Jisho

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Wikipedia definition
1. Guo ShoujingGuo Shoujing, courtesy name Ruosi (若思), was a Chinese astronomer, engineer, and mathematician born in Xingtai, Hebei who lived during the Yuan Dynasty (1271–1368). The later Johann Adam Schall von Bell (1591–1666) was so impressed with the preserved astronomical instruments of Guo that he called him "the Tycho Brahe of China."
Read “Guo Shoujing” on English Wikipedia
Read “郭守敬” on Japanese Wikipedia
Read “Guo Shoujing” on DBpedia

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