April 16, 1380 (March 11) Gengshen Zhu Di Phan Peking.

1368, the emperor ascended the throne to the emperor, the military and political power firmly in their own hands. from
1370 to 1391, he has three times in 23 of the 26 sons crowned Prince, were dispatched to the country strategy to be stationed.
emperor provides: The seal around Prince shall say in the local civil affairs as emperor representatives of local military power, ground Fangshou Jun monitoring master the local military command. In
1370 L $ dj��.c��m] emperor fourth son Zhu Di on Fan Peiping "target =" _blank "> to Zhu Di are labeled YanWang.
1378, the emperor changed Nanjing is the capital, and let Prince successively dispatched to their respective fiefdoms. (history www.lssdjt.com) April
1380, 16 (thirteen years Hongwu March 11), Yan Wang Zhu Di formally to their own fiefdoms Peking fan. Peking charged with the important task of defending against the intrusion of the Mongolian nobility, so the emperor gave his military establishment, more than any other Prince, and he is permitted in addition to big memorialized military small sole discretion, which makes Zhu Di's power surge.