Yong-le: Year 9, Month 5, Day 21
12 Jun 1411
Dao Ping, the native-official prefect of Zhen-yuan Prefecture and Zi En, the deputy chieftain of the Xi-chu Dian Chief's Office, both in Yun-nan, came to Court and offered tribute of horses and gold and silver utensils. Rewards, as appropriate, were conferred upon them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 12, page 1472/73