《明史·志·卷六十五》
又任用汪直全面监督团营，禁军让宦官独自掌管，从成化年间开始。
又用汪直总督团营，禁旅专掌于内臣，自帝始也。
Furthermore, Wang Zhi was appointed to supervise the group camp, the imperial guards were under the sole control of the eunuchs, and it began in the Cheng Hua era.