Yong-le: Year 1, Month 8, Day 25
11 Sep 1403
The eunuch Yang Xuan and others were sent to take Imperial orders of soothing and instruction to the native officials of the regions of Lu-chuan, Che-li, Ba-bai, Laos, Gu-la, Zhao-min-te-ling, Dong-wu, Meng-ding, Meng-yang and Mu-bang. In addition, the Xi-ping Marquis Mu Sheng sent people to accompany them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 10, page 414