《明史·列传·卷八十》
不久张翀又上书说： 宦官外出镇守，并不是太祖、太宗的老规矩，只是景帝碰上国家多灾多难，偶尔实行一次罢了。
寻言： 中官出镇，非太祖、太宗旧制。景帝遭国家多故，偶一行之。
After a while, Zhang Chong wrote a letter, saying:" Eunuchs are not the old rules of Taizu and Taizong to go out to garrison, but Jingdi only did it once when the state was in great difficulty.