Cheng-hua: Year 18, Month 5, Day 13
30 May 1482
The persons sent by Zhao Sai, a member of the native-official ruling family of the Laos Pacification Superintendency in Yun-nan, and.... came to Court and offered tribute of horses and local products. Variegated silks, paper money, thin silks and other goods, as appropriate, were conferred upon them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 48, page 3888