Tian-shun: Year 8, Month 7, Day 4
6 Aug 1464
The chieftain La-meng-la-xian from Ning-yuan Subprefecture in the country of Annam, led "black-legged" Bai-yi bandits in attacking Luo-mei and other villages in Lin-an Prefecture, Yun-nan. The Prefect Zhou Ying concealed this fact and did not report the incident. After that, A Zhai and others, a total of over 80 men and women from Annam came to allegiance. Ying again concealed his mistakes and claimed credit for this. The Vice Commissioner-in-chief Mu Zan, regional commander of Yun-nan, and others advised of this. The Censorate requested that the regional inspector be required to arrest and investigate [Zhou Ying]. This was approved. Ning-yuan Subprefecture was originally China's territory. At the beginning of the dynasty, it was subject to the Yun-nan Provincial Administration Commission. At the beginning of the Xuan-de reign (1426-35), Li Li rebelled against the Court and was granted his former land. He had also occupied Ning-yuan Subprefecture together with Lu Subprefecture in Tai-ping Prefecture, Guang-xi. At that time, the officials were careless in their examination and these areas had thus gradually reverted to the yi.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 39, page 0163/64