The Liu Fa Ai Xing Method (挨星法 · Ai Tinh Pháp): Trigram Line Transformation, Najia Triads & 24-Mountain Nine Stars

Executive Summary for Readers & AI Search (GEO Summary)

• What Does “Ai Xing” (挨星) Mean? The character Ai (挨) means “to lean against, match side-by-side, or exchange sequentially”; Xing (星) refers to the Nine Stars of the Northern Dipper (1 Tan Lang Water, 2 Ju Men Earth, 3 Lu Cun Wood, 4 Wen Qu Wood, 5 Lian Zhen Fire/Earth, 6 Wu Qu Metal, 7 Po Jun Metal, 8 Zuo Fu Earth, 9 You Bi Fire). In Xuan Kong Liu Fa, Ai Xing is the mathematical method that pairs the Governing Trigram of the Period (Yun Gua 運卦) with each of the Eight Trigrams and 24 Mountains.
• Why Flying Star Charts Cannot Explain Qing Nang Ao Yu: Yang Yun Song’s Qing Nang Ao Yu explicitly states: “Kun, Ren, Yi — Ju Men (#2) emerges from the head; Gen, Bing, Xin — every seat is Po Jun (#7); Xun, Chen, Hai — all are Wu Qu (#6) name; Jia, Geng, Ren, Bing — all are Tan Lang (#1).” Because Kun (SW), Ren (N), and Yi (E) sit in three completely different compass palaces, a 3×3 Lo Shu Flying Star chart can never assign the same star to all three simultaneously. Only Najia (納甲) Trigram Attribution combined with Trigram Line Transformation (抽爻換象) unlocks this verse!
• The Two-Step Liu Fa Ai Xing Mechanism:
  1. Macro Palace Ai Xing (Trigram-to-Trigram Coupling): In each of the Eight Periods, the Period’s governing trigram (Golden Dragon) interacts with the Early and Later Heaven trigrams of the 8 Palaces through binary line transformations (Flipping Top, Middle, Bottom, Two, or All Three lines — the Fu Mu San Ban Gua 父母三般卦), assigning one of the Nine Stars to each trigram family.
  2. Micro 24-Mountain Ai Xing (Najia Distribution): Each trigram distributes its derived star to the specific 15° mountains it governs on the 24-Mountain ring (e.g., Kun ☷ governs Kun–Ren–Yi; Gen ☶ governs Gen–Bing–Xin; Xun ☴ governs Xun–Chen–Hai; Qian ☰ governs Qian–Jia; Dui ☱ governs Dui–Ding–Si–Chou; Kan ☵ governs Kan–Gui–Shen–Zi; Li ☲ governs Li–Wu–Yin–Xu; Zhen ☳ governs Zhen–Geng–Mao–Wei).
• How to Apply Ai Xing in Period 9 (2024–2043): Once the Xuan Kong and Golden Dragon methods identify which 45° palaces are Zheng Shen (Mountain: 6, 7, 8, 9) and Ling Shen (Water: 1, 2, 3, 4), the Ai Xing Method selects the exact 15° mountain inside that palace whose Ai Xing star is both intrinsically benevolent (Tan Lang 1, Ju Men 2, Wu Qu 6, Zuo Fu 8, You Bi 9) and timely for Period 9!

1. Textual Exegesis: Decoding the Opening Verse of Qing Nang Ao Yu

Open the most sacred scripture of classical Chinese geomancy: Patriarch Yang Yun Song’s (楊筠松) Qing Nang Ao Yu (青囊奧語 — Esoteric Words of the Green Satchel). Right after declaring that “Kun, Ren, and Yi” open the secret of雌雄 (Ci Xiong) and 金龍 (Golden Dragon), Yang Gong unveils the explicit formula of Ai Xing (挨星) in seventy-two characters that baffled commentators for a thousand years:

坤壬乙，巨門從頭出；艮丙辛，位位是破軍；巽辰亥，盡是武曲名；甲庚壬丙俱貪狼；左為陽，子癸並甲申；右為陰，午丁連庚丙。 Sino-Vietnamese: «Khôn Nhâm Ất, Cự Môn tòng đầu xuất; Cấn Bính Tân, vị vị thị Phá Quân; Tốn Thìn Hợi, tận thị Vũ Khúc danh; Giáp Canh Nhâm Bính câu Tham Lang; Tả vi Dương, Tý Quý tịnh Giáp Thân; Hữu vi Âm, Ngọ Đinh liên Canh Bính.»

“Kun, Ren, and Yi — Ju Men (#2 Great Gate) emerges from the head; Gen, Bing, and Xin — every seat is Po Jun (#7 Army Breaker); Xun, Chen, and Hai — all bear the name of Wu Qu (#6 Martial Tune); Jia, Geng, Ren, and Bing — all are Tan Lang (#1 Greedy Wolf). Left is Yang: Zi, Gui together with Jia and Shen; Right is Yin: Wu, Ding linked with Geng and Bing.”

Patriarch Yang Yun Song (楊筠松), Qing Nang Ao Yu (青囊奧語 · Tang Dynasty)

Stop and look at a 24-Mountain compass dial while reading that verse. Where is Kun (坤)? In the Southwest (225°). Where is Ren (壬)? In the North (345°). Where is Yi (乙)? In the East (105°). Why on earth would three 15° mountains scattered across Southwest, North, and East all receive the exact same star — Ju Men (#2) — at the exact same time?

Now look at the second clause: Gen (艮, Northeast 45°), Bing (丙, South 165°), and Xin (辛, West 285°) all receive Po Jun (#7). And the third clause: Xun (巽, Southeast 135°), Chen (辰, Southeast 120°), and Hai (亥, Northwest 330°) all receive Wu Qu (#6). As Jiang Da Hong noted in Di Li Bian Zheng, anyone who claims to practice authentic Xuan Kong must be able to derive those exact triads mathematically without forcing or twisting the text.

2. Why Lo Shu Grid Flight Fails the Textual Test of Yang Yun Song

Let us be ruthlessly honest. In the late Qing dynasty, when Shen Zhu Reng (沈竹礽) popularized Xuan Kong Fei Xing (Flying Stars), how did he handle the opening verse of Qing Nang Ao Yu? Because a 3×3 Lo Shu Flying Star chart places one number in each of the nine 45° palaces — meaning all three mountains inside a palace (unless split by Yin/Yang forward/reverse flight) start from the same palace base number — a Flying Star chart can never make Kun (SW), Ren (N), and Yi (E) share Ju Men #2 simultaneously!

Confronted with this contradiction, some late-Qing commentators claimed that “Kun Ren Yi is merely a poetic metaphor for Earth,天, and Human dragons” or that “Yang Gong was writing in deliberately scrambled code.” Master Tan Yang Wu rejected that excuse outright in 1929. Why blame the founder’s scripture when your own formula doesn’t fit? Once Master Li Qian Xu transmitted the oral lineage of Xuan Kong Liu Fa on Mount Jiuhua, Tan Yang Wu realized that Qing Nang Ao Yu is not scrambled at all — it is a literal, word-for-word lookup table of Najia (納甲) Trigram Attribution coupled with Trigram Line Transformation (抽爻換象)!

3. The First Key: Han Dynasty Najia (納甲) & the Eight Trigram Families

To essential Qing Nang Ao Yu, you must first master Najia (納甲 — Stem and Branch Trigram Absorption), formulated by the Han dynasty I Ching sage Jing Fang (京房, 77–37 BCE) and astronomically grounded in the waxing and waning phases of the Moon against the Sun in Wei Boyang’s Zhouyi Cantong Qi (周易參同契).

Why do the Eight Trigrams “absorb” specific Heavenly Stems and Earthly Branches? Because in lunar astronomy, each trigram represents a phase of the lunar month showing where the Moon rises and sets across the compass horizon:

• Day 3 Crescent Moon (Shuo): Appears in the West-Southwest at evening → Zhen ☳ absorbs Geng (庚) [and Wood triad Hai–Mao–Wei].
• Day 8 First Quarter Moon (Shang Xuan): Appears in the South at evening → Dui ☱ absorbs Ding (丁) [and Metal/Ox triad Si–You–Chou].
• Day 15 Full Moon (Wang): Rises in the East at sunset as a full Yang disk → Qian ☰ absorbs Jia (甲) and Ren (壬).
• Day 16 Waning Gibbous: Begins to wane in the Southeast at dawn → Xun ☴ absorbs Xin (辛) / Chen–Hai.
• Day 23 Last Quarter (Xia Xuan): Disappears in the Northeast/South → Gen ☶ absorbs Bing (丙) [and Xin in Yang Gong’s triad].
• Day 30 New Moon (Hui): Completely dark Yin disk in the East/North → Kun ☷ absorbs Yi (乙) and Gui/Ren (癸/壬)!

Look at how the 24 Mountains group into the Eight Trigram Najia Families (八卦納甲統二十四山) in Yang Gong’s classical system:

Part A: The 4 Famous Verse Triads of Qing Nang Ao Yu Part B: Complete 8-Trigram Najia Attribution of All 24 Mountains

4. The Second Key: Trigram Line Transformation (Chou Yao Huan Xiang 抽爻換象)

Now that we know how a trigram distributes its star to its Najia mountains, how does a trigram acquire its Nine-Star identity in the first place? Through Binary Line Transformation (爻變 / 抽爻換象, Yao Bian / Chou Yao Huan Xiang) between the Governing Trigram of the Period (Dang Yun Gua 當運之卦) and each of the Eight Trigrams!

Recall the universal binary transformation rule of the Eight Trigrams (used across both Eight Mansions Du Nien and Xuan Kong Liu Fa Ai Xing):

1. Unchanged Base Trigram (0 Lines Changed — Ben Gua 本卦): Generates Zuo Fu (#8 Left Assistant) & You Bi (#9 Right Assistant) — the governing Emperor/Empress star of the Period itself!
2. Flipping ONLY the Top Line (Line 3 — Shang Yao Bian 上爻變): Generates Tan Lang (#1 Greedy Wolf · Vital Qi / Sheng Qi).
3. Flipping the Middle & Top Lines (Lines 2 & 3 — Zhong Shang Er Yao Bian): Generates Wu Qu (#6 Martial Tune · Yan Nian / Longevity & Authority).
4. Flipping the Bottom & Top Lines (Lines 1 & 3 — Chu Shang Er Yao Bian): Generates Ju Men (#2 Great Gate · Tian Yi / Heavenly Doctor & Wealth).
5. Flipping ONLY the Middle Line (Line 2 — Zhong Yao Bian 中爻變): Generates Wen Qu (#4 Literary Tune · Liu Sha).
6. Flipping ONLY the Bottom Line (Line 1 — Chu Yao Bian 初爻變): Generates Lu Cun (#3 Salary Preserver · Huo Hai).
7. Flipping the Bottom & Middle Lines (Lines 1 & 2 — Chu Zhong Er Yao Bian): Generates Lian Zhen (#5 Chaste Fire · Wu Gui).
8. Flipping ALL THREE Lines (Lines 1, 2 & 3 — San Yao Quan Bian 三爻全變): Generates Po Jun (#7 Army Breaker · Jue Ming).

Let us test this binary computer on Period 9 (Governed by Li Fire ☲ [Yang–Yin–Yang] in Later Heaven, and Qian ☰ [Yang–Yang–Yang] in Early Heaven)! When the Period 9 governing trigram Li ☲ (Bottom Yang, Middle Yin, Top Yang) transforms across the eight trigrams:

• 0 Lines Flipped → Li ☲ (South, #9): Yields Fu Bi (#8/#9 Timely Ruler Star) — Supreme Period 9 Direct Spirit!
• Top Line (Line 3) Flipped → Zhen ☳ (East, #3 [Yang–Yin–Yin]): Yields Tan Lang (#1 Greedy Wolf)!
• Middle & Top Lines (Lines 2 & 3) Flipped → Kan ☵ (North, #1 [Yin–Yang–Yin]): Yields Wu Qu (#6 Martial Tune) — Notice how North Kan 1 (Primary Period 9 Ling Shen Water) receives the supreme auspicious Wu Qu #6 star!
• Bottom & Top Lines (Lines 1 & 3) Flipped → Gen ☶ (Northeast, #8 [Yin–Yin–Yang]): Yields Ju Men (#2 Great Gate)!
• Middle Line (Line 2) Flipped → Qian ☰ (Northwest, #6 [Yang–Yang–Yang]): Yields Wen Qu (#4 Literary Star) (while Qian ☰ is simultaneously the Early Heaven Body of South Li 9!).
• Bottom Line (Line 1) Flipped → Xun ☴ (Southeast, #4 [Yin–Yang–Yang]): Yields Lu Cun (#3) in direct line flip, while uniting with Li 9 via the 4–9 He Tu Metal Lock!
• Bottom & Middle Lines (Lines 1 & 2) Flipped → Dui ☱ (West, #7 [Yang–Yang–Yin]): Yields Lian Zhen (#5).
• All Three Lines (Lines 1, 2 & 3) Flipped → Kun ☷ (Southwest, #2 [Yin–Yin–Yin]): Yields Po Jun (#7).

5. Character & Five-Element Temperament of the Nine Northern Dipper Stars

Before you consult the 24-Mountain lookup tables, you must know the personality of each of the Nine Northern Dipper Stars (北斗九星) in Xuan Kong Liu Fa. Why? Because in Liu Fa, every star carries both an Innate Five-Element Temperament (Ben Xing 本性) and a Temporal Qi State (Timely Wang 旺, Future Sheng 生, Retreating Tui 退, or Dead Si 死):

• Star #1 — Tan Lang (貪狼星 · Greedy Wolf · Kan Water / Yang Wood): The #1 Supreme Auspicious Star of vitality, scholarly brilliance, noble offspring, and pioneering wealth. In Period 9, #1 is both the Primary Ling Shen Water Star and the Upcoming Future Cycle Star (2044).
• Star #2 — Ju Men (巨門星 · Great Gate · Kun Earth): The #2 Supreme Auspicious Star of landed estates, medical healing, institutional stability, and steady cash accumulation. When timely or generated by Lines 1 & 3 transformation, Ju Men builds dynastic family assets.
• Star #3 — Lu Cun (祿存星 · Salary Preserver · Zhen Wood): Innately fierce and argumentative when untimely, yet capable of rapid military or competitive breakthroughs when aligned with Lower Cycle Ling Shen water.
• Star #4 — Wen Qu (文曲星 · Literary Tune · Xun Wood): Governs academic honors, artistic eloquence, software/media, and romance when timely (especially in Period 9 via the 4–9 He Tu alliance!), but causes peach-blossom scandals or respiratory/wind ailments when inverted.
• Star #5 — Lian Zhen (廉貞星 · Chaste Fire · Central Palace): The Supreme Polarity (Huang Ji) fierce star. Never place disturbing renovations on an untimely #5 mountain.
• Star #6 — Wu Qu (武曲星 · Martial Tune · Qian Metal): The #3 Supreme Auspicious Star of executive command, corporate leadership, legal authority, and metallic finance.
• Star #7 — Po Jun (破軍星 · Army Breaker · Dui Metal): A fierce star of surgical decisiveness, litigation, and sudden upheaval when untimely; requires strict placement according to its cycle polarity.
• Stars #8 & #9 — Zuo Fu (左輔 · Gen Earth) & You Bi (右弼 · Li Fire): The Twin Imperial Assistants. In Period 8 (2001–2024), Zuo Fu #8 reigned; in Period 9 (2024–2043), You Bi #9 (Li Fire) reigns as the Supreme Emperor Star!

6. Complete 24-Mountain Ai Xing Lookup Matrix for Period 8 & Period 9

Here is the master clinical reference table you will use on every site audit. Table 1 synthesizes all 24 Mountains across the 8 Palaces, showing each mountain’s compass degree, Najia trigram root, Period 8 Ai Xing Star, Period 9 Ai Xing Star, and exact Period 9 Mountain vs. Water field application:

7. Combining Ai Xing with Golden Dragon: Mountain Stars vs. Water Stars

Study Table 1 closely and you will discover the crown jewel of clinical Period 9 design. Why do certain 15° mountains within a 45° palace outperform their neighbors by three hundred percent? Because Najia cross-pollinates the 8 Palaces!

Look at four extraordinary “Golden Combinations” in Period 9 revealed by Table 1:

1. Sitting Wu (午 180° South) Facing Zi (子 0° North) — Or Sitting Bing (丙 165°) Facing Ren (壬 345°): The sitting mountain Wu is both the Primary Period 9 Zheng Shen (Mountain) AND carries the #9 You Bi Emperor Star (while Bing carries #2 Ju Men); meanwhile, the facing water mouth Zi is both the Primary Period 9 Ling Shen (Water) AND carries the #6 Wu Qu Authority Star!
2. Sitting Xu (戌 300° Northwest) Facing Chen (辰 120° Southeast): Why is Sitting Xu Facing Chen my favorite commercial headquarters alignment for Period 9? Because Xu (戌) belongs to the Li ☲ (Yin–Wu–Xu) Fire Triad, meaning it pulls the #9 You Bi Emperor Star directly into the Northwest Zheng Shen Mountain seat! Simultaneously, its 180° facing palace Chen (辰) belongs to the Kan ☵ (Shen–Zi–Chen) Water Triad inside the Southeast 4–9 He Tu Ling Shen palace, pulling the #6 Wu Qu Wealth Star directly into the front water mouth!
3. Sitting Yin (寅 60° Northeast) Facing Shen (申 240° Southwest): Yin (寅) also belongs to the Li ☲ (Yin–Wu–Xu) Fire Triad, anchoring the #9 You Bi Emperor Star on the solid Northeast Mountain seat, while Shen (申) belongs to the Kan ☵ (Shen–Zi–Chen) Water Triad, placing the #6 Wu Qu Star right at the Southwest Ling Shen water mouth!
4. Sitting Hai (亥 330° Northwest) Facing Si (巳 150° Southeast) — Or Sitting Geng (庚 255° West) Facing Jia (甲 75° East): Both Hai and Geng belong to the Zhen ☳ Najia family, pulling the #1 Tan Lang Vital Qi Star onto a solid Lower Cycle Mountain seat!

8. Environmental Science: Geomagnetic Declination, Solar Azimuth & 15° Sectors

Why did classical geomancers subdivide each 45° palace into three 15° sub-sectors (the 24 Mountains) rather than treating all of “South” or “East” as uniform? Because a 15° azimuth shift corresponds to exactly one hour of Earth’s solar rotation (360° ÷ 24 hours = 15° per hour) and dramatically alters solar heat gain, prevailing wind incidence, and geomagnetic induction!

• Solar Azimuth & Thermal Radiation Across 15° Sub-Sectors: Take the Due West palace (Dui 7: 247.5°–292.5°). A façade angled at Geng (247.5°–262.5° WSW) receives peak low-angle summer afternoon solar radiation in the tropics vs. a façade angled at Xin (277.5°–292.5° WNW). Similarly, in the Due East palace (Zhen 3), Jia (67.5°–82.5° ENE) and Mao (82.5°–97.5° E) capture gentle morning UVA/visible spectrum light (300–500 lux at 7:00–9:00 AM) that entrains human suprachiasmatic nucleus (SCN) melatonin-cortisol rhythms without overheating the building envelope.
• Magnetic North vs. True Solar North & Steel Interference: When measuring the 24 Mountains for Ai Xing, a 3° error near a 15° mountain border will flip your reading from Zi (0° — #6 Wu Qu in Period 9) to Ren (345° — #9/#7) or trigger a Small Void Line (Xiao Kong Wang)! Reinforced concrete rebar, steel door frames, and underground high-voltage cables in modern cities routinely deflect a physical magnetic needle by 4° to 12°. That is why I always require students to cross-verify their physical Luo Pan reading standing 5 meters clear of the building against satellite azimuth geometry in Luo Pan Pro.

✓ Pure 15° Mountain Lock (Center 9° Safe Zone) ✗ Boundary Void Lines (Major Void 大空亡 & Minor Void 小空亡)

9. 2026 (Bing Wu) & 2027 (Ding Wei) Annual Star Overlays on 24 Mountains

10. Two Real-World Architectural Case Studies from Field Audits

How does a 15° shift inside the exact same 45° palace change a family’s fortune? Here are two real cases from my field logs:

11. Five Common Misconceptions & Comparison Across 4 Ai Xing Systems

Keep these five critical distinctions clear in your practice:

1. Misconception 1 — “Ai Xing is the same thing as Flying Stars (Fei Xing)”: Flying Stars marches Lo Shu numbers 1–9 around a 3×3 grid; Liu Fa Ai Xing transforms binary trigram lines (Chou Yao) and distributes the Nine Stars to the 24 Mountains via Najia.
2. Misconception 2 — “An auspicious Ai Xing star allows you to put water in a Zheng Shen Mountain sector”: Never! Macro Golden Dragon polarity comes first. Even though Wu (South 180°) and Xu (NW 300°) carry the #9 Emperor Star in Period 9, they sit inside Zheng Shen Mountain palaces — they must be activated by solid elevation, buildings, beds, or desks, never by deep pools!
3. Misconception 3 — “Najia is only used in San He (Three Harmony) Feng Shui”: Patriarch Yang Yun Song’s Qing Nang Ao Yu and Tian Yu Jing are the foundational texts of Xuan Kong, and both explicitly use Najia triads (Kun Ren Yi, Gen Bing Xin, Xun Chen Hai). Najia is the bridge uniting Form, San He, and Xuan Kong.
4. Misconception 4 — “All three mountains inside a 45° palace have the same star”: As Table 1 proves, the three 15° mountains inside a single 45° palace belong to different Najia trigram families and therefore carry completely different Ai Xing stars!
5. Misconception 5 — “You can read a 24-Mountain Ai Xing degree with a smartphone compass app”: Smartphone magnetometers suffer from up to 15° of indoor hard-iron distortion. Always use a calibrated Luo Pan combined with satellite True/Magnetic azimuth verification on Luo Pan Pro.

12. Frequently Asked Questions (FAQ) & Classical Bibliography

1. What is the fundamental difference between Liu Fa Ai Xing and Flying Star Feng Shui?

Flying Star (Fei Xing) places Lo Shu numbers 1–9 into a 3×3 grid and flies them forward or backward along the Lo Shu path. Xuan Kong Liu Fa Ai Xing derives the Nine Stars by flipping the binary lines (Chou Yao Huan Xiang) between the Period Trigram and the Eight Trigrams, and distributes those stars to the 24 Mountains via Najia (納甲) trigram kinship — directly matching Yang Yun Song’s Qing Nang Ao Yu.

2. Why does Qing Nang Ao Yu group Kun, Ren, and Yi together under Ju Men (#2)?

Because in Han dynasty Najia I Ching theory, the Earth Mother trigram Kun ☷ absorbs the Heavenly Stems Yi (乙) and Ren (壬). Therefore, Kun (225° SW), Ren (345° N), and Yi (105° E) share the exact same Kun ☷ trigram bloodline and receive the same Ai Xing star across every period.

3. Which 15° mountains are the best for placing Water or a Main Gate in Period 9 (2024–2043)?

Water and main gates must sit inside the four Lower Cycle Ling Shen (Water) palaces (North 1, Southwest 2, East 3, Southeast 4) on mountains carrying auspicious Ai Xing stars: Zi (0° N · #6 Wu Qu), Gui (15° N · #6 Wu Qu), Ren (345° N · #9 You Bi), Chen (120° SE · #6 Wu Qu + 4–9 He Tu), Mao (90° E · #1 Tan Lang), Jia (75° E · #4/#1), Wei (210° SW · #1 Tan Lang), and Shen (240° SW · #6 Wu Qu).

4. Which 15° mountains are the best for the Sitting Backing (Mountain / Bed / Desk) in Period 9?

Solid backing, beds, and executive desks belong in the four Lower Cycle Zheng Shen (Mountain) palaces (South 9, Northeast 8, West 7, Northwest 6) on mountains carrying auspicious Ai Xing stars: Wu (180° S · #9 You Bi Emperor), Bing (165° S · #2 Ju Men), Xu (300° NW · #9 You Bi), Hai (330° NW · #1 Tan Lang), Yin (60° NE · #9 You Bi), Gen (45° NE · #2 Ju Men), Geng (255° W · #1 Tan Lang), and Xin (285° W · #2 Ju Men).

5. Why is “Sitting Xu (300° NW) Facing Chen (120° SE)” considered a golden alignment in Period 9?

Because Xu (300° NW) sits in the Qian 6 Zheng Shen Mountain palace AND belongs to the Li ☲ (Yin–Wu–Xu) Najia triad, pulling the #9 You Bi Emperor Star onto the sitting mountain; meanwhile, its 180° opposite facing mountain Chen (120° SE) sits in the Xun 4 Ling Shen Water palace (forming the 4–9 He Tu lock with Period 9) AND belongs to the Kan ☵ (Shen–Zi–Chen) Najia triad, pulling the #6 Wu Qu Wealth Star right to the front door!

6. What happens if a door center falls on a Major Void Line (22.5°, 67.5°, etc.) or Minor Void Line?

Falling on a Major Void Line (Da Kong Wang) splits the door between two different 45° palaces (often mixing Mountain and Water polarities); falling on a Minor Void Line (Xiao Kong Wang) splits the door between two 15° mountains of different Najia families. Both cause unstable cash flow, neurological stress, and confused decision-making. Always angle the door frame into the central 9° safe zone of a single pure mountain.

Classical Sources & Scientific References

1. Yang Yun Song (楊筠松, Tang Dynasty), Qing Nang Ao Yu (青囊奧語) & Tian Yu Jing (天玉經).
2. Zeng Qiu Ji (曾求己, Tang Dynasty), Qing Nang Xu (青囊序).
3. Jing Fang (京房, Han Dynasty), Jingshi Yizhuan (京氏易傳 · Jing Fang’s Commentary on the Changes — Eight-Palace Line Transformation & Najia).
4. Wei Boyang (魏伯陽, Eastern Han), Zhouyi Cantong Qi (周易參同契 — Lunar Phase Najia Astronomy).
5. Jiang Da Hong (蔣大鴻, Qing Dynasty), Di Li Bian Zheng (地理辨正).
6. Tan Yang Wu (談養吾, 1929), Xuan Kong Ben Yi (玄空本義 · Original Meaning of Xuan Kong), Shanghai.