title: [Influence of Adam Schall's changing calendar on Yun - qi theory in the early Qing Dynasty].
abstract: The Yun - qi theory is closely related to the calendar system. In Chinese history, the change of the calendar system by Adam Schall von Bell in early Qing Dynasty was a disputable event. Studying its effect on Yun - qi theory, we find out the issue of changing the order of Zi and Shen lunar mansions, which annoyed many Chinese astronomers and scholars, had no significant influence on Yun - qi theory. As for the new calculation system of clepsydra and solar terms, these changes increased the accuracy of the Yun - qi calendar.
authors.forename: S
authors.initials: S
authors.lastname: Yang
authors.forename: H
authors.initials: H
authors.lastname: Zhng
mesh_terms: D001256:Astronomy / Q000266:history*; D002681:China; D005060:Europe; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D010684:Philosophy / Q000266:history*