#Onthisday in history Gu Yanwu was born July 15th 1613 A.D and died February 15th 1682 A.D. he was a Chinese philologist and a geographer, he spent his youth during the Manchu conquest of China, in the Anti-manchu activities, after the Ming Dynasty was overthrown. He never served the Qing Dynasty in any way but, instead, he travelled throughout the country and devoted himself to studies.