A Short History of Chinese Metaphysics: What Can Actually Be Dated

Histories of Chinese metaphysics usually open the same way. Fu Xi observed the patterns of heaven and drew the eight trigrams. The Yellow Emperor established the sexagenary cycle. Then several thousand years pass in a paragraph and we arrive at the Song dynasty.

None of that is checkable, and the parts that are get compressed to nothing.

This is the same history organised by a different question: what survives, and from when. It produces a shorter story with more in it — and it puts the things a modern BaZi reading actually uses in places that may surprise you.

Before the evidence

The origin accounts are worth naming, because you will meet them, and worth marking as what they are.

Fu Xi and the eight trigrams, the Yellow Emperor and the calendar, the Luoshu square emerging from a river on the back of a turtle — these are traditional accounts, not dated events. They appear in texts far later than the events they describe, and they serve the function origin stories usually serve: they give a practice antiquity and authority.

That does not make them worthless. It makes them a different kind of thing from a book with a preface date.

What is attested early is the sexagenary cycle itself. Stem-branch combinations appear on Shang oracle bones, used to name days — which makes the sixty-term cycle one of the oldest continuously used counting systems anywhere. But naming days is not fate calculation, and the distance between the two is most of this article.

Han: the cosmology arrives

The five phases and yin-yang become a systematic cosmology during the Han, and this is where the intellectual furniture of everything later gets built.

The key move is that the five phases stop being a list and become a system of correspondences — phases mapped to seasons, directions, colours, organs, dynasties, and much else. The apparatus for reading one domain through another is assembled here.

Note what is not yet present: no four pillars, no day master, no Ten Gods. The Han supplies the physics, not the method.

Sui, 594: the first dated systematisation

Here the ground gets firm.

The Wu Xing Da Yi 五行大義 was presented in 594 CE. It is a systematic compilation of five-phase theory — the generation and control cycles, the stems and branches, the correspondences, the 旺相休囚 sequence describing how a phase waxes and wanes through the seasons.

That last one matters more than it sounds. The phase-strength machinery underlying strong and weak day master is present in a text from 594, roughly four centuries before anyone reads a chart from the day stem. The parts arrive long before the method that assembles them.

It is also the first work in this history with a date you can put a finger on.

Tang: a documented practitioner

Li Xuzhong 李虛中, roughly 762 to 813, is the first person in this story we can be confident existed, because Han Yu wrote his tomb epitaph.

The epitaph says Li used a person's birth year, month and day, with their stems and branches, to predict fortune, rank and lifespan. No hour. No "four pillars" — that term is a Song coinage. And it does not say he wrote a book.

So at the end of the Tang: a named practitioner, a three-component method anchored on the year, and an outside witness. That is a great deal more than the previous three thousand years offer.

Song: the shift, and the first survivable evidence of it

The Song is where the method that produces modern charts appears, and where the evidence gets complicated.

The shift itself is real: from reading the year pillar through 納音 nayin and an apparatus of spirit-stars, to reading the day stem through five-element relation. That is the change the name "Ziping" denotes, whether or not a man called Xu Ziping made it.

But the best-dated Song text documents the method being replaced, not the replacement. The Wu Xing Jing Ji 五行精紀 by Liao Zhong carries a preface dated 1196 and was printed in 1228. In thirty-four juan it cites around fifty-one earlier works, and it records the old method in full — year pillar, nayin, spirit-stars.

That is the shape of the evidence here. We have a securely dated snapshot of what came before, and we have later texts describing what came after, and the transition between them is reconstructed rather than witnessed.

Also Song: Xu Dasheng 徐大升, a Qiantang man of the Baoyou era, 1253 to 1258, whose works became the core of the Yuanhai Ziping — and whose Ziping Sanming Tongbian Yuanyuan was still a Korean state examination text more than two centuries later.

Ming: the compilation century

Almost every text a modern reader would call classical is Ming or later. This is the century where the system was written down in the form that survives.

1548, 1599, 1634 — the three named Ming hands who built the Yuanhai Ziping from Xu Dasheng's Song works. Yang Cong, Li Qin, Tang Jinchi.

1578 — the Sanming Tonghui 三命通會 by Wan Minying, a Ming official with a jinshi degree. The Siku Quanshu abstract says that since the Ming, everyone discussing fate-study has used this as their compendium. It is where the Ten Gods reach mature form.

Late Ming, undated — the anonymous manuscript 欄江網, which became the Qiong Tong Bao Jian in the Qing and introduced climatic adjustment, 調候.

So: the Song supplied the frame, and the Ming supplied the books.

Qing: the analytical apparatus

And the Qing supplied most of what a reading actually does with a chart.

1776 — the Ziping Zhenquan 子平真詮, preface dated, by Shen Xiaozhan, who took his jinshi in 1739. This is where the favourable element doctrine is systematised, with the month command primary.

1820s–30s — Ren Tiechao's commentary on the Di Tian Sui 滴天髓, which is the form of that text people actually read. The original's attribution to the early-Ming statesman Liu Ji is disputed; the commentary is what carries the balancing doctrine.

Late 19th century — Yu Chuntai edits and prints the Qiong Tong Bao Jian.

Then the Republican-era annotator Xu Lewu works through the lot in the 1930s, and it is through him that much of this reached twentieth-century Japan.

What the shape of it tells you

Lay the dated points end to end and the distribution is lopsided in a way the usual story hides.

Three thousand years of prehistory, then almost everything in twelve hundred — and the analytical tools a modern reading leans on hardest arriving in the last three centuries of that.

A reading that says your day master is weak and prescribes Water is using a frame from the Song, a vocabulary matured in 1578, and a doctrine systematised in 1776. That is old. It is not ancient in the way the origin stories imply, and knowing which parts are which is worth more than a longer number.

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Sources

Five-phase theory and the early record Wu Xing Da Yi 五行大義, presented 594 CE. — Shang oracle-bone sexagenary notation is standard in the archaeological literature.

Li Xuzhong and the Tang Han Yu 韓愈, 〈殿中侍御史李君墓志銘〉, in the Changli 昌黎 collection. — Ulrich Theobald, ChinaKnowledge.de, on the textual history of the Li Xuzhong mingshu 李虛中命書 and Yu Jiaxi 余嘉錫's assessment of it.

The Song transition Liao Zhong 廖中, Wu Xing Jing Ji 五行精紀, preface by Zhou Bida 周必大 dated 1196, printed 1228. — Zou Wenyao 鄒文耀, 《子平命學考證》. — Zhang Xinzhi 張新智, 《子平命學溯源—唐宋命學要籍考辨》, Hongguang University of Science and Technology.

The Ming and Qing canon Siku Quanshu 四庫全書 abstracts on 徐子平, 李虛中命書 and 三命通會. — Chao Wei-pang, "The Chinese Science of Fate-Calculation," Folklore Studies 5 (1946). — Lu Zhiji 陸致極, 《中國命理學史論》.

General Michael Lackner and Zhao Lu, eds., Handbook of Divination and Prognostication in China (Brill, 2022).