Qi Men Dun Jia: Grand Compendium · Volume 2 Study Materials

I. General Principle: An Interpretive Rendering of the Mysterious Secrets of Qi Men (Qi Men Miao Mi Fu)

🔥 The mysteries of the forward and reverse movements of Yin and Yang are limitless: The Winter Solstice and Summer Solstice, as the two extremes [of the year], cause the cyclical numbers to return to the Luo River Writing's Nine Palaces. If one can thoroughly comprehend the principles of Yin and Yang transformation, the myriad phenomena of heaven and earth can be condensed within the span of a single palm. The transformations of the Three Powers (Heaven, Earth, Human) give rise to the Upper, Middle, and Lower Yuan; the Eight Trigrams give rise to the Eight Dun Men (Hidden Doors).

"Dun" (遁) means "to conceal" (隐). The Six Jia are hidden beneath the Six Yi, hence the term "Dun Jia" (Escaping/Concealing Jia). Using the numbers of the sacred tortoise and the Luo River Writing to discuss the directions associated with the Eight Trigrams: Left 3, Right 7; 9 on the head, 1 on the feet; 2 and 4 as shoulders; 6 and 8 as feet; 5 resides in the center to fill the abdomen. The Central Palace is lodged within the Kun Palace, embodying the principle in the Book of Changes of Kun representing the Mother. Now, inferring the doors generated by the Eight Trigrams, hence the name "Eight Dun Doors."

The Nine Stars (Xing Fu / Star Talisman) move according to the Hour Stem, while the Eight Doors (Zhi Shi / Suitable Envoy) closely follow the Zhi Fu (Value Talisman). The Xing Fu refers to the Nine Stars; the Zhi Shi refers to the Eight Doors; Tian Yi refers to the Zhi Fu. The Hour Stem refers to Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui. In a forward (Yang) sequence, they're arranged as One, Two, Three, Four, Five, Six, Seven, Eight, Nine; in reverse, as Nine, Eight, Seven, Six, Five, Four, Three, Two, One.

For urgent matters, rely on the Deities (Shen); for non-urgent matters, rely on the Doors (Men); advance toward the Three [Auspicious Doors] and avoid the Five [Inauspicious Doors] – thus Heaven's Way naturally favors you. If a matter is urgent and no auspicious Qin Men configuration is available, employ the "Jade Maiden Reverses Closure" technique to arrange the Six Yi and proceed, this being the method of divine mechanism (involving the spirits). If circumstances permit leisure, one must go out through an auspicious gate. The classic says: Advance toward the Three auspicious gates and avoid the Five inauspicious gates, one can dwell indeed in safety. If using the divine mechanism method, what is inauspicious may turn auspicious; this is Heaven's advantageous arrangement. If one obtains the Yi Qi and also encounters auspicious gates, recite the incantations for Yi Qi and similar, proceeding from that direction ensures myriad affairs become truely auspicious.

Tian Fu, Tian Chong, Tian Ren, Tian Qin, and Tian Xin are auspicious stars; Tian Peng, Tian Ying, Tian Rui, and Tian Zhu are ominous stars. Among these, when [that hour's sky star] is Fu, Qin, or Xin, it is considered Great Auspicious; Ren and Zhong indicate Minor Auspicious; Peng and Shui being the stars indicating greater danger whereas Ying stands good chances! If auspicious stars happen not to match a useful configuration concerning specific temples forming opening doors pathways respective according their standard positions--their employment nonetheless remains fitting selections remains usage adequate to those certain ends posited toward avoiding hazards at least finding helpful provisions now regardless corresponding inability meeting inquisition conditions demand final assessment safety--in worst find broad consolation still enabling beneficial conduct cautiously plus further. When encountering an auspicious formation (*Qi *) from positions within directions corresponding harms inherent one shall vocally invoke their specific title before passing onward: thus, the one destined similarly facing Tian Pf eng announce e.g., 'Son/ZĂ), accordingly hence..."

Adding one Yin star to the first pal Cong constitutes "Bi" (Open/internal Principle/opening portal), while one Yang star added constitutes "Kai"(opening). The first palace marks do honor endings respectively delineating substantial fundamentals across chi actual states producing results assessing benefit orientation: consultations finding 'opens' provides welcome signs—prognosis: auspicious. That unfitting event avoid risky. Long-distance messages/re unfamiliar, positions noting his where itinerary one possible line standing later unavailable manner contrary upon results ('en' carries those indications!)...

The fourfold Heavenly Net (Tian Wang Si Zhang) provides no path of escape; the forward and reverse conformations of Yin Yang yield inexhaustibly wonders. The name 'Tian Wang' names recurrence merely due that 'net(Heaven web method assignment this varies notably within spatial corresponding only too since positions mentioned open measures simply position need specific term equivalence condition defines existence specified case where this writing attribute —called thoroughly in structure has once used point observation relevant instructions strict methods various existing authoritative authors never leave involved passing current segment separate category implement decisions when seeking references in-depth deeper meanings scholarly principal completeness due context existing remain analysis surrounding segment application corresponding avoid trap hidden pitfalls commonly unnecessary wander zones thus content conclusion preserving as basic high-yield data previously unreveiled correct choice option contextual simple practical alignment actually while acceptable within general course practice not requisite infer modified outside also suitable eventually those conscious wide detail professional recommendations eventually thereby final encompassing established custom final intention ideal reflection should thorough maintain simple visible major frame information corresponding proper interpretation selected canonical resources thereby closing processing around sequence thought aligning suitably present location simple accepted assertion mentioned beyond required absolute since preserving properly enough details needing text entirely primarily broad audiences often insufficient handling across novice progressing steady complexities achieved confidence further from ease.) Practical condition 'form six Gui that means unless recognized familiar known... Way high multiple, lower be sufficiently whether obtaining implementation so depending structures must check time including cases use verifying start proceed assess contextual pathways official, documentation cited indicates he falls middle passage implies never guaranteed comfortable (since noted substantial) essential one person positioning feasible close escape while bearing noted mention practice sets upper course point selected solution adequately matching proper instruction overall primarily noted according chapter frame aforementioned thus record consulted further as contains target under segment chapter cover broad teaching pattern early readers among general practitioners whose significant degree usage verified resulting systems generally follow context interpretations varying available specialty additions beyond stated stand basis eventually realizing intent prior statement supported noted simplified popular laypersons acquire concise logic relevant perhaps unnecessary insertion all rare explicit those mastering need access.

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II. System of Fundamental Components

Positioning of the Nine Stars

The Tian Qin Star is lodged in the Kun palace irrespective of Yang or Yin Dun; another tradition holds it lodges in Kun during Yang Dun and in Gen during Yin Dun.

Positioning of the Eight Doors

System of the Six Yi

Wu, Ji, Geng, Xin, Ren, Gui are the Six Yi. The Six Jia hide beneath these:

The System of the Eight Spirits

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| Order | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |---|---|---|---|---|---|---|---| | Yang Dun | Zhi Fu | Teng She | Tai Yin | Liu He | Gou Chen | Zhu Que | Jiu Di | Jiu Tian | | Yin Dun | Zhi Fu | Jiu Tian | Jiu Di | Zhu Que | Gou Chen | Liu He | Tai Yin | Teng She |

Beneath Zhu Que there is Xuan Wu; beneath Gou Chen there is Bai Hu.

After the Azure Dragon, in sequence: Bright Hall, Heavenly Punishment, Vermilion Bird, Golden Treasury, Heavenly Virtue, White Tiger, Jade Hall, Heavenly Prison, Dark Warrior, Director of Destiny, and Hooked Chen.

Virtue and Punishment

Treasure, Harmony, Righteousness, Control, and Submission

Calendar scholars call "Harmony Days" as "Exclusive Days," and "Submission Days" as "Attack Days."

Five Yang Hours and Five Yin Hours

Five Yang Hours (Jia, Yi, Bing, Ding, Wu): Favor the guest in military affairs; appropriate to strike first. All undertakings—dispatching troops for conquest, long journeys seeking wealth, establishing states and cities, securing altars of state, governing the people, undertaking martial affairs, entering officialdom to meet superiors, moving residences, and marriage—are auspicious, except that fleeing fugitives are difficult to apprehend. The classic says: "Acting in yang is advantageous for the guest, for yang stems receive the generative qi of the east; in yang hours, qi ascends."

Five Yin Hours (Ji, Geng, Xin, Ren, Gui): Favor the host in military affairs; appropriate to respond from behind. The above-mentioned undertakings are all inauspicious, except that fugitives may be captured. The classic says: "Acting in yin is advantageous for the host, for yin stems receive the killing qi of the west."

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7. What the Eight Gates Govern

Key Point: The Eight Gates most fear coercion and restraint. An auspicious gate with qi becomes more auspicious; without qi, its auspiciousness diminishes. An inauspicious gate with qi becomes more inauspicious; without qi, its inauspiciousness diminishes.

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8. What the Nine Stars Govern

Key Point: When the Nine Stars have qi and align with the Marvelous Gates, the auspicious become more auspicious, and the inauspicious become less inauspicious. If they lack qi and do not align with the Marvelous Gates, the inauspicious become more inauspicious, and the auspicious cease to be auspicious.

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9. Joy and Anger of the Three Marvels

Yi Marvel (Sun Marvel) Arriving at Each Palace

Bing Marvel (Moon Marvel) Arriving at Each Palace

Ding Marvel (Star Marvel) Arriving at Each Palace

Among the Three Marvels, the Star Marvel (Ding) is the most efficacious.

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10. Trigram Categories of Spirits

Kan Palace 🌊

Northern roads, boat journeys, black color, salty taste, paste, water paste, ropes, musical instruments, diarrhea, seminal emission, ear-kidney-lumbar ailments, deep listening and strategic wisdom, circuitous affairs and complications.

Kun Palace

City gods, directors of destiny, earth altars, grain and silk, fields, granaries, clouds and fog, sand and stone, elderly women, Daoist nuns, spleen-stomach ailments, abdominal disorders, rural farmers, brawls, brooding thoughts, prisons, talismans and medicines in pill and powder form, medicine and divination.

Zhen Palace 🌱

Jia-Yi Azure Dragon, forbidden courts, inner court scholars, boats and ships, chariots and horses, Mount Tai, temples and shrines, household spirits and forest foothills, monsters and goblins, liver-gallbladder ailments, four limbs, eldest son, worries and joys, hunting excursions, majestic reputation, handsome and imposing appearance, scallions and vegetables, melons and greens, rank and acrid tastes, fine workmanship and carving, clouds and dragons, anomalies and marvels.

Xun Palace 🌬

Mountain forests, bamboo dwellings, advance and retreat, concealment, hanging and suspension, pillars, ropes, binding and wrapping, fine artifice, mechanisms, bends and curves, long streets and new brides, refined scholars, secluded leisure, absolute cessation of smoke, temples, thighs and arms, hands and feet, wind-cold ailments, qi disorders, gallbladder and liver, eyes and vision.

Qian Palace

Sovereign and father, eminent officials, monks and Daoists, the elderly, precious stones, bronze, iron, metal and stone, silk strings, white color and round form, hard bodies and pungent taste, chopping blocks and anvils, hammers and bells, bones and brain, sinews and thighs.

Dui Palace

Damage and destruction, ruin and fracture, disasters and tribulations of yin people, young women, concubines, throat and mouth, verbal contention, malevolent heterodoxy, deceitful words and false fabrications, broken ground, abandoned wells, needles, awls, copper and iron.

Gen Palace ⛰

Young men, hills and ridges, paths and roads, stone banks, earth and stone, tiles and blocks, mountain villages, temples and abbeys, movement and stillness never fixed, hard and multi-jointed, nose, back, fingers, accumulations of qi and blood, yellow color and sweet taste, advance and retreat, life and death, back carbuncles, hand and foot sores, tiger-leopard-wolf-rat-dog creatures.

Li Palace 🔥

Sages and divinities, public icons, lightning, star fire, red crows, cinnabar phoenixes, fire stoves, chimneys, lanterns, red boxes, wine and food, fragrance and aroma, roasting and baking medicines, things with shells consumed whole, dry heating nature, urgency, fumigation and steaming, ancestors, ancestral temples, bright halls, receiving rooms, furnaces and tripods, fire implements, poetry and rhapsodies, lyrics and essays, eyes and vision, cardiac blood flushes and fevers, unwarranted alarm.

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11. Nine Stars Category Spirits

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12. Eight Spirits Category

Direct Talisman

Embodies the central earth, occupying the position of nobility, capable of nourishing all things. By nature lofty in character and deep and weighty; a celestial immortal or Buddha; worthy of honor and reverence; when deprived of command, becomes a marriage broker or matchmaker. Concerning objects: seals and documents, gold and silver ornaments, silk and hemp fabrics, precious treasures, grain, turtles, xiezhi oxen. When transformed: becomes the essence of water and wood, monsters of scale and fish. When flourishing and prosperous: brings glorious celebrations, imperial edicts, banquets, wine and food; when resting and declining: brings weeping, sorrow, and melancholy. Color yellow-white, form upright and square, number eight.

Hanging Serpent

Embodies the fire of the south, a spirit of depletion and loss. By nature cunning and hypocritical; a minor official or a woman; when deprived of command: a marketplace dweller, servant girl, old matchmaker. Concerning objects: things bright and shiny, ugly and misshapen, slanted, broken, pear-blossom wood, ropes, serpents. When obtaining the Marvel and the Gate, it brings no harm; when transformed: becomes strange lights, fires, startling disturbances, lingering entanglements, nightmares, blood disasters, deceptions, curses, filth, stench. Color red-white, form illusory, twisted and crooked, number three.

Grand Yin

Embodies the metal of the west, a spirit of concealed protection capable of bringing auspicious blessings. Pure-hearted, upright and selfless, disposition hard to restrain. Ascends observatories and remonstrance offices; a man of letters; when deprived of command: becomes concubines and petty influences. Concerning objects: carving and engraving, gold and silver, feathers, that which is pure and clean, overcast skies, dew and rain, frost and snow, ice and freezing, Buddhist temples, handwriting and calligraphy. When flourishing: brings celebrations, amnesties, pardon and grace, marriage and childbirth; when resting: brings licentious excess, anxiety, deception, privacy, verbal disputes, curses, weeping, secret schemes, private pacts, adultery, fugitive flight. Color white, form pliant, number nine.

Six Harmonies

Embodies the wood of the east, guardian god of the Thunder Ministry and Rain Master, capable of soaring transformation. Character favors the worthy and delights in goodness; a noble figure, lofty recluse; when deprived of command: becomes craftsmen, artisans, monks, Daoists, magicians, physicians, book traders. Concerning objects: fruits, salt and grain, feathers, cloth and silk, garments, palanquins and umbrellas, decorated processional banners, seals and tallies, documents and contracts, tree branches, boats and chariots, money and wealth. Transformed: becomes the essence of grass and trees, spirits of aquatic creatures. When flourishing: brings emoluments, honors, weddings, congruous unions, childbirth; when resting: brings wanton women, disputes, quarrels over wealth bringing illness, imprisonment, cowardice, slander, collusion, surrender, luring. Color yellow-red, form radiant, numbers six and seven.

Hooked Chen (with White Tiger Below)

Embodies the metal of the west, a spirit of fierce valor, governing warfare and combat. Character fierce and awe-inspiring and commanding; a powerful officer, envoy, bodyguard, courageous warrior; when deprived of command: becomes a common soldier, ugly woman, craftsman, farmer, shepherd boy, constable, butcher, violent criminal, mourner, sick person. Concerning objects: gold and silver, blades and swords, wealth and goods, wood and fruit, fish and turtles, flood dragons; deprived of command: becomes rotten iron, tiles and stones, nets and snares. Transformed: becomes hail, violent winds, sudden thunder, and things that injure. In affairs: litigation, illness, death, roads, fall injuries, lingering detention, loss. Color blue-white, form sharp, numbers seven and five.

Vermilion Bird (with Dark Warrior Below)

Embodies the water of the north, a spirit of punishment and treacherous slander. Character intelligent yet impetuous, eloquent yet fickle; a man of letters, drunkard, pregnant woman; deprived of command: becomes a meddlesome mediator, clerk, thief, adulterous woman, salt-and-fish seller. Concerning objects: writings, documents, edicts, garments, fish and serpents, eggs, salt and pickle, oil and wine, umbrella and charcoal implements. Transformed: becomes demons, prodigies and specters. When flourishing: audiences with officials, prayer and hope; deprived of command: verbal disputes, weeping and crying, dreams, separation, panic and alarm, loss, fugitives, villainy and flattery. Color red-black, form ruptured, numbers four and nine.

Nine Earths

The image of Kun above, mother of the ten thousand things, a spirit of obscurity and shadow. Character pliant and compliant yet parsimonious; a human appearance, large belly, a healer-diviner, an old woman, a Daoist nun, rural farmer, jailer. Concerning objects: cow and calf, the five grains, cloth and silk, metal, sand, stone, clouds, things, talismanic texts, medicines and herbs, old objects. In affairs: the indistinct and vague, worried reflection, illness, prisons, the hidden and dim, weeping, death and mourning. Color black, form thick with a handle, numbers eight and two.

Nine Heavens

Qian metal's image, father of the ten thousand things, a spir of manifestation and exaltation. Character firm and active yet unfathomable; the ruler and father, official and elder, monk and Daoist, venerable elder, head and brain, thighs and ribs. Concerning objects: horses, gold and jade, precious stones, swords and halberds, chopping blocks and anvils, hammers and bells, coins and mirrors, frozen ice, bronze and iron, fruit, strings and bamboo, lustrous brightness, exquisitely intricate, revolving and mobile—things with sound and feet. In affairs: planning, pursuing game, longevity journeys. Color red-white, round in form and solid in substance, numbers one and six.

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🧠 Deep Understanding

Core Concept 💡

The core of "The Secret Ode of Qimen Dunjia" lies in constructing a spatiotemporal holographic model: using the Nine Palaces of Luoshu as the base map, it superimposes four layers of systems—the Nine Stars (heaven), Eight Gates (human), Eight Spirits (divine), and Three Wonders and Six Instruments (earth)—onto the same spatiotemporal coordinates. Through the forward and reverse dispersal of Yin and Yang Dun, it simulates the flow of cosmic vital energy. Its fundamental logic is:

1. Yin and Yang as the guiding principle: After the winter solstice, Yang qi arises and Yang Dun is used; after the summer solstice, Yin qi arises and Yin Dun is used. All arrangement rules are demarcated by this boundary.
2. Dunjia as the methodology: The Six Jia are concealed beneath the Six Instruments, using "concealment" as "manifestation," embodying the strategic thinking of subduing movement with stillness.
3. Correspondence between time and position: The Value Star follows the Heavenly Stem of the hour, and the Value Envoy follows the Earthly Branch of the hour. Each shichen (two-hour period) possesses a unique combination of stars, gates, spirits, and instruments, forming a precise spatiotemporal coordinate system.
4. Assessment of qi and numbers: The Nine Stars and Eight Gates each have Five Element attributes and tendencies toward auspiciousness or inauspiciousness. Their generative and controlling relationships with the Five Elements of the palace positions constitute the basis for determining whether the "qi is present or absent."

Modern Interpretation 🌟

From a modern perspective, the essence of Qimen Dunjia is an ancient decision support system. Its value lies not in mystical powers but in providing a structured analytical framework:

• Systematic thinking: It examines problems comprehensively across four dimensions—heaven (macro environment), earth (geographical conditions), human (human affairs), and spirit (uncontrollable factors)—sharing similarities with PEST analysis and SWOT models in modern management theory.
• Timing selection: Rules such as "five Yang hours favor the proactive side, five Yin hours favor the reactive side" are essentially refined management of action timing—distinguishing first-mover advantages from late-mover advantages, consistent with first-move/second-move thinking in modern game theory.
• Relativity of auspicious/inauspicious judgments: "An auspicious gate with qi increases auspiciousness; without qi, it diminishes. An inauspicious gate with qi increases inauspiciousness; without qi, it diminishes"—this emphasizes that good or bad fortune is not absolute but depends on whether conditions are present. This conditional thinking is highly rational.
• Metaphorical value of the class-spirit system: The Nine Star class-spirits associate celestial bodies with professions, directions, and physical phenomena, essentially representing an attempt at taxonomy, similar to early models of knowledge integration. The "appropriate" and "inappropriate" designations can be understood as empirical summaries of risk and benefit.

Practical Value ⚡

1. Reference for time selection: Modern people undertaking important matters (contract signing, interviews, business openings, relocations, etc.) can draw on the Five Yang/ Five Yin hour framework—strike proactively during Yang hours, defend and counter during Yin hours—incorporating the time dimension into decision-making.
2. Eight Gates as action categories: Kai (Open) Gate governs public initiative and expansion; Xiu (Rest) Gate governs recuperation and restoration; Sheng (Birth) Gate governs growth and development; Shang (Injury) Gate governs competition and acquisition; Du (Blockade) Gate governs secrecy and containment; Jing (Scenery) Gate governs publicity and display; Si (Death) Gate governs termination and closure; Jing (Startling) Gate governs risk response—this classification can be converted into categorical labels for modern action types.
3. Nine Stars as risk indicators: Warnings such as Tianpeng against flood and theft, Tianying against fire, Tianzhu favoring defense over attack are essentially early-warning checklists of risk factors for different action scenarios. Users may treat this as a hypothetical risk assessment framework, validating its practicality through a "hypothesis—action—review" methodology.
4. Insights from the Three Wonders arriving at palaces: The "pleasure and displeasure" states of the Yi, Bing, and Ding Wonders across different palaces reveals that: the same resource produces vastly different effects in different environments. Personal talents, business strategies, and investment plans all require matched environmental conditions to achieve optimal efficacy.

Philosophical Reflections 🤔

The deepest philosophical significance of Qimen Dunjia lies in the dialectical relationship between "concealment" and "manifestation." "Dun" means to hide—the Six Jia concealed beneath the Six Instruments, employing concealment as the method, retreating in order to advance. This resonates with Laozi's thought that "the greatest sound is silent, the greatest image is formless"—true power often does not manifest directly but lies潜伏 within structures.

The doctrine of "the fourfold heavenly net" reveals the objective existence of uncontrollable factors: when Liu Gui prevails, it is as if a heavenly net笼罩 over all; forcing action leads to entanglement and entrapment, leaving only "escape" as a viable path. This is not passive fatalism but rather a wise summation of "when the current cannot be opposed, one should flow with it." In reality, when systemic risk arrives, cutting losses and retreating is sometimes the only correct choice.

The concepts of "opening" and "closing" touch upon the closing and opening of opportunity windows: a Yin star added to a palace signifies "closure," while a Yang star added signifies "opening." Distant messengers and travelers arrive when it opens and fail to come when it closes—communication, opportunities, and information all have "window periods," and once missed, circumstances become entirely different. This is continuous with the Chinese cultural worldview of "time, destiny, and fortune."

Finally, the closing annotation's statement, "military opportunities are decided in an instant; there is absolutely no reason to consult annual or monthly calculations," articulates the boundaries of applicability for all divination systems: the more complex the system (such as year/month/day Qimen), the lower the practical application value may become; what truly functions in rapidly changing real-world scenarios is the most core and simplest principle. The implication for modern decision science is: simple models outperform complex systems in rapid decision-making.

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📚 Related Knowledge

Associated Concepts

• Luoshu Nine Palaces: The base model of Qimen Dunjia, with the numerical sequence "wearing nine at the top, one at the bottom, three on the left, seven on the right, two and four at the shoulders, six and eight at the feet," corresponding to the positions of the Later Heaven Bagua.
• Dunjia Principle: The Six Jia concealed beneath the Six Instruments, with the xun head as the overall commander, forming the "Chancellor-Envoy" system.
• Surpassing the Spirit, Receiving the Qi, and Intercalation: The calendrical correction methods for seasonal Ding in Shichen Qimen, also employed by year/month/day Qimen.
• Yunü Fanbi (Jade Maiden Reverse Seal): An emergency method used when no Qimen chart is calculable—a technique of divine mechanism.
• Fuyin (Recumbent Chant): Occurs when the Value Star rests upon its own palace and the Value Envoy upon its own branch, symbolizing matters remaining stationary or stagnant.
• Zibai Flying Stars: The yearly Zi Bai method, like Qimen, uses Yin Dun reverse flight, emphasizing the three auspicious stars—One White, Six White, and Eight White.

Further Reading

• The Song of the Smoke-Wave Old Fisherman (also known as the Fisherman's Song): The foundational rhymed verse of Qimen Dunjia, referred to in the closing annotation as the "ancestor," indicating its authoritative status.
• Qimen Dunjia Tongzong, Volume One: Basic theoretical content, including the Nine Palace arrangement and the origins of Yin and Yang Dun.
• Qimen Dunjia Tongzong, Volume Three and beyond: Various divination applications (heavenly phenomena, geography, human affairs, military strategies, etc.).
• Xieji Bianfang Shu: Contains systematic discussions on the Five Talismans of the day school and the Twelve Spirits (Qinglong, Mingtang, etc.), useful for reference.
• Taiyi Jinjing Shi Jing: One of the "Three Styles" alongside Qimen; its "one palace every three days" method can be compared with day-level Qimen.
• Liuren Daquan: The Liuren system among the Three Styles; its class-spirit system can be cross-referenced with Qimen's Eight Spirits class-spirits.

Modern Research

• Mathematical structure of Qimen Dunjia: Contemporary scholars have studied Qimen chart arrangement from a combinatorial mathematics perspective; the forward/reverse rules of Nine Palace flight can be transformed into permutation-combination models. Nine Yang Dun and Nine Yin Dun, totaling eighteen configurations, represent a polynomial expansion of the Luoshu numerical sequence and the Heavenly Stems/Earthly Branches system.
• Decision science perspective: Some researchers analogize Qimen Dunjia's four-layer "Star—Gate—Spirit—Instrument" structure to multi-dimensional evaluation matrices in modern decision theory, viewing it as providing a systematic uncertainty management framework.
• History and military history: Qimen Dunjia's application in ancient Chinese military affairs (particularly in the Ming and Qing dynasties) is an important topic in military history research. The military practices of Qi Jiguang, Zeng Guofan, and others all bear traces of divinatory selection.
• Cultural anthropology: The class-spirit systems in Qimen Dunjia (Bagua class-spirits, Nine Star class-spirits, Eight Spirit class-spirits) serve as samples of ancient Chinese folk knowledge taxonomy, reflecting the cognitive structure of pre-modern society regarding all things in the world.
• Critical research: Early Qing scholars already pointed out that year/month/day Qimen comprised "numerous scattered theories with absolutely no settled viewpoints," questioning the fabrications of later Qimen texts. Contemporary researchers should build upon this foundation, using philological methods to sort out inheritance and variation relationships between versions, avoiding the propagation of errors.