《明史·本纪·卷六》
二月三日，设北京留守代替后军都督府、行部、国子监，改北平为顺天府。
二月庚戌，设北京留守行后军都督府、行部、国子监，改北平曰顺天府。
On the third day of the second month, established the Beijing Garrison in place of the Rear Guard General's Office, the Office of Military Operations, and the Imperial Academy. Renamed Beiping to Shuntian Prefecture.