《明史·志·卷二十八》
二年，太常寺认为内殿在宫禁之地，用太监主管方便。
二年，太常寺以内殿在禁地，用内官供事便。
In the second year, Taichang Temple believed that the inner hall was in the Forbidden City, and it would be convenient for the eunuch to be in charge.