Individual itineraries and the circulation of scientific and technical knowledge in East Asia (16th–20th centuries)

Name changed from Huihui sitianjian 回回司天監.

Translation of Huihui li 回回曆 and Jingwei du tianwen 經緯度天文 and other books, with Li Chong 李翀. Translation imperially commissioned on 1382/10/24.

Member of the group of imperially commissioned translators of Huihui li 回回曆 and other books

Leader of the group of translators of Huihui li 回回曆 and Jingwei du tianwen 經緯度天文 and other books, with Li Chong 李翀 and others. Translation imperially commissioned on 1382/10/24.

Position of Director (Jianzhengfu 監正副, here called Jianfu 監副)of the Directorate of Astronomy (Qintianjian 欽天監). Made a change in the calendar system (changed the "tong" 統 to Hongwu 17 as the starting point).

Birth in Jinling 金陵

Appointment to various posts in Nanjing in the Ministry of Justice, from secretary to bureau director

Denunciation of Zhang Juzheng 张居正 (1525-1582) in a memorial

Appointment to Vice Director of the Ministry of Works in Nanjing (Nanjing gongbu yuanwailang 談南京工部員外郎)