Yong-le: Year 2, Month 7, Day 3
8 Aug 1404
Dao Lu, who had been sent by his father Dao Xian-da, the pacification superintendent of Che-li, came to Court and offered tribute of local products. It was ordered that a patent of office, headwear, a belt and fine silks be conferred upon Dao Xian-da and that paper money be conferred upon Dao Lu.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 10, page 575