Zheng-de: Year 4, Month 5, Day 24
11 Jun 1509
The attendant minister Li Yuan and others who had been sent by Li Yi, the king of the country of Annam, came to Court and offered tribute of gold and silver utensils. A banquet was conferred upon them and they were rewarded with brocades, fine silks and other goods, as appropriate.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 63, page 1154