Yīxué qǐyuán 醫學啟源
Origins of Medical Learning by 張元素 (撰)
About the work
The Yīxué qǐyuán 醫學啟源 is the foundational theoretical treatise of the Yìshuǐ school 易水派, the third great JīnYuán current of medical learning alongside Liú Wánsù’s Héjiān 河間 school and Zhāng Cóngzhèng’s gōngxià 攻下 school. Zhāng Yuánsù 張元素 (zì Jiégǔ 潔古, ca. 1151–1234), a native of Yìzhōu 易州 in modern Héběi, composed the work as a textbook for his students — most prominently Lǐ Gǎo 李杲 (Lǐ Dōngyuán 李東垣) — and it is the most systematic surviving record of his medical thought. In three juan: juan shàng treats the configuration of the heavens, the zàngfǔ and channel system, the pulse, and the diagnosis of disease pattern; juan zhōng excerpts the Sùwèn 素問’s “essentials of treatment” (主治備要), organising the five-circulatory and six-qì 五運六氣 doctrine into a practical pathology; juan xià, the Yòngyào bèizhǐ 用藥備旨, is a materia-medica reasoned in terms of the qìwèi / ascent-descent / yīnyáng dialectic that Zhāng made the signature of his school. The work is the conduit through which the Nèijīng tradition of “yùnqì” disease aetiology was reformulated for the bedside, and through Lǐ Gǎo it became the bedrock of the Spleen-Stomach school and, ultimately, of mainstream JīnYuánMíng internal medicine.
Abstract
The catalog meta gives the author as Zhāng Yuánsù 張元素 and the dynasty as Jīn 金, which is correct. The Kanripo edition is taken from the Hǎiwài huíguī Zhōngyī shànběn cóngshū / Hǎixué wéndòng (hxwd) collection of medical rarities rather than from the Sìkù quánshū, since the Yīxué qǐyuán was not included in the WYG. The work’s transmission is unusual: Zhāng Jífǔ 張吉甫 (“Lánquán lǎorén” 蘭泉老人), the preface-writer, records that during the rénchén disaster of 1232 (the fall of Biànjīng to the Mongols) Zhāng Yuánsù’s entire Yīfāng 醫方 in thirty juan was lost, and that only the Yīxué qǐyuán survived. The preface was written at the request of Lǐ Míngzhī 李明之 — i.e. Lǐ Gǎo 李杲, Zhāng’s chief disciple — so the surviving recension reflects a post-1232 reconstruction circulated within the Yìshuǐ school in the early Yuán.
The composition itself is conventionally dated 1186 on the strength of pharmacological-historical scholarship that traces the earliest record of Shēngmài sǎn 生脈散 to this work (and notes that Lǐ Gǎo’s 1231 Nèiwài shāngbiàn huòlùn postdates it by some 45 years). Some sources prefer a looser “c. 1210” bracket. The composition window 1186–1234 used here brackets the conventional date against Zhāng’s death.
The text is best known for three innovations: (1) the yǐnjīng yào 引經藥 doctrine — assigning each materia-medica substance to a specific channel as its “guiding” agent — which underwrites all later channel-tropic pharmacology; (2) the application of qìwèi hòubó 氣味厚薄 / shēngjiàng fúchén 升降浮沉 categories to drug action, set out as the Yòngyào bèizhǐ in juan xià; and (3) the polemical insistence (recorded in Zhāng Jífǔ’s preface) that gǔfāng 古方 must not be applied to xīnbìng 新病 unaltered — the principle that catalyzed the JīnYuán rejection of pure formulary medicine. Zhāng Jífǔ’s preface preserves the famous anecdote of Zhāng Yuánsù diagnosing 劉完素 Liú Wánsù’s own cold-damage illness when other physicians had failed, the foundation-myth of the Yìshuǐ school.
Translations and research
- Zhèng Hóngxīn 鄭洪新 (ed.), Zhāng Yuánsù yīxué quánshū 張元素醫學全書, Beijing: Zhōngguó zhōngyīyào chūbǎnshè, 2006 — collected critical edition of all Zhāng Yuánsù attributions including the Yīxué qǐyuán.
- Rèn Yīngqiū 任應秋, Jīn Yuán sì dà yījiā xuéshù sīxiǎng zhī yánjiū 金元四大醫家學術思想之研究, Beijing: Rénmín wèishēng chūbǎnshè, 1980 — standard Chinese study of the Jīn-Yuán schools with a chapter on the Yìshuǐ tradition.
- Paul U. Unschuld, Medicine in China: A History of Pharmaceutics, Berkeley: University of California Press, 1986, ch. 7 (“The era of the Jin-Yuan dynasties”) — discusses Zhāng Yuánsù’s qì-wèi pharmacology and channel-guiding doctrine.
- Wáng Xīnhuá 王新華 et al., “Yuánsù Zhāng’s Yīxué qǐyuán — analysis of the drug rules and medical thought characteristics of the Six Qì prescriptions,” Medicine (Baltimore) 101.52 (2022), e32500.
- TJ Hinrichs & Linda L. Barnes (eds.), Chinese Medicine and Healing: An Illustrated History, Cambridge MA: Harvard University Press, 2013 — frames the Yìshuǐ school within the broader Jīn-Yuán reform.
Other points of interest
The pharmacology of juan xià is the direct ancestor of the channel-tropic apparatus elaborated in Lǐ Gǎo’s Yòngyào fǎxiàng 用藥法象 and, two generations later, in Wáng Hǎogǔ’s KR3e0064 Tāngyè běncǎo 湯液本草 — three works that together transmit the Yìshuǐ school’s distinctive doctrine of materia-medica reasoned from cosmological qìwèi rather than from empirical herbalism alone.