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

Xu Rulan 許如蘭 was from Quanjiao 全椒

Xu Rulan 許如蘭 studied 薛鳳祚's Tian bu zhen yuan 天步真原

Xu Rulan 許如蘭 studied Xue Fengzuo's 薛鳳祚 Tian xue hui tong 天學會通

Xu Rulan 許如蘭 studied 梅文鼎's Mei shi li suan quan shu 梅氏暦算全書 from colleague Wu Lang 吳烺

Hu Zaochun 胡早春 was a student of Xu Rulan 許如蘭

Xu Rulan 許如蘭 was the author of Qian xiang shi yi 乾象拾遺, which was lost

Xu Rulan 許如蘭 was the author of Chun hui lou ji 春暉樓集, which was lost

Xu Rulan 許如蘭 was the author of Shu mei shi yue jian fei zhuan yan dou bing lun hou 書梅氏月建非專言斗柄論後

Xu Rulan 許如蘭 was juren 舉人 in 1765 (乾隆30年)

Xu Rulan 許如蘭 met and learned from Dai Zhen 戴震 in Beijing (京都), 1775 (乾隆40年)

Xu Rulan 許如蘭 studied Go gu ge yuan ji 句股割圓記 from Dai Zhen 戴震 in Beijing (京都), 1775 (乾隆40年)

Xu Rulan 許如蘭 was a student of Dong Huaxing 董化星 in Changzhou 常州, 1779 (乾隆44年)

Xu Rulan 許如蘭 was had been appointed zhixian 知縣 of Fulian 浮梁, Shangyo 上猶 and Xinjian 新建 in Jiangxi 江西 since 1781 (乾隆46年)