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

Kong Guangsen was from Qufu 曲阜

Kong Guangsen learned from Dai Zhen when he was young (少) and acquired Dai's learning

Kong Guangsen was xiucai 秀才 when 17 (年十七舉於鄉)

Kong Guangsen acquired the title of jinshi 進士 (乾隆三十六年) and was bestowed jiantao 檢討 in the Hanlin Academy 翰林

Kong Guangsen read and learned from mathematical works when he served in the Hanlin Academy 翰林

Kong Guangsen is the author of Zhu cheng fang lian yu tu 諸乘方廉隅圖

Kong Guangsen is the author of Shao guang zheng fu shu nei wai pian 少廣正負術內外篇

Kong Guangsen is the author of 訂正算法統宗求築隄法, which is appended to Shao guang zheng fu shu nei wai pian 少廣正負術內外篇, aiming to modify Suan fa tong zong 算法統宗

Kong Guangsen left his official service and went back home because of his mother's death; he then built Yizheng tang 儀鄭堂 becuse he admired Zheng Xuan 鄭玄