Zheng-tong: Year 2, Month 9, Day 2
1 Oct 1437
...Feng Jie, a native-official deputy battalion commander of the Teng-chong Guard Independent Battalion; Liu-bai-bu-hua, the native-official vice magistrate of Nan Dian Subprefecture; and the chieftain Dao Kong-lue of Zhen-kang Subprefecture; all came to Court and offered tribute of horses and silver utensils. Variegated silks, thin silks and cotton cloth, as appropriate, were conferred upon them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 23, page 0656/57