Xuan-de: Year 5, Month 6, Day 19
9 Jul 1430
Teng-chong Subprefecture was established under the Jin-chi Military and Civilian Command in Yun-nan, with an establishment of one native-official subprefectural magistrate. At this time, Zhang Ming, the native-official deputy battalion commander of the Teng-chong Independent Battalion, said that the battalion was situated on the distant border and that Si Ren-fa, the pacification superintendent of Lu-chuan, often engaged in feuding and killing, frightening and disturbing the yi people there. He requested that a subprefecture be established to govern the area and an official appointed to it so that, together with the Teng-chong Independent Battalion, it could defend and soothe the area and keep the people at peace in their occupations. The Emperor approved this and appointed Ming as the magistrate of Teng-chong Subprefecture.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 19, page 1583