Xuan-de: Year 2, Month 9, Day 12
2 Oct 1427
Mang De-la, the great chieftain (大頭目) of Ava-Burma was appointed as the superintendent of the Ava-Burma Pacification Superintendency. Earlier, the Ava-Burma Pacification Superintendent Xin-jia-si had been killed in feuding with Mu-bang. His sons and younger brothers fled and the Ava-Burma chieftains and elders all selected the great chieftain Mang De-la to temporarily rule the region. The yi people were submissive and they loyally fulfilled their tribute duties. Thus, at this time, the Ministry of War requested that the regional commander and the three offices of Yun-nan carry out a detailed investigation of Mang De-la and that, if he had the trust of the yi people, that he be officially appointed. The Emperor said: "If the man and the yi of the distant regions are allowed this as an expression of good-will, it will permit the troops to rest and bring the people peace. This is also the way to sway the yi. Appoint him immediately as pacification superintendent. There is no need for an investigation."
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 17, page 0803/04