Zheng-tong: Year 3, Month 9, Day 23
11 Oct 1438
The chieftains sent by Dao Feng-han, the native-official magistrate of Da-hou Subprefecture in Yun-nan and.... came to Court and offered tribute of horses, gold and silver utensils and other local products. A banquet as well as variegated silks, paper money and other goods, as appropriate, were conferred upon them.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 24, page 897