The Chinese divination systems, ranked by how hard they are
Five systems, five different questions. Most people only meet the easiest one.
4 min read · Published 16 August 2026
The short answer
Chinese divination is not one practice. The I Ching answers a question you ask now. BaZi and Zi Wei Dou Shu read a life from a birth moment. Da Liu Ren and Qi Men Dun Jia are the 'Three Rites' arts, which read a specific moment to answer a specific question — traditionally the hardest and most technical of the lot, historically restricted, and still the ones with the fewest competent practitioners. None of them has been shown to work; all of them are internally rigorous, which is a genuinely different thing.
Five systems, five questions
| System | The question it answers | Difficulty |
|---|---|---|
| I Ching (易經) | What is the shape of this situation, and where is it going? | Easy to consult, hard to interpret |
| BaZi (八字) | What kind of life is this person built for? | Moderate — the chart is mechanical, the reading is not |
| Zi Wei Dou Shu (紫微斗數) | The same, through 100-plus stars in twelve palaces | High |
| Da Liu Ren (大六壬) | What is actually going on, right now, in this specific matter? | Very high |
| Qi Men Dun Jia (奇門遁甲) | What should I do, where and when, to get an outcome? | Very high |
The last three are called the Three Rites (三式) together with Tai Yi. They were restricted knowledge for long periods — Qi Men in particular was treated as a military art — and the restriction was taken seriously enough that transmission remains patchy.
The I Ching is the one everyone meets
Sixty-four hexagrams, each six lines, each line either yin or yang. You generate one — traditionally with yarrow stalks, commonly with three coins — read its text, and read the hexagram it changes into.
It is genuinely ancient, its commentary layer is a serious piece of philosophy, and it is the easiest of these to attempt and the hardest to do well. The text is famously ambiguous, which is both its literary strength and the reason it is unfalsifiable.
Birth-chart systems: BaZi and Zi Wei Dou Shu
Both read a life from a birth moment, and they are not variants of each other. BaZi works with eight characters — four pillars of a stem and a branch — and reasons about the interaction of five elements. Zi Wei Dou Shu places over a hundred named stars into twelve palaces and reads their combinations.
Practitioners often use both, and the traditional division of labour is that BaZi reads the shape of a life and Zi Wei reads the detail of its domains. AsterNym computes BaZi; we do not compute Zi Wei, because doing it properly is a substantial undertaking and doing it badly would be worse than not offering it.
The hard ones
Da Liu Ren (大六壬) builds a chart from the moment a question is asked, using the twelve Earthly Branches, twelve generals and a four-lesson structure, and reads the situation as it stands. Its reputation is as the most analytically demanding of the three.
Qi Men Dun Jia (奇門遁甲) builds a nine-palace grid from the moment, populated with stars, doors, deities and stems, and is used to choose action — direction, timing, approach. It is the strategic art rather than the diagnostic one.
Both are taught with an insistence on years of study before anyone should charge for a reading, which is not a claim of validity but is a meaningful signal about how the traditions see themselves.
Common questions
- What is the difference between BaZi and the I Ching?
- BaZi reads a person's life from their birth moment and is fixed for that person. The I Ching answers a specific question asked at a specific time and is generated fresh each consultation. They are different categories of practice rather than competing systems.
- What are the Three Rites?
- Da Liu Ren, Qi Men Dun Jia and Tai Yi Shen Shu — traditionally the three highest arts of Chinese divination. They were restricted knowledge for long periods, Qi Men Dun Jia particularly as a military art, and they remain the most technically demanding.
- Which Chinese divination system is hardest?
- By tradition and by reputation, Da Liu Ren and Qi Men Dun Jia. Both build a chart from the moment a question is asked and require substantial memorised structure before any reading is possible.
- Does Chinese divination work?
- There is no evidence that any of these systems predicts events better than chance. They are internally rigorous, which is a different property from being correct, and worth distinguishing carefully.