro (64 Hexagrams & 384 Yao) 🏠 3D Home Feng Shui Simulator

12. Frequently Asked Questions (FAQ) & Classical Bibliography on the Li Group (Fire ☲ · Ly Cung)

1. Which 8 hexagrams belong to the Li Group (Fire ☲ · Ly Cung) in Xuan Kong Da Gua?

Two complementary sets define this palace. In the Jing Fang 8-Palace transformation lineage (Bát Cung Kinh Phòng), the 8 hexagrams of the Li Group (Fire ☲ · Ly Cung) are #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #4 Sơn Thủy Mông (䷃), #59 Phong Thủy Hoán (涣), #6 Thiên Thủy Tụng (䷅), #13 Thiên Hỏa Đồng Nhân (䷌). On the San Yuan 360° Upper-Trigram Compass Ring, the 8 hexagrams sharing Li ☲ as their Upper (Outer) Trigram—all carrying Gua Qi 3 (Yang Wood (He Tu 3–8 Companion Wood))—are #30 Ly Vi Hỏa (䷝), #56 Hỏa Sơn Lữ (䷷), #50 Hỏa Phong Đỉnh (䷱), #64 Hỏa Thủy Vị Tế (䷿), #14 Hỏa Thiên Đại Hữu (䷍), #38 Hỏa Trạch Khuê (䷥), #21 Hỏa Lôi Phệ Hạp (䷔), #35 Hỏa Địa Tấn (䷢). Notice that the first four hexagrams (Steps 0, 1, 2, and 3) belong to both sets simultaneously!

2. Why do the first 4 hexagrams of the Li Palace carry Gua Qi 3, while the last 4 change their Gua Qi?

Look at the Outer Trigram. In San Yuan Xuan Kong Da Gua, a hexagram's spatial Gua Qi (1–9) is governed 100% by its Upper (Outer) Trigram. During Jing Fang's first three line transformations (Pure Root #30, 1st Gen #56, 2nd Gen #50, and 3rd Gen #64), only the bottom three lines (Lower Trigram) change, leaving Li ☲ unchanged on top with Gua Qi 3. Once the transformation climbs into the 4th and 5th lines (4th Gen #4, 5th Gen #59, Wandering Soul #6, and Returning Soul #13), the Upper Trigram changes, shifting their compass Gua Qi while preserving their Li Palace ancestral soul.

3. Which hexagram in the Li Group (Fire ☲ · Ly Cung) is the strongest Sitting Mountain in Period 9 (2024–2043)?

One hexagram stands supreme. The 3rd-Generation Lower-Cycle Parent Hexagram #64 Hỏa Thủy Vị Tế (火水未濟 ䷿) at Thân – Canh (236.250°–241.875°) carries Star Period 9 (Right Assistant / You Bi) and Gua Qi 3. Because its Upper and Lower Trigrams are in total 3-line Yin-Yang opposition, it acts as the reigning Period 9 Direct Spirit (Chính Thần)—ideal for the Sitting Mountain spine, high terrain backing, executive suite, and Master Bed.

4. Which hexagram in the Li Group (Fire ☲ · Ly Cung) is best for the Main Gate or Water Mouth in Period 9?

Tap the Pure Root! The doubled hexagram #30 Ly Vi Hỏa (離為火 ䷝) at Dậu (270.000°–275.625°) carries Star Period 1 (Greedy Wolf / Tan Lang) and Gua Qi 3. In Period 9, Star Period 1 forms Sum of Ten (1 + 9 = 10) with the ruling period, making #30 Ly Vi Hỏa the crown Indirect Spirit (Linh Thần) for main gates, water mouths, pools, and road junctions.

5. How do I pair the Li Group (Fire ☲ · Ly Cung) using Sum of Ten (He Shi) and Difference of Five (He Sheng Cheng)?

Two mathematical locks govern pairing. For Sum of Ten (He Shi 合十), pair any Upper-Li hexagram (Gua Qi 3) with any hexagram from the Kan Group ☵ (Gua Qi 7 Fire · 3 + 7 = 10) so their Gua Qi numbers add up to 10. For He Tu Generative Difference of Five (He Sheng Cheng 合生成), pair Gua Qi 3 with the Zhen Group ☳ (Gua Qi 8 Wood · 3 – 8 = 5) so their Gua Qi numbers differ by 5 and unite within Yang Wood (He Tu 3–8 Companion Wood).

6. How do I avoid Void Lines (Không Vong) when aligning a building to the Li Group (Fire ☲ · Ly Cung)?

Never set a centerline on a seam. Each hexagram spans 5.625° and each individual yao line spans 0.9375°. Keep your structural sitting-facing thread at least ±0.75° away from 24-Mountain and 8-Palace borders (Great Void / Đại Không Vong) and at least ±0.45° away from the 5.625° inter-hexagram borders (Small Void / Tiểu Không Vong), aiming squarely for the middle of Yao 2 or Yao 5.

7. Can I apply the Li Group (Fire ☲ · Ly Cung) in an apartment where I cannot change the building's exterior orientation?

Yes—through Micro-Taiji angular distribution. Stand at the center of your apartment or main living room with a San Yuan Luo Pan and locate where #64 Hỏa Thủy Vị Tế, #30 Ly Vi Hỏa, and #50 Hỏa Phong Đỉnh fall. Place your bedhead, executive desk, induction stove, and indoor water feature onto those exact 0.9375° Red Jewel Lines, then switch the formation on using a resonant Da Gua Date Selection chart.

8. How do I select an auspicious Xuan Kong Da Gua date for a Li Group (Fire ☲ · Ly Cung) property?

Match the Four Pillars of time to the Sitting Mountain's Gua Qi. Convert the Year, Month, Day, and Hour stems and branches into their 64-hexagram Da Gua equivalents, and choose a chart whose four pillars carry Gua Qi 3 (Pure One Qi), Gua Qi 7 (Sum of Ten), or Gua Qi 8 (He Tu Difference of Five), while avoiding annual Thái Tuế and Tam Sát clashes on the Sitting degree.

Classical Sources & Academic References

Grandmaster Yang Yun Song (楊筠松, Tang Dynasty), Qing Nang Ao Yu (青囊奧語 · Green Satchel Mystery Words) & Tian Yu Jing (天玉經 · Heavenly Jade Classic).
Grandmaster Jiang Da Hong (蔣大鴻, Ming–Qing Dynasty), Di Li Bian Zheng (地理辨正 · Rectifying the Canon of Earth Principles).
Jing Fang (京房, Western Han Dynasty), Jing Shi Yi Zhuan (京氏易傳 · Commentary on the Eight-Palace I Ching Transformations).
Shao Yong (邵雍, Northern Song Dynasty), Huangji Jingshi Shu (皇極經世書 · Supreme Principles Governing the World — Fu Xi 64-Hexagram Square & Circular Diagrams).
Anonymous (Ming–Qing San Yuan Transmission), Yu Han Tong Mi (玉函通秘 · Jade Casket Mystery of Xuan Kong Da Gua).
Zeng Zi Nan (曾子南), San Yuan Xuan Kong Da Gua Di Li Jiao Cai (三元玄空大卦地理教材 · Three-Cycle Xuan Kong Da Gua Geomancy Compendium).
Imperially Commissioned Qianlong Compendium (1741), Xie Ji Bian Fang Shu (協紀辨方書 · Treatise on Harmonizing Times and Distinguishing Directions).