The Darning Calendar made by Zu Chongzhi is one of the most innovative calendar in ancient China，with the introduction of precession，the reform on the cycle of intercalary months，the newly measurement of length of tropical year and the establishment of the method of measuring the time of winter solstice being the most important contributions. The facts that he looked high on actual measurement，was industrious at thinking，goo d at using predecessor’s achievements and brave to struggle against fogeyish thought，all of which are all recorded in historical books，are important cause for his making a lot of innovation and obtaining so many achievements.In memorial of the great man of science，this article gives accounts on the causes and results of all that stated above.
本文下载地址: Zu Chongzhi's Works on Astronomy and Calendar Making--Memorial of the 1500th Anniversary of Zu's Death(p.68)