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Guo Shoujing

Astronomer
Guo Shoujing, courtesy name Ruosi, was a Chinese astronomer, hydraulic engineer, mathematician, and politician of the Yuan dynasty. The later Johann Adam Schall von Bell was so impressed with the preserved astronomical instruments of Guo that he... Wikipedia
Born: 1231, Xingtai, China
Died: 1316 (age 85 years), Khanbaliq
Known for: Shňushí Calendar (授时曆; 'Season-Granting Calendar')