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Overview
Key data
| Item | Detail |
|---|---|
| Completed | 1370 CE |
| Compilers | Song Lian and others |
| Chapters | Treatises 13–14 |
| Core content | The Shoushi calendar’s methods |
The work
The Yuan shi was compiled under Song Lian in the early Ming. Its two calendrical chapters treat of the making of the Shoushi calendar and its procedures.
What it preserves
It contains the methods of the Shoushi, in the “discussion” and the “canon” alike.
The methods of Guo Shoujing and Wang Xun survive here: the dropping of the grand epoch, third-order interpolation and the arc-and-arrow method are all found in it.
Why it lasted so long
The Shoushi was used 363 years; its precision and stability can be judged from this treatise. For the calendar itself it is the first-hand source.
Full text
Simplified Chinese (TXT) ｜ Traditional Chinese (TXT)
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The title, date, summary and index structure compiled here are offered under CC BY 4.0 (attribution: Chujia Kuang · kuangchujia.com).
The full electronic text (about 99,024 characters: only the 6 juan listed on this page, not the complete history) is taken from the Chinese Wikisource text of Yuan shi — calendrical treatise; that part is offered under CC BY-SA 4.0 (attribution — share alike); source: zh.wikisource.org.
The electronic text has not been collated by us; please check the original before citing.
Compiled and arranged by Chujia Kuang.