High Quality Content by WIKIPEDIA articles! Xu Guangqi, courtesy name Zixian , was a Chinese bureaucrat, agricultural scientist, astronomer, and mathematician in the Ming Dynasty. Xu was a colleague and collaborator of the Italian Jesuits Matteo Ricci and Sabatino de Ursis and they translated several classic Western texts into Chinese, including part of Euclid's Elements. He was also the author of the Nong Zheng Quan Shu, one of the first comprehensive treatises on the subject of agriculture. Xu Guangqi was born into a relatively poor family in Shanghai on April 24, 1562. His father, Xu Sicheng, was in difficult financial situation when Guangqi was a child, and had to support the family with a small vegetable farm, but apparently still earned enough to be able to send his son to school at the age of six.

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