Did Tang Ruowang invent the lunar calendar?

No, it has been improved. 1634, Tang Ruowang assisted Xu Guangqi to complete the voluminous chongzhen almanac, with 46 kinds 137 volumes. The compilation of "The Calendar of Chongzhen" indicates that China astronomy has been integrated into the trend of world astronomy since then. 1645, he compressed the almanac of Chongzhen into the Almanac of Western New Law (103) and presented it to Regent Dourgen.

The Qing court named it Li Shixian, which was printed with the words "the new law follows the west" and was promulgated to the whole world. Since then, it has become the basis for compiling almanac and various astronomical steps every year, and it is also the basis for compiling lunar calendar in China until now. Tang Ruowang was appointed as the supervisor of Qin Tian prison, becoming the first foreign supervisor in the history of China, which initiated the tradition that the Qing court appointed Jesuit missionaries to manage Qin Tian prison for nearly 200 years.

The calendar of Ming Dynasty was in disrepair for a long time, and mistakes often appeared, which needed to be revised urgently. 1629 (the second year of Chongzhen)165438+1October 6, the calendar bureau was established. Calendar Bureau is a temporary organization to study and revise calendars. Its task is to compile an almanac of Chongzhen, which is actually to compile a knowledge integration of western mathematical astronomy. The establishment of Calendar Bureau means that the western classical astronomy system was introduced into China, and the communication between Chinese and Western astronomy began.

Under the auspices of Xu Guangqi, after more than ten years' efforts, the Calendar Bureau finally completed the voluminous "Chongzhen Almanac" in February 1634, with 46 kinds 137 volumes. The content is divided into "five eyes" and "six times".

Baidu Encyclopedia-Tang Ruowang