Jing-tai: Year 6, Month 4, Day 13
29 Apr 1455
The chieftain Ban Meng-bing and others from Meng-gen Prefecture in Yun-nan, who had come to Court to offer tribute of local products, took leave of the Court. It was ordered that they take Imperial orders, brocaded silks and other goods to confer, on their return, upon the native-official prefect Qing-ma-la and his wife.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 34, page 5448