《明史·列传·卷四十三》
在宣府二十年，修建屯堡，严整守备，增设驿传，又请给各边镇颁给火器。
在宣府二十年，修屯堡，严守备，增驿传，又请颁给火器于各边。
He stayed in Xuanfu for 20 years, setting up fortresses, shoring up the troops, establishing relay stations, and asking for firearms to be issued to the various frontier towns.