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Xu Da (1332–1385), courtesy name Tiande, was a Chinese military general and official who lived in the late Yuan dynasty and early Ming dynasty. He was a friend of the Hongwu Emperor, the founder and first ruler of the Ming dynasty, and assisted him in overthrowing the Mongol-led Yuan dynasty and establishing the Ming dynasty. He was also the father of Empress Xu, who married the third Ming ruler, the Yongle Emperor, and maternal grandfather of the Hongxi Emperor. Wikipedia