Why do the first 4 hexagrams of the Gen Palace share Gua Qi 6, 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 Gen ☶ on top (Gua Qi 6). 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 Gen Palace ancestral soul.

Which hexagrams in the Gen Group (Mountain ☶ · Cấn Cung) are strongest for Period 9 (2024–2043)?

For Sitting Mountain, high terrain, and executive backing (Direct Spirit / Chinh Than), the crown jewel is #41 Sơn Trạch Tổn (山澤損 ䷨), the 3rd-Generation Parent Hexagram carrying Star Period 9 at Sửu (28.125°–33.750°). For Main Gate, Water Mouth, and driveway intake (Indirect Spirit / Linh Than), the prime choice is #52 Cấn Vi Sơn (艮為山 ䷳), the Pure Root Hexagram carrying Star Period 1 (forming 1+9=10 Sum-of-Ten with Period 9) at Quý (11.250°–16.875°).

How do Sum of Ten (He Shi) and Difference of Five (He Sheng Cheng) work for the Gen Group (Mountain ☶ · Cấn Cung)?

All 8 Upper-Gen compass hexagrams carry Gua Qi 6. They achieve Husband-Wife Sum-of-Ten (He Shi) when paired with Dui Group ☱ (Gua Qi 4 Metal · 6 + 4 = 10), and achieve He Tu Generative Difference-of-Five (He Sheng Cheng) when paired with Kun Group ☷ (Gua Qi 1 Water · 6 – 1 = 5).

☶ XUAN KONG DA GUA · 8 TRIGRAM PALACES Gua Qi 6 · Yin Water (He Tu 1–6 Co-Ancestor Water) • Early Heaven 7 / Later Heaven 8

Gen Group (Mountain ☶ · Cấn Cung) in Xuan Kong Da Gua (艮宮八卦): 8 Palace Hexagrams, 384-Yao Degrees & Period 9 Mastery

Q: Which 8 hexagrams belong to the Gen Group (Mountain ☶ · Cấn Cung) in Xuan Kong Da Gua?

In the Jing Fang 8-Palace lineage, the Gen Group (Mountain ☶ · Cấn Cung) comprises #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #38 Hỏa Trạch Khuê (䷥), #10 Thiên Trạch Lý (䷉), #61 Phong Trạch Trung Phu (䷼), #53 Phong 山漸 (䷴). On the San Yuan 360-degree Upper-Trigram Gua Qi compass ring, the 8 hexagrams sharing Upper Trigram Gen ☶ (all carrying Gua Qi 6 — Yin Water (He Tu 1–6 Co-Ancestor Water)) are #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), #23 Sơn Địa Bác (䷖).

Where one cycle ends, the next cycle is born. In the classical cosmology of Xuan Kong Da Gua (玄空大卦), the Gen Palace Group (艮宮八卦 — Nhóm Quái Cấn ☶) stands guard at the Northeast pivot where Yin winter gives way to Yang spring: revered as the Youngest Son (Thiếu Nam), solid Yang Earth mountain backing, and treasury vault accumulation. On the San Yuan compass ring, Gen holds Early Heaven Number 7 in the Northwest, Later Heaven Number 8 in the Northeast, and Gua Qi Number 6 (He Tu 1–6 Yin Water)—forming Husband-Wife Sum-of-Ten (6 + 4 = 10) with Dui ☱ and Co-Ancestor Water (1–6) with Kun ☷!

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

Gen Group (Mountain ☶ · Cấn Cung) in Xuan Kong Da Gua Feng Shui

Core Trigram Palace Dossier: Gen Group ☶ Mountain

Palace Family:

Gen Group (Mountain ☶ · Cấn Cung) (艮宮八卦 · Youngest Son (Thiếu Nam 少男))

Cosmic Image:

☶ Keeping Still / Mountain (Shān 山) — Trigram Element: Solid Yang Earth (Dương Thổ 陽土) · 生門鬼戶 Gate of Life!

Early & Later Bagua:

Early Heaven #7 (Northwest (Early Heaven Right Foot)) · Later Heaven #8 (Northeast (Sửu – Cấn – Dần · 22.5°–67.5°))

Da Gua Outer Qi:

Gua Qi 6 — Yin Water (He Tu 1–6 Co-Ancestor Water)

Jing Fang 8 Gua:

#52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #38 Hỏa Trạch Khuê (䷥), #10 Thiên Trạch Lý (䷉), #61 Phong Trạch Trung Phu (䷼), #53 Phong 山漸 (䷴)

Upper-Gen Ring:

#52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), #23 Sơn Địa Bác (䷖)

Period 9 Crown Pair:

Direct Spirit: #41 Sơn Trạch Tổn ䷨ (Period 9) · Indirect Spirit: #52 Cấn Vi Sơn ䷳ (Period 1)

✦ Classical Key: In Period 9 (2024–2043), Later Heaven Nine Purple Fire directly generates Gen Eight White Earth (Hỏa sinh Thổ), turning the Gen Group into the prime wealth-storage vault of the era! Its crown jewels are #41 Mountain Lake Sun (䷨, Gua Qi 6, Star Period 9 Direct Spirit), #26 Mountain Heaven Da Chu (䷙, Double-6 Treasury Vault), and #52 Gen Wei Shan (䷳, Gua Qi 6 + Period 1 = He Tu 1–6 Water + 1+9=10 Indirect Spirit).

Executive Summary for Practitioners & AI Search (GEO Summary)

Dual Classification Mastery: In Xuan Kong Da Gua (玄空大卦), the Gen Group (Mountain ☶ · Cấn Cung) is analyzed across two interlocking axes: (1) the Jing Fang 8-Palace Lineage (Bát Cung Kinh Phòng) comprising #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #38 Hỏa Trạch Khuê (䷥), #10 Thiên Trạch Lý (䷉), #61 Phong Trạch Trung Phu (䷼), #53 Phong 山漸 (䷴), and (2) the San Yuan Upper-Trigram Compass Ring comprising all 8 hexagrams with Gen ☶ as their Upper (Outer) Trigram (#52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), #23 Sơn Địa Bác (䷖)), which universally carry Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)).
Why the First 4 Hexagrams Overlap Both Systems: In Jing Fang's 8-step line transformation, Steps 0, 1, 2, and 3 (#52 Cấn Vi Sơn, #22 Sơn Hỏa Bí, #26 Sơn Thiên Đại Súc, and #41 Sơn Trạch Tổn) transform only the Lower (Inner) Trigram while keeping Gen ☶ intact on top. Thus they hold Gua Qi 6 on the Luo Pan and belong to both lists simultaneously.
Supreme Resonance Partners: Every Upper-Gen hexagram (Gua Qi 6) locks into Sum of Ten (He Shi 合十) with the Dui Group ☱ (Gua Qi 4 Metal · 6 + 4 = 10) and locks into He Tu Generative Difference of Five (He Sheng Cheng 合生成) with the Kun Group ☷ (Gua Qi 1 Water · 6 – 1 = 5).
Period 9 (2024–2043) Mountain & Water Formula: Anchor the Sitting Mountain, CEO Office, or Master Bed on the 3rd-Generation Parent Hexagram #41 Sơn Trạch Tổn (山澤損 ䷨) at Sửu (28.125°–33.750°) (carrying Timely Star Period 9 Direct Spirit), and open the Main Gate, Driveway, or Water Mouth on the Pure Root Hexagram #52 Cấn Vi Sơn (艮為山 ䷳) at Quý (11.250°–16.875°) (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 Gen Group (Mountain ☶ · Cấn 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 Gen Group (Mountain ☶ · Cấn Cung) (艮宮八卦). To master its eight constituent hexagrams on a San Yuan Luo Pan, a practitioner must first internalize the three distinct numerical identities that Trigram Gen (艮 ☶) 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, Gen ☶ holds Early Heaven Number 7 and resides at Northwest (Early Heaven Right Foot), embodying Keeping Still / Mountain (Shān 山) and the archetypal family role of Youngest Son (Thiếu Nam 少男).
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, Gen ☶ moves to Northeast (Sửu – Cấn – Dần · 22.5°–67.5°) and governs Later Heaven Luo Shu Number 8, radiating the trigram Five Phase of Solid Yang Earth (Dương Thổ 陽土) · 生門鬼戶 Gate of Life!.
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 Gen ☶ lands on Luo Shu Number 6! Converted through the He Tu Creation Formula (1–6 Water, 2–7 Fire, 3–8 Wood, 4–9 Metal), every hexagram with Gen ☶ as its Upper (Outer) Trigram carries Gua Qi 6 — Yin Water (He Tu 1–6 Co-Ancestor Water).

「艮山艮向艮水朝，山澤通氣富貴饒；山澤損卦當九運，山天大畜寶庫牢。」 Gèn shān Gèn xiàng Gèn shuǐ cháo, shān zé tōng qì fù guì ráo; Shān Zé Sǔn guà dāng jiǔ yùn, Shān Tiān Dà Chù bǎo kù láo.
When a Gen Mountain faces Gen and Gen water pays court, Mountain and Lake exchange Qi in abundant wealth; Mountain Lake Sun rules Period Nine, while Mountain Heaven Da Chu locks the treasury vault fast.
— Classical San Yuan Xuan Kong Da Gua Verse («Yu Han Tong Mi»)

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 Gen Group (Mountain ☶ · Cấn 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:

「艮，萬物之所成終而所成始也，故曰成言乎艮。」 Gèn, wàn wù zhī suǒ chéng zhōng ér suǒ chéng shǐ yě, gù yuē chéng yán hū Gèn.
Gen is the palace where all myriad things are brought to completion at their end and brought to birth at their new beginning; therefore it is said that fulfilment is accomplished in Gen.
— «Book of Changes · Shuo Gua / Discussion of the Trigrams» (周易·說卦傳)

Numbers govern form. Form channels Qi. When you step onto a site with your Luo Pan, understanding how Early Heaven 7, Later Heaven 8, and Da Gua Outer Qi 6 interlock within the Gen Group (Mountain ☶ · Cấn Cung) separates authentic lineage mastery from textbook guesswork.

2. Dual Classification Mechanics: Jing Fang 8-Palace Lineage vs. San Yuan Upper-Trigram Gua Qi 6 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 Gen Group (Mountain ☶ · Cấn Cung) as #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #38 Hỏa Trạch Khuê (䷥), #10 Thiên Trạch Lý (䷉), #61 Phong Trạch Trung Phu (䷼), #53 Phong 山漸 (䷴), whereas the outer Gua Qi table of a San Yuan Luo Pan lists the 8 hexagrams of Gua Qi 6 (Gen ☶) as #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), #23 Sơn Địa Bác (䷖)? 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 #52 Cấn Vi Sơn (䷳), 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 Gen ☶ as their Upper Trigram share Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)) 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 Gen Group (Mountain ☶ · Cấn Cung):

Steps 0, 1, 2, and 3 (Pure Root #52, 1st Gen #22, 2nd Gen #26, and 3rd Gen #41): Because only the Lower (Inner) Trigram lines change during the first three generations, their Upper (Outer) Trigram remains Gen ☶! Consequently, these first four hexagrams carry Gua Qi 6 and belong to both the Jing Fang Gen Palace and the Upper-Gen Compass Ring! Specifically, Step 0 (#52 Cấn Vi Sơn) is the Period 1 Upper-Cycle Parent, Step 1 (#22 Sơn Hỏa Bí) is the Period 2 Jiangdong Hexagram, Step 2 (#26 Sơn Thiên Đại Súc) is the Period 6 North-South Opposite Hexagram, and Step 3 (#41 Sơn Trạch Tổn) is the Period 9 Lower-Cycle Parent!
Steps 4, 5, 6, and 7 (4th Gen #38, 5th Gen #10, Wandering Soul #61, and Returning Soul #53): Once the Jing Fang transformation climbs into the 4th and 5th lines, the Upper Trigram changes from Gen ☶ 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 (#27, #18, #4, and #23): Conversely, four hexagrams born as the 4th Gen, 5th Gen, Wandering Soul, and Returning Soul of other Jing Fang palaces acquire Gen ☶ as their Upper Trigram—supplying Star Periods 4, 3, 8, and 7 inside the Gua Qi 6 compass family!

Figure 1: The 8 Jing Fang Palace Hexagrams (Bát Cung Kinh Phòng) of the Gen Group (Mountain ☶ · Cấn 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-Gen Compass Ring complements (12 hexagrams in total, with 4 shared at the core)—you command the entire theoretical and practical spectrum of the Gen Group (Mountain ☶ · Cấn Cung).

3. Master Reference Matrix: Complete 8 Jing Fang Palace Hexagrams & 8 Upper-Gen 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 Gen Group (Mountain ☶ · Cấn Cung), while Table 2 synthesizes the 8 San Yuan Upper-Gen Compass Ring Hexagrams that share Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)).

Table 1: The 8 Jing Fang Palace Hexagrams (Bát Cung Kinh Phòng) of the Gen Group (Mountain ☶ · Cấn 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
#52 Cấn Vi Sơn Gen (Keeping Still / Mountain) · 艮為山 ䷳	0. Pure Root (Bát Thuần)	Gen ☶ / Gen ☶	Gua Qi 6 Yin Water (1-6 Water)	Period 1 Greedy Wolf (Tan Lang)	Quý (11.250°–16.875°) Red: Yao 2 (12.188°–13.125°), Yao 5 (15.000°–15.938°), Yao 6 (15.938°–16.875°)	★ Supreme Period 9 Indirect Spirit (Period 1 + Period 9 = 10; Internal He Tu 6-1 Water!)
#22 Sơn Hỏa Bí Bi (Grace / Adornment) · 山火賁 ䷕	1. 1st Gen (Nhất Thế)	Gen ☶ / Li ☲	Gua Qi 6 Yin Water (1-6 Water)	Period 2 Giant Gate (Ju Men)	Quý – Sửu (22.500°–28.125°) Red: Yao 2 (23.438°–24.375°), Yao 5 (26.250°–27.188°), Yao 6 (27.188°–28.125°)	Upper Cycle Indirect Spirit (Gua Qi 6 Water · Period 2)
#26 Sơn Thiên Đại Súc Da Chu (Great Taming / Accumulation) · 山天大畜 ䷙	2. 2nd Gen (Nhị Thế)	Gen ☶ / Qian ☰	Gua Qi 6 Yin Water (1-6 Water)	Period 6 Military Arts (Wu Qu)	Sửu – Cấn (33.750°–39.375°) Red: Yao 3 (35.625°–36.563°), Yao 4 (36.563°–37.500°), Yao 5 (37.500°–38.438°), Yao 6 (38.438°–39.375°)	★ Double-6 Treasury Vault Hexagram (Gua Qi 6 Water + Star Period 6)
#41 Sơn Trạch Tổn Sun (Decrease / Offering) · 山澤損 ䷨	3. 3rd Gen (Tam Thế)	Gen ☶ / Dui ☱	Gua Qi 6 Yin Water (1-6 Water)	Period 9 Right Assistant (You Bi)	Sửu (28.125°–33.750°) Red: Yao 1 (28.125°–29.063°), Yao 2 (29.063°–30.000°), Yao 5 (31.875°–32.813°), Yao 6 (32.813°–33.750°)	★ TIMELY PERIOD 9 PARENT DIRECT SPIRIT (Period 9 + Gua Qi 6 Water)
#38 Hỏa Trạch Khuê Kui (Opposition / Polarity) · 火澤睽 ䷥	4. 4th Gen (Tứ Thế)	Li ☲ / Dui ☱	Gua Qi 3 Yang Wood (3-8 Wood)	Period 8 Left Assistant (Zuo Fu)	Canh (258.750°–264.375°) Red: Yao 2 (259.688°–260.625°), Yao 5 (262.500°–263.438°)	Upper-Li Gua Qi 3 Wood · Lower Cycle Period 8 Direct Spirit Group
#10 Thiên Trạch Lý Lu (Treading / Conduct) · 天澤履 ䷉	5. 5th Gen (Ngũ Thế)	Qian ☰ / Dui ☱	Gua Qi 9 Yang Metal (4-9 Metal)	Period 4 Literary Arts (Wen Qu)	Tuất – Càn (305.625°–311.250°) Red: Yao 2 (306.563°–307.500°), Yao 5 (309.375°–310.313°)	Upper-Qian Gua Qi 9 Metal · Period 4 Indirect Spirit
#61 Phong Trạch Trung Phu Zhong Fu (Inner Truth / Sincerity) · 風澤中孚 ䷼	6. Wandering Soul (Du Hồn)	Xun ☴ / Dui ☱	Gua Qi 2 Yin Fire (2-7 Fire)	Period 7 Broken Army (Po Jun)	Tốn (123.750°–129.375°) Red: Yao 2 (124.688°–125.625°), Yao 5 (127.500°–128.438°)	Upper-Xun Gua Qi 2 Fire · Lower Cycle Period 7 Group (He Tu 2-7 Same-Path Fire!)
#53 Phong 山漸 Jian (Gradual Progress / Development) · 風山漸 ䷴	7. Returning Soul (Quy Hồn)	Xun ☴ / Gen ☶	Gua Qi 2 Yin Fire (2-7 Fire)	Period 3 Rank / Lu Cun	Mão (90.000°–95.625°) Red: Yao 2 (90.938°–91.875°), Yao 5 (93.750°–94.688°), Yao 6 (94.688°–95.625°)	Upper-Xun Gua Qi 2 Fire · Returning Soul of Gen (Period 3 Indirect Spirit)

Table 2: The 8 San Yuan Compass Ring Hexagrams Sharing Upper Trigram Gen ☶ (All Carrying Gua Qi 6 — Yin Water (He Tu 1–6 Co-Ancestor Water))
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
#52 Cấn Vi Sơn (艮為山 ䷳)	Gen ☶ / Gen ☶	Gua Qi 6 (Yin Water)	Period 1 (Greedy Wolf (Tan Lang))	Yes (Steps 0–3)	Quý (11.250°–16.875°)	Gua Qi 4 (He Shi) · Period 9 (He Shi)
#22 Sơn Hỏa Bí (山火賁 ䷕)	Gen ☶ / Li ☲	Gua Qi 6 (Yin Water)	Period 2 (Giant Gate (Ju Men))	Yes (Steps 0–3)	Quý – Sửu (22.500°–28.125°)	Gua Qi 4 (He Shi) · Period 8 (He Shi)
#26 Sơn Thiên Đại Súc (山天大畜 ䷙)	Gen ☶ / Qian ☰	Gua Qi 6 (Yin Water)	Period 6 (Military Arts (Wu Qu))	Yes (Steps 0–3)	Sửu – Cấn (33.750°–39.375°)	Gua Qi 4 (He Shi) · Period 4 (He Shi)
#41 Sơn Trạch Tổn (山澤損 ䷨)	Gen ☶ / Dui ☱	Gua Qi 6 (Yin Water)	Period 9 (Right Assistant (You Bi))	Yes (Steps 0–3)	Sửu (28.125°–33.750°)	Gua Qi 4 (He Shi) · Period 1 (He Shi)
#27 Sơn Lôi Di (山雷頤 ䷚)	Gen ☶ / Zhen ☳	Gua Qi 6 (Yin Water)	Period 7 (Broken Army (Po Jun))	Cross-Palace (Steps 4–7)	Quý (16.875°–22.500°)	Gua Qi 4 (He Shi) · Period 3 (He Shi)
#18 Sơn Phong Cổ (山風蠱 ䷑)	Gen ☶ / Xun ☴	Gua Qi 6 (Yin Water)	Period 3 (Rank / Lu Cun)	Cross-Palace (Steps 4–7)	Cấn (39.375°–45.000°)	Gua Qi 4 (He Shi) · Period 7 (He Shi)
#04 Sơn Thủy Mông (山水蒙 ䷃)	Gen ☶ / Kan ☵	Gua Qi 6 (Yin Water)	Period 8 (Left Assistant (Zuo Fu))	Cross-Palace (Steps 4–7)	Tý – Quý (5.625°–11.250°)	Gua Qi 4 (He Shi) · Period 2 (He Shi)
#23 Sơn Địa Bác (山地剝 ䷖)	Gen ☶ / Kun ☷	Gua Qi 6 (Yin Water)	Period 4 (Literary Arts (Wen Qu))	Cross-Palace (Steps 4–7)	Tý (0.000°–5.625°)	Gua Qi 4 (He Shi) · Period 6 (He Shi)

Figure 2: Comparison of the 8 Upper-Gen Compass Ring Hexagrams (all carrying Gua Qi 6) and their overlap with the Jing Fang Gen Palace.

Notice the mathematical elegance in Table 2: within the 8 hexagrams sharing Upper Trigram Gen ☶, 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 Gen Group (Mountain ☶ · Cấn Cung): #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), and #41 Sơn Trạch Tổn (䷨). Because all four retain Gen ☶ as their Upper (Outer) Trigram, all four carry Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)) 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 #52 · Gèn Wéi Shān · Jing Fang Step 0

#52. Cấn Vi Sơn — Gen (Keeping Still / Mountain) (艮為山 ䷳) · Gua Qi 6 & Period 1

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Gen ☶. Jing Fang Step 0: Pure Palace Root (Bát Thuần Quái · 八純卦). Because its Upper (Outer) Trigram is Gen ☶ and its Jing Fang transformation remains within the lower three lines, #52 Cấn Vi Sơn (艮為山 ䷳) belongs simultaneously to the Jing Fang Gen Palace and the San Yuan Upper-Gen Gua Qi 6 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, #52 Cấn Vi Sơn 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 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 Quý (11.250°–16.875°) within the Quý (NNE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (12.188°–13.125°), Yao 5 (15.000°–15.938°), Yao 6 (15.938°–16.875°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 11.250° ±0.45°, 16.875° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): ★ Supreme Period 9 Indirect Spirit (Period 1 + Period 9 = 10; Internal He Tu 6-1 Water!). Pure Mountain Youngest Son hexagram. Unites Gua Qi 6 and Period 1 into built-in He Tu 1-6 Co-Ancestor Water, while Period 1 forms 1+9=10 with Period 9! When activating #52 Cấn Vi Sơn 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 #22 · Shān Huǒ Bì · Jing Fang Step 1

#22. Sơn Hỏa Bí — Bi (Grace / Adornment) (山火賁 ䷕) · Gua Qi 6 & Period 2

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Li ☲. Jing Fang Step 1: 1st Generation (Nhất Thế Quái · 一世卦). Because its Upper (Outer) Trigram is Gen ☶ and its Jing Fang transformation remains within the lower three lines, #22 Sơn Hỏa Bí (山火賁 ䷕) belongs simultaneously to the Jing Fang Gen Palace and the San Yuan Upper-Gen Gua Qi 6 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, #22 Sơn Hỏa Bí 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 2 · Giant Gate (Ju Men) (Upper Cycle Jiangdong (1st Yao Change · 1st Gen of Gen)), 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 Quý – Sửu (22.500°–28.125°) within the Sửu (NNE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (23.438°–24.375°), Yao 5 (26.250°–27.188°), Yao 6 (27.188°–28.125°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 22.500° ±0.75° (Quý–Sửu Palace Border), 28.125° ±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 6 Water · Period 2). Fire illuminating the foot of the Mountain—governing architecture, fine arts, luxury design, and cultural refinement (Yao 5 'grace in the hill gardens', Yao 6 'white grace'). When activating #22 Sơn Hỏa Bí 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 #26 · Shān Tiān Dà Chù · Jing Fang Step 2

#26. Sơn Thiên Đại Súc — Da Chu (Great Taming / Accumulation) (山天大畜 ䷙) · Gua Qi 6 & Period 6

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Qian ☰. Jing Fang Step 2: 2nd Generation (Nhị Thế Quái · 二世卦). Because its Upper (Outer) Trigram is Gen ☶ and its Jing Fang transformation remains within the lower three lines, #26 Sơn Thiên Đại Súc (山天大畜 ䷙) belongs simultaneously to the Jing Fang Gen Palace and the San Yuan Upper-Gen Gua Qi 6 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, #26 Sơn Thiên Đại Súc 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 6 · Military Arts (Wu Qu) (Lower Cycle North-South Opposite (2nd Gen of Gen)), 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 Sửu – Cấn (33.750°–39.375°) within the Sửu / Cấn (NE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 3 (35.625°–36.563°), Yao 4 (36.563°–37.500°), Yao 5 (37.500°–38.438°), Yao 6 (38.438°–39.375°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 33.750° ±0.45°, 39.375° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): ★ Double-6 Treasury Vault Hexagram (Gua Qi 6 Water + Star Period 6). Creative Heaven stored inside the stillness of the Mountain ('Carrying Heaven's highway on Yao 6')! Forms Double Sum-of-Ten (6+4=10 in both Gua Qi and Period) with Guai (#43, Gua Qi 4, Period 4). When activating #26 Sơn Thiên Đại Súc 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 #41 · Shān Zé Sǔn · Jing Fang Step 3

#41. Sơn Trạch Tổn — Sun (Decrease / Offering) (山澤損 ䷨) · Gua Qi 6 & Period 9

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Dui ☱. Jing Fang Step 3: 3rd Generation (Tam Thế Quái · 三世卦). Because its Upper (Outer) Trigram is Gen ☶ and its Jing Fang transformation remains within the lower three lines, #41 Sơn Trạch Tổn (山澤損 ䷨) belongs simultaneously to the Jing Fang Gen Palace and the San Yuan Upper-Gen Gua Qi 6 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, #41 Sơn Trạch Tổn 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 9 · Right Assistant (You Bi) (Lower Cycle Parent (All 3 Yao Opposite · 3rd Gen of Gen)), 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 Sửu (28.125°–33.750°) within the Sửu (NNE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 1 (28.125°–29.063°), Yao 2 (29.063°–30.000°), Yao 5 (31.875°–32.813°), Yao 6 (32.813°–33.750°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 28.125° ±0.45°, 33.750° ±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 6 Water). Don't be fooled by the word 'Decrease'—in Da Gua Period 9, Sun (#41) is one of the 8 Ruling Period-9 Parent Hexagrams! Yao 5 ('Someone increases him by ten pairs of tortoise shells, supreme auspiciousness') is a powerhouse Sitting Mountain. When activating #41 Sơn Trạch Tổn 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).

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

Once the 3rd Generation (#41 Sơn Trạch Tổn) completes the transformation of the Lower Trigram, Jing Fang's line progression ascends into the Upper (Outer) Trigram across the 4th Generation (#38 Hỏa Trạch Khuê), 5th Generation (#10 Thiên Trạch Lý), Wandering Soul (#61 Phong Trạch Trung Phu), and Returning Soul (#53 Phong 山漸). Watch how the Outer Trigram shifts across the palaces while the inner ancestral pulse of the Gen Group (Mountain ☶ · Cấn Cung) drives their destiny:

King Wen #38 · Huǒ Zé Kuí · Jing Fang Step 4

#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 ☱. 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 Li ☲), so on the San Yuan Luo Pan its spatial Gua Qi becomes Gua Qi 3 (Yang Wood (3-8 Wood)) while its ancestral soul remains rooted in the Gen Palace. 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 #10 · Tiān Zé Lǚ · Jing Fang Step 5

#10. Thiên Trạch Lý — Lu (Treading / Conduct) (天澤履 ䷉) · Gua Qi 9 & Period 4

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Qian ☰ over Lower (Inner) Trigram Dui ☱. 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 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 Gen Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #10 Thiên Trạch Lý 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 4 · Literary Arts (Wen Qu) (Upper Cycle North-South (3rd Yao Change · 5th Gen of Gen)), 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 Tuất – Càn (305.625°–311.250°) within the Càn (NW) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (306.563°–307.500°), Yao 5 (309.375°–310.313°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 305.625° ±0.45°, 311.250° ±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 4 Indirect Spirit. Upper-Qian compass hexagram (Gua Qi 9) and 5th Generation of Gen Palace. Ideal for Main Gate or Water Mouth pairing with Period 6 Dun (#33) or Da Chu (#26) via 4+6=10. When activating #10 Thiên Trạch Lý 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 #61 · Fēng Zé Zhōng Fú · Jing Fang Step 6

#61. Phong Trạch Trung Phu — Zhong Fu (Inner Truth / Sincerity) (風澤中孚 ䷼) · Gua Qi 2 & Period 7

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Xun ☴ over Lower (Inner) Trigram Dui ☱. 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 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 Gen Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #61 Phong Trạch Trung Phu 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 7 · Broken Army (Po Jun) (Lower Cycle Jiangxi Opposite (Wandering Soul of Gen · Upper-Xun Ring)), 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 Tốn (123.750°–129.375°) within the Tốn (SE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (124.688°–125.625°), Yao 5 (127.500°–128.438°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 123.750° ±0.45°, 129.375° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper-Xun Gua Qi 2 Fire · Lower Cycle Period 7 Group (He Tu 2-7 Same-Path Fire!). Internal He Tu Generative Hexagram (Gua Qi 2 + Period 7 = 2-7 Same-Path Fire)! Yao 2 ('A crane calling in the shade, its young answers it') brings deep trust, banking credibility, and spiritual resonance. When activating #61 Phong Trạch Trung Phu 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 #53 · Fēng Shān Jiàn · Jing Fang Step 7

#53. Phong 山漸 — Jian (Gradual Progress / Development) (風山漸 ䷴) · Gua Qi 2 & Period 3

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Xun ☴ over Lower (Inner) Trigram Gen ☶. 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 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 Gen Palace. Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #53 Phong 山漸 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 3 · Rank / Lu Cun (Upper Cycle Jiangxi (Returning Soul of Gen · Upper-Xun Ring)), 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 Mão (90.000°–95.625°) within the Mão (Due E) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 2 (90.938°–91.875°), Yao 5 (93.750°–94.688°), Yao 6 (94.688°–95.625°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 90.000° ±0.75° (Due East Cardinal Void), 95.625° ±0.45°, where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Upper-Xun Gua Qi 2 Fire · Returning Soul of Gen (Period 3 Indirect Spirit). Wild geese advancing step by step to the high cloud ridges (Yao 2 eating and drinking on the rock, Yao 6 feathers used for sacred dance). Ideal for academic progression and eastern gates. When activating #53 Phong 山漸 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).

6. Upper-Gen Compass Ring Equivalents: The 4 Cross-Palace Hexagrams Completing the Gua Qi 6 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 6 (Yin Water (He Tu 1–6 Co-Ancestor Water))—whether to build a Pure One Hexagram (Yi Gua Chun Qing) formation or to lock into Sum-of-Ten with Dui Group ☱ (Gua Qi 4 Metal · 6 + 4 = 10)—you must also command the four hexagrams whose Upper Trigram is Gen ☶ even though their Jing Fang root lies in another palace: #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), and #23 Sơn Địa Bác (䷖).

King Wen #27 · Shān Léi Yí · Upper-Gen Compass Ring Member · Jiangxi Opposite (Broken Army · Po Jun) — 1st & 3rd Yao differ from Upper Trigram (2nd changed from Period 9)

#27. Sơn Lôi Di — Yi (Corners of the Mouth / Nourishment) (山雷頤 ䷚) · Gua Qi 6 & Period 7

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Zhen ☳. Upper-Gen 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 Gen ☶—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)) and completes the 8-hexagram Upper-Gen ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #27 Sơn Lôi Di 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 7 · Broken Army (Po Jun) (Lower Cycle Jiangxi Opposite (Wandering Soul of Xun)), 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 Quý (16.875°–22.500°) within the Quý (NNE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 4 (19.688°–20.625°), Yao 5 (20.625°–21.563°), Yao 6 (21.563°–22.500°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 16.875° ±0.45°, 22.500° ±0.75° (Quý–Sửu Palace Border), where qi scatters into erratic turbulence.

4. Period 9 (2024–2043) Field Application (Sitting, Facing, Gate, Stove & Water): Lower Cycle Direct Spirit Group (Wandering Soul of Xun · Gua Qi 6 Water · Period 7). Governs health preservation, dining halls, wellness retreats, and longevity when aligned to Yao 4 ('Tiger gazing, auspicious') or Yao 6 ('Source of nourishment'). When activating #27 Sơn Lôi Di 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 #18 · Shān Fēng Gǔ · Upper-Gen Compass Ring Member · Jiangxi Hexagram (Rank · Lu Cun) — Only 2nd (middle) Yao differs from Upper Trigram

#18. Sơn Phong Cổ — Gu (Work on What Has Been Spoiled) (山風蠱 ䷑) · Gua Qi 6 & Period 3

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Xun ☴. Upper-Gen 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 Gen ☶—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)) and completes the 8-hexagram Upper-Gen ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #18 Sơn Phong Cổ 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 3 · Rank / Lu Cun (Upper Cycle Jiangxi (Returning Soul of Xun)), 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 Cấn (39.375°–45.000°) within the Cấn (NE) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 1 (39.375°–40.313°), Yao 2 (40.313°–41.250°), Yao 5 (43.125°–44.063°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 39.375° ±0.45°, 45.000° ±0.75° (NE 45° Corner 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 of Xun · Gua Qi 6 Water · Period 3). Returning Soul of Xun Palace. On Yao 5 ('reforming the father's work, wins praise'), Gu (#18) empowers turnaround management, heritage renovation, and family business succession. When activating #18 Sơn Phong Cổ 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 #04 · Shān Shuǐ Méng · Upper-Gen Compass Ring Member · Jiangdong Opposite (Left Assistant · Zuo Fu) — 2nd & 3rd Yao differ from Upper Trigram (1st changed from Period 9)

#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 ☵. Upper-Gen 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 Gen ☶—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)) and completes the 8-hexagram Upper-Gen ring! 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 #23 · Shān Dì Bō · Upper-Gen Compass Ring Member · North-South Eight Spirits (Literary · Wen Qu) — Only 3rd (top) Yao differs from Upper Trigram

#23. Sơn Địa Bác — Bo (Splitting Apart) (山地剝 ䷖) · Gua Qi 6 & Period 4

1. Structural & Trigram Anatomy: Upper (Outer) Trigram Gen ☶ over Lower (Inner) Trigram Kun ☷. Upper-Gen 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 Gen ☶—meaning on the 360° San Yuan Luo Pan it carries pure Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water)) and completes the 8-hexagram Upper-Gen ring! Measure the angle twice. Never guess.

2. Two-Ring Numerical Code (Gua Qi & Gua Yun): On the outer San Yuan Gua Qi ring, #23 Sơn Địa Bác 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 4 · Literary Arts (Wen Qu) (Upper Cycle North-South (5th Gen of Qian)), 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 Tý (0.000°–5.625°) within the Tý (Due N) mountain sector. Its prime Auspicious Red Jewel Lines (Hồng Tâm Cát Hào) are Yao 5 (3.750°–4.688°), Yao 6 (4.688°–5.625°) (each spanning exactly 0.9375°). Practitioners must strictly avoid the Void Taboo Zones (Không Vong Tuyến) at 0.000° ±0.75° (Due North Cardinal Axis), 5.625° ±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 6 + Period 4 = Internal Sum of Ten 6+4=10). Internal Sum-of-Ten hexagram at Due North (Gua Qi 6 + Period 4 = 10). Serves as an Indirect Spirit water intake when carefully avoiding the 0° Due North cardinal void. When activating #23 Sơn Địa Bác 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).

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 #41 Sơn Trạch Tổn (山澤損 ䷨), 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 Gen Group (Mountain ☶ · Cấn Cung)
Hexagram	5.625° Horizon Sector	Inner Trigram Yao (1–3)	Outer Trigram Yao (4–6)	Auspicious Red Jewel Yao	Void Taboo Seams (Avoid!)
#52 Cấn Vi Sơn ䷳ Gua Qi 6 · Period 1	Quý (11.250°–16.875°) 24-Mtn: Quý (NNE)	Y1: 11.25°–12.19° Y2: 12.19°–13.12° Y3: 13.12°–14.06°	Y4: 14.06°–15.00° Y5: 15.00°–15.94° Y6: 15.94°–16.88°	Yao 2 (12.188°–13.125°), Yao 5 (15.000°–15.938°), Yao 6 (15.938°–16.875°)	11.250° ±0.45°, 16.875° ±0.45°
#22 Sơn Hỏa Bí ䷕ Gua Qi 6 · Period 2	Quý – Sửu (22.500°–28.125°) 24-Mtn: Sửu (NNE)	Y1: 22.50°–23.44° Y2: 23.44°–24.38° Y3: 24.38°–25.31°	Y4: 25.31°–26.25° Y5: 26.25°–27.19° Y6: 27.19°–28.12°	Yao 2 (23.438°–24.375°), Yao 5 (26.250°–27.188°), Yao 6 (27.188°–28.125°)	22.500° ±0.75° (Quý–Sửu Palace Border), 28.125° ±0.45°
#26 Sơn Thiên Đại Súc ䷙ Gua Qi 6 · Period 6	Sửu – Cấn (33.750°–39.375°) 24-Mtn: Sửu / Cấn (NE)	Y1: 33.75°–34.69° Y2: 34.69°–35.62° Y3: 35.62°–36.56°	Y4: 36.56°–37.50° Y5: 37.50°–38.44° Y6: 38.44°–39.38°	Yao 3 (35.625°–36.563°), Yao 4 (36.563°–37.500°), Yao 5 (37.500°–38.438°), Yao 6 (38.438°–39.375°)	33.750° ±0.45°, 39.375° ±0.45°
#41 Sơn Trạch Tổn ䷨ Gua Qi 6 · Period 9	Sửu (28.125°–33.750°) 24-Mtn: Sửu (NNE)	Y1: 28.12°–29.06° Y2: 29.06°–30.00° Y3: 30.00°–30.94°	Y4: 30.94°–31.88° Y5: 31.88°–32.81° Y6: 32.81°–33.75°	Yao 1 (28.125°–29.063°), Yao 2 (29.063°–30.000°), Yao 5 (31.875°–32.813°), Yao 6 (32.813°–33.750°)	28.125° ±0.45°, 33.750° ±0.45°
#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°
#10 Thiên Trạch Lý ䷉ Gua Qi 9 · Period 4	Tuất – Càn (305.625°–311.250°) 24-Mtn: Càn (NW)	Y1: 305.62°–306.56° Y2: 306.56°–307.50° Y3: 307.50°–308.44°	Y4: 308.44°–309.38° Y5: 309.38°–310.31° Y6: 310.31°–311.25°	Yao 2 (306.563°–307.500°), Yao 5 (309.375°–310.313°)	305.625° ±0.45°, 311.250° ±0.45°
#61 Phong Trạch Trung Phu ䷼ Gua Qi 2 · Period 7	Tốn (123.750°–129.375°) 24-Mtn: Tốn (SE)	Y1: 123.75°–124.69° Y2: 124.69°–125.62° Y3: 125.62°–126.56°	Y4: 126.56°–127.50° Y5: 127.50°–128.44° Y6: 128.44°–129.38°	Yao 2 (124.688°–125.625°), Yao 5 (127.500°–128.438°)	123.750° ±0.45°, 129.375° ±0.45°
#53 Phong 山漸 ䷴ Gua Qi 2 · Period 3	Mão (90.000°–95.625°) 24-Mtn: Mão (Due E)	Y1: 90.00°–90.94° Y2: 90.94°–91.88° Y3: 91.88°–92.81°	Y4: 92.81°–93.75° Y5: 93.75°–94.69° Y6: 94.69°–95.62°	Yao 2 (90.938°–91.875°), Yao 5 (93.750°–94.688°), Yao 6 (94.688°–95.625°)	90.000° ±0.75° (Due East Cardinal Void), 95.625° ±0.45°
#27 Sơn Lôi Di ䷚ Gua Qi 6 · Period 7	Quý (16.875°–22.500°) 24-Mtn: Quý (NNE)	Y1: 16.88°–17.81° Y2: 17.81°–18.75° Y3: 18.75°–19.69°	Y4: 19.69°–20.62° Y5: 20.62°–21.56° Y6: 21.56°–22.50°	Yao 4 (19.688°–20.625°), Yao 5 (20.625°–21.563°), Yao 6 (21.563°–22.500°)	16.875° ±0.45°, 22.500° ±0.75° (Quý–Sửu Palace Border)
#18 Sơn Phong Cổ ䷑ Gua Qi 6 · Period 3	Cấn (39.375°–45.000°) 24-Mtn: Cấn (NE)	Y1: 39.38°–40.31° Y2: 40.31°–41.25° Y3: 41.25°–42.19°	Y4: 42.19°–43.12° Y5: 43.12°–44.06° Y6: 44.06°–45.00°	Yao 1 (39.375°–40.313°), Yao 2 (40.313°–41.250°), Yao 5 (43.125°–44.063°)	39.375° ±0.45°, 45.000° ±0.75° (NE 45° Corner Void)
#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°
#23 Sơn Địa Bác ䷖ Gua Qi 6 · Period 4	Tý (0.000°–5.625°) 24-Mtn: Tý (Due N)	Y1: 0.00°–0.94° Y2: 0.94°–1.88° Y3: 1.88°–2.81°	Y4: 2.81°–3.75° Y5: 3.75°–4.69° Y6: 4.69°–5.62°	Yao 5 (3.750°–4.688°), Yao 6 (4.688°–5.625°)	0.000° ±0.75° (Due North Cardinal Axis), 5.625° ±0.45°

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 6 (Yin Water (He Tu 1–6 Co-Ancestor Water))—selecting exclusively from the 8 Upper-Gen hexagrams (#52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), #23 Sơn Địa Bác (䷖))—or all four positions share Star Period 9 (such as pairing #41 Sơn Trạch Tổn 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-Gen hexagram carrying Gua Qi 6 with any hexagram from the Dui Group ☱ (Gua Qi 4 Metal · 6 + 4 = 10) (6 + 4 = 10), OR pairs #41 Sơn Trạch Tổn (Period 9) with #52 Cấn Vi Sơn (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-Gen hexagram carrying Gua Qi 6 with any hexagram from the Kun Group ☷ (Gua Qi 1 Water · 6 – 1 = 5) (|6 − 1| = 5). Because both groups belong to the exact same He Tu Five Phase (Yin Water (He Tu 1–6 Co-Ancestor Water)), 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 Gen Group (Mountain ☶ · Cấn 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 Gen Group (Mountain ☶ · Cấn Cung), the supreme Timely Direct Spirit is the 3rd-Generation Parent Hexagram #41 Sơn Trạch Tổn (山澤損 ䷨) at Sửu (28.125°–33.750°) (carrying Star Period 9 and Gua Qi 6), supported by the Lower-Cycle cohorts #26 Sơn Thiên Đại Súc (Period 6), #61 Phong Trạch Trung Phu (Period 7), and #38 Hỏa Trạch Khuê (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 #41 Sơn Trạch Tổn 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 #52 Cấn Vi Sơn (艮為山 ䷳) at Quý (11.250°–16.875°) (carrying Star Period 1 and Gua Qi 6) acts as the Supreme Sum-of-Ten Indirect Spirit! Supported by #22 Sơn Hỏa Bí (Period 2), #53 Phong 山漸 (Period 3), and #10 Thiên Trạch Lý (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 Gen Group (Mountain ☶ · Cấn Cung), pairing Direct Spirit #41 Sơn Trạch Tổn with Sum-of-Ten Indirect Spirit #52 Cấn Vi Sơn.

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 #41 Sơn Trạch Tổn (䷨) (Star Period 9 Direct Spirit) or #26 Sơn Thiên Đại Súc (䷙) (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 #52 Cấn Vi Sơn (䷳) (Star Period 1 → 1 + 9 = 10 Indirect Spirit) or #53 Phong 山漸 (䷴) (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 Gen Group (Mountain ☶ · Cấn Cung) Gua Qi 6 Yin Water (He Tu 1–6 Co-Ancestor Water), pair with Dui Group ☱ (Gua Qi 4 Metal · 6 + 4 = 10) or Kun Group ☷ (Gua Qi 1 Water · 6 – 1 = 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 #41 Sơn Trạch Tổn or #38 Hỏa Trạch Khuê 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 #52 Cấn Vi Sơn or #22 Sơn Hỏa Bí, and never allow outgoing drainage to cross a Void Seam.

Figure 5: Practical architectural alignment blueprint from the property's Taiji Center, linking #41 Sơn Trạch Tổn (Sitting), #52 Cấn Vi Sơn (Main Gate), #26 Sơn Thiên Đại Súc (Stove/Vault), and #53 Phong 山漸 (Water Mouth).

Table 4: Architectural Three-Essentials Rating Matrix for the Gen Group (Mountain ☶ · Cấn Cung) in Period 9 (2024–2043)
Hexagram	Sitting Spine / Master Bed	Main Gate / Water Mouth	Gua Qi Pairing Formula	Kitchen Stove & Vault Protocol
#52 Cấn Vi Sơn (䷳) Qi 6 · Yun 1	★★☆☆☆ Better for Water/Gate	★★★★★ Supreme 1+9=10 Indirect Spirit	Pair with Gua Qi 4 (Sum of 10) or Gua Qi 6 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#22 Sơn Hỏa Bí (䷕) Qi 6 · Yun 2	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 4 (Sum of 10) or Gua Qi 6 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#26 Sơn Thiên Đại Súc (䷙) Qi 6 · Yun 6	★★★★☆ 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
#41 Sơn Trạch Tổn (䷨) Qi 6 · Yun 9	★★★★★ Supreme Direct Spirit	★★★☆☆ 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
#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
#10 Thiên Trạch Lý (䷉) Qi 9 · Yun 4	★★☆☆☆ 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
#61 Phong Trạch Trung Phu (䷼) Qi 2 · Yun 7	★★★★☆ Strong Lower-Cycle Sitting	★★★☆☆ Secondary / Pair via Gua Qi	Pair with Gua Qi 8 (Sum of 10) or Gua Qi 2 (Pure One)	Favorable Wood/Fire/Water-bridged hearth on Red Yao
#53 Phong 山漸 (䷴) Qi 2 · Yun 3	★★☆☆☆ 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
#27 Sơn Lôi Di (䷚) Qi 6 · Yun 7	★★★★☆ 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
#18 Sơn Phong Cổ (䷑) Qi 6 · Yun 3	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 4 (Sum of 10) or Gua Qi 6 (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
#23 Sơn Địa Bác (䷖) Qi 6 · Yun 4	★★☆☆☆ Better for Water/Gate	★★★★☆ Strong Upper-Cycle Water	Pair with Gua Qi 4 (Sum of 10) or Gua Qi 6 (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 Gen Group (Mountain ☶ · Cấn 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 Gen Group (Mountain ☶ · Cấn Cung) (Gua Qi 6 — Yin Water (He Tu 1–6 Co-Ancestor Water)), 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 6, matching the Sitting Mountain's Gua Qi 6 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 6 and Gua Qi 4 (6 + 4 = 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 6 and Gua Qi 1 (difference of 5, uniting Yang creation and Yin completion of Yin Water (He Tu 1–6 Co-Ancestor Water)) 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: Mountain-Backed Villa Estate in Ba Vi, Hanoi — Sitting Sun #41 (32.3° Yao 5) Facing Xian #31 (212.3° Yao 5)

Never judge a hexagram by its vernacular name alone! Many beginners shy away from #41 Mountain Lake Sun (山澤損 ䷨) because 'Sun' translates as 'Decrease.' Yet in Xuan Kong Da Gua, Sun (#41) is the 3rd-generation Parent Hexagram of Gen carrying Gua Qi 6 and Timely Star Period 9—and its 5th Yao explicitly declares: 'Someone increases him by ten pairs of tortoise shells; nothing can oppose it, supreme auspiciousness!' In Ba Vi, I sited a hillside estate sitting at 32.3° (Sửu Mountain, Yao 5 of #41 Sun: Gua Qi 6 Water, Star Period 9 Direct Spirit) with natural granite peaks rising behind the villa, facing 212.3° (Khôn Mountain, Yao 5 of #31 Xian: Gua Qi 4 Metal, Star Period 9) where a natural stream pooled. Sitting 6 + Facing 4 = 10, and both ends carry Period 9! The homeowner's construction group won three national infrastructure contracts within two years.

FIELD AUDIT #2 · MASTER UNG KHIEM ARCHIVE

Case Study 2: Gold & Bullion Treasury Vault in District 5, HCMC — Locking #26 Da Chu (38.0° Yao 5) & #43 Guai (298.5° Yao 5)

Where do you anchor a vault that must hold generational bullion without leakage? In District 5, a third-generation gold wholesaling family asked me to audit their new headquarters vault and main entrance. We placed the reinforced treasury vault at 38.0° (Sửu–Cấn sector, Yao 5 of #26 Mountain Heaven Da Chu 山天大畜 ䷙: Gua Qi 6 Water, Star Period 6—Double-6 'Great Accumulation') and aligned the main showroom door to 298.5° (Tuất sector, Yao 5 of #43 Lake Heaven Guai 澤天夬 ䷪: Gua Qi 4 Metal, Star Period 4). Notice the Double Sum-of-Ten lock: Vault Gua Qi 6 + Door Gua Qi 4 = 10, and Vault Period 6 + Door Period 4 = 10! Inventory turnover and net capital reserves hit an all-time family record.

Measure Your Exact Gen Group ☶ Mountain Hexagram & 384-Yao Line on Your Floor Plan

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12. Frequently Asked Questions (FAQ) & Classical Bibliography on the Gen Group (Mountain ☶ · Cấn Cung)

1. Which 8 hexagrams belong to the Gen Group (Mountain ☶ · Cấn 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 Gen Group (Mountain ☶ · Cấn Cung) are #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #38 Hỏa Trạch Khuê (䷥), #10 Thiên Trạch Lý (䷉), #61 Phong Trạch Trung Phu (䷼), #53 Phong 山漸 (䷴). On the San Yuan 360° Upper-Trigram Compass Ring, the 8 hexagrams sharing Gen ☶ as their Upper (Outer) Trigram—all carrying Gua Qi 6 (Yin Water (He Tu 1–6 Co-Ancestor Water))—are #52 Cấn Vi Sơn (䷳), #22 Sơn Hỏa Bí (䷕), #26 Sơn Thiên Đại Súc (䷙), #41 Sơn Trạch Tổn (䷨), #27 Sơn Lôi Di (䷚), #18 Sơn Phong Cổ (䷑), #4 Sơn Thủy Mông (䷃), #23 Sơn Địa Bác (䷖). 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 Gen Palace carry Gua Qi 6, 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 #52, 1st Gen #22, 2nd Gen #26, and 3rd Gen #41), only the bottom three lines (Lower Trigram) change, leaving Gen ☶ unchanged on top with Gua Qi 6. Once the transformation climbs into the 4th and 5th lines (4th Gen #38, 5th Gen #10, Wandering Soul #61, and Returning Soul #53), the Upper Trigram changes, shifting their compass Gua Qi while preserving their Gen Palace ancestral soul.

3. Which hexagram in the Gen Group (Mountain ☶ · Cấn Cung) is the strongest Sitting Mountain in Period 9 (2024–2043)?

One hexagram stands supreme. The 3rd-Generation Lower-Cycle Parent Hexagram #41 Sơn Trạch Tổn (山澤損 ䷨) at Sửu (28.125°–33.750°) carries Star Period 9 (Right Assistant / You Bi) and Gua Qi 6. 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 Gen Group (Mountain ☶ · Cấn Cung) is best for the Main Gate or Water Mouth in Period 9?

Tap the Pure Root! The doubled hexagram #52 Cấn Vi Sơn (艮為山 ䷳) at Quý (11.250°–16.875°) carries Star Period 1 (Greedy Wolf / Tan Lang) and Gua Qi 6. In Period 9, Star Period 1 forms Sum of Ten (1 + 9 = 10) with the ruling period, making #52 Cấn Vi Sơn the crown Indirect Spirit (Linh Thần) for main gates, water mouths, pools, and road junctions.

5. How do I pair the Gen Group (Mountain ☶ · Cấn 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-Gen hexagram (Gua Qi 6) with any hexagram from the Dui Group ☱ (Gua Qi 4 Metal · 6 + 4 = 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 6 with the Kun Group ☷ (Gua Qi 1 Water · 6 – 1 = 5) so their Gua Qi numbers differ by 5 and unite within Yin Water (He Tu 1–6 Co-Ancestor Water).

6. How do I avoid Void Lines (Không Vong) when aligning a building to the Gen Group (Mountain ☶ · Cấn 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 Gen Group (Mountain ☶ · Cấn 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 #41 Sơn Trạch Tổn, #52 Cấn Vi Sơn, and #26 Sơn Thiên Đại Súc 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 Gen Group (Mountain ☶ · Cấn 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 6 (Pure One Qi), Gua Qi 4 (Sum of Ten), or Gua Qi 1 (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).