Xu Da (1332— 1385) was born in Haozhou (now Fengyang, Anhui). Peasant background.

In 13th year of Yuan Dynasty (1353), he joined the Zhu Yuanzhang Rebel Army, and was known as a gifted scholar with the same reputation as Chang Yuchun. In fifteen years, he crossed the river with Zhu Yuanzhang, quarried stones and celebrated the next episode (now Nanjing). In seventeen years, he led the troops eastward and defeated the army of Zhang Shicheng, the king of Wu. In the autumn of 23 years, Chen Youliang was defeated by Poyang Lake. In September 27, Pingjiang (now Suzhou) was captured, Wu was destroyed, and Zhang Shicheng and his soldiers were captured by 250,000, and returned to the motherland to become lord protector. In the same year 10, General Lu Zheng led an army to participate in the Northern Expedition of the Yuan Army. He first took Shandong, then turned to Henan, and then conquered the Yuan Dynasty (now Beijing) and changed his name to Beiping. Forced to travel north in the desert, Yuan died.