Hong-zhi: Year 14, Month 5, Day 13
29 May 1501
The chieftain Si Wan and others, who had been sent by Bu-la-lang, the pacification superintendent of the Ava-Burma Pacification Superintendency in Yun-nan, came to offer tribute. On their departure, brocaded silks were given to them to confer upon Bu-la-lang and his wife. A banquet, as well as variegated silks, clothing and other goods, in accordance with the precedents, were conferred upon Si Wan and the others.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 58, page 3178