Yong-le: Year 3, Month 7, Day 20
14 Aug 1405
Meng-gen Prefecture was established subordinate to the Yun-nan Regional Military Commission and the Dai-ken native official Dao Ai was appointed as prefect, provided with a seal and patent and had headwear and a belt conferred upon him. At this time, a person who had been sent by Dao Ai had come to Court and requested that a government office be established. This order was accordingly issued.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 10, page 700