Tian-shun: Year 3, Month 1, Day 4
6 Feb 1459
...and the chieftain Meng Ban-qing and others who had been sent by Si Bu-fa of Meng-yang in Yun-nan, came to Court and offered tribute of gold and silver utensils, elephants and horses. A banquet as well as biao-li of variegated silk, suits of clothing and other goods, as appropriate, were conferred upon them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 37, page 6348