Niánlì 年曆
Annual Chronology by 杜預 (Dù Yù, Western Jìn statesman, polymath, and Zuǒzhuàn commentator, 222–284, 晉, zhuàn 撰)
About the work
A short astronomical-calendrical compilation by the Western Jìn statesman Dù Yù 杜預 (222–284) — better known to the classical tradition as the author of the foundational Chūnqiū jīngzhuàn jíjiě 春秋經傳集解 (KR1e0002) — surviving only as fragments preserved in the Táng lèishū. The work is a niánlì, i.e. a chronological-and-calendrical reference handbook, in the tradition of Liú Xīn’s 劉歆 Sāntǒng lì 三統曆 and Dù Yù’s own Tàishǐ 太始 calendrical reform of the early Western Jìn.
Abstract
Composition window: c. 260–284, i.e. between Dù Yù’s emergence at the CáoWèi / early-Jìn court and his death in 284. The Tàishǐ 太始 calendrical reform that Dù Yù championed was promulgated in 274 (Tàishǐ 10); the Niánlì is most naturally dated to the same calendrical-research moment. Wilkinson’s Chinese History: A New Manual §A (Chronology) records Dù Yù’s calendrical work as the basis for cyclical-date assignment in the Chūnqiū 春秋 annals (Wilkinson Box 274: “Du Yu 杜預 (astronomer of Jin). Assigned cyclical dates for each year of the Chunqiu”).
The surviving fragments collected in this Kanripo reconstruction (a Qing fragment-collection edition, probably by Mǎ Guóhàn 馬國翰 or a related compiler) fall into three substantive clusters:
(1) Definitions of the sun and the moon as cosmic principles. The opening fragment — “rì zhě, zhòng yáng zhī zōng, yáng jīng wài fā, gù rì yǐ zhòu míng, míng yuē yào líng” 日者，眾陽之宗，陽精外發，故日以晝明，名曰曜靈 (“the sun is the ancestor of all yang; its yang-essence radiates outward; therefore it brightens by day; it is named Yàolíng”) — is quoted in Yú Shìnán’s 虞世南 Běitáng shūchāo 北堂書鈔 juàn 149, in Ōuyáng Xún’s Yìwén lèijù 藝文類聚 juàn 1, in Tàipíng yùlǎn juàn 4, and in Qútán Xīdá 瞿曇悉達’s Kāiyuán zhànjīng 開元占經 juàn 5. The parallel moon-definition follows — “yuè zhě, qún yīn zhī jīng, guāng nèi rì yǐng, yuè yǐ xiāo yào, míng yuē yèguāng” 月者，群陰之精，光內日影，月以宵耀，名曰夜光 — also widely cited.
(2) Astronomical observations on the planet Mercury (辰星): that Mercury appears at the kuí–lóu 奎婁 lodges at spring equinox (春分), at the dōngjǐng 東井 lodge at summer solstice (夏至), at the jiǎo–gāng 角亢 lodges at autumn equinox (秋分), and at the dǒu–niú 斗牛 lodges at winter solstice (冬至). The fragment includes interspersed Sòng Jūn 宋均 commentary (Sòng Jūn was a HànWèi chènwěi 讖緯 specialist) — suggesting the DùYù Niánlì preserved an earlier Hàn astronomical-and-correlative tradition rather than original Jìn computation.
(3) Lodge-and-asterism nomenclature: an extensive list of alternative names for the twelve cì 次 (Jupiter stations) — Yíngshì 營室 also called Xiūguān 休官; Bì 畢 also called Tiāněr 天耳, Tiānmù 天目, Fēngkǒu 風口; Qīxīng 七星 also called Yánjǐng 延頸; Shòuxīng 壽星 also called Tiānkù 天庫, Tiānyì 天翼, Tiānzhèng 天正; Dàhuǒ 大火 also called Tiānxiāng 天相, Tiānfǔ 天府; Xīmù 析木 also called Tiānchéngxiàng 天丞相, Tiānsīkōng 天司空, Tiānzhǒngzǐ 天冢子, Tiānjīn 天津; and so on across all twelve cì. This nomenclature is one of the principal channels through which the HànJìn astrological-asterism tradition reached the Táng Kāiyuán zhànjīng corpus (the Yíngshì gloss is quoted at Kāiyuán zhànjīng juàn 61, Bì at juàn 62, Qīxīng at juàn 63, Shòuxīng at juàn 64).
(4) The Dipper-and-the-Nine-Provinces system: the long closing fragment (preserved at Kāiyuán zhànjīng juàn 67) gives the seven stars of the Northern Dipper individually — Shū 樞, Xuán 璇, Jī 璣, Quán 權, Yùhéng 玉衡, Kāiyáng 闓陽, Yáoguāng 搖光 — assigning each to a planet (Venus, Saturn, Mars, Mercury, Jupiter, Sun, Moon respectively) and to a province (Yōng 雍, Yì 翼, QīngYǎn 青兗, XúYáng 徐揚, Jīng 荊, Liáng 梁, Yù 豫). The system is then elaborated into a year-and-month cycle whereby the meeting of sun and moon in each month falls in a specific Jupiter-station (孟春建寅 sun-and-moon meet in Shǐwéi 豕韋; zhòngchūn 仲春建卯 meet in Jiànglóu 降婁; etc.).
The work occupies an interesting position in the history of Chinese astronomical scholarship: as a senior court official (Dù Yù served as Zhènnán dà jiāngjūn 鎮南大將軍 and commanded the southern wing of the 280 conquest of Wú), Dù Yù synthesised Hàn chènwěi astrological lore with the newly-instituted Jìn Tàishǐ calendar, producing a reference handbook for court use. Its survival in fragments is unfortunate but characteristic: the corpus of Six-Dynasties calendrical handbooks (年曆, niánlì) is almost entirely lost in its primary form and survives only in lèishū citation.
For Dù Yù’s larger scholarly contribution, including the Zuǒzhuàn commentary and his calendrical reform, see 杜預.
Translations and research
- Cullen, Christopher. Astronomy and Mathematics in Ancient China: the Zhou Bi Suan Jing. Cambridge, 1996, pp. 213–214 — surveys the Hàn-Jìn correlative-astronomy tradition that the Nián-lì fragments preserve.
- Needham, Joseph. Science and Civilisation in China, vol. 3 (1959), pp. 200–262 — the Han-Wei-Jin astronomical inheritance.
- Bielenstein, Hans. “Han Portents and Prognostications”, Bulletin of the Museum of Far Eastern Antiquities 56 (1984), 97–112 — the chèn-wěi correlative-astronomy tradition that Dù Yù synthesises.
- Sūn Xiǎo-chún 孫小淳 and Kistemaker, Jacob. The Chinese Sky during the Han: Constellating Stars and Society. Brill, 1997 — the asterism-nomenclature tradition.
- Yáng Bó-jùn 楊伯峻. Chūn-qiū Zuǒ-zhuàn zhù 春秋左傳注. Zhōng-huá shū-jú, 1981, pp. 13–35 of the preface — discusses Dù Yù’s calendrical scholarship in the context of his Zuǒ-zhuàn work.
Other points of interest
The Sòng-Jūn-style commentary embedded in the Mercury-observation fragment is a useful index of Dù Yù’s scholarly method: he treats the Hàn chènwěi commentary tradition not as discredited apocrypha (the standard later-imperial verdict on chènwěi) but as a legitimate source of astronomical-and-correlative knowledge to be incorporated into his reference compilation. This is consistent with his other work — his Chūnqiū jīngzhuàn jíjiě is similarly catholic in its use of HànWèi commentary, and his Tàishǐ calendar is the last major Chinese state calendar to integrate chènwěi numerological elements before the late-imperial separation of state calendar and apocryphal cosmology.