Xuan-de: Year 8, Month 9, Day 21
2 Nov 1433
In Yun-nan, two police offices were established at He-di in Lin-an Prefecture and at Bo-meng in Wei-yuan Subprefecture. Previously, the Kui-rong Chief's Office in Lin-an Prefecture memorialized: "An official ferry has been established at He-di since the Hong-wu reign (1368-98), to facilitate movement to and fro, and a road connects us with the Che-li and Ba-bai Chief's Offices. In recent years, military personnel and civilians have fled beyond the borders, falsely claimed that they were envoys and forced people to take them across, often resulting in deaths. Also, at Lu River robbers frequently appear and engage in pillage. The yi people are not at peace. It is requested that a police office be established and that Yuan Yu, the son of the deceased Local Commander Yuan Kai, be appointed as police officer." Wei-yuan Subprefecture also memorialized; "Our territory adjoins Che-li and other pacification superintendencies and we are often pillaged by bandits who are tolerated by the native officials. Bo-meng is a strategic place. It is requested that a police office be established there and that the Local Commander Liu Xi be appointed as police officer." The Emperor had subsequently ordered that the three offices in Yun-nan conduct an investigation. At this time, they memorialized that the requests were appropriate. Accordingly, it was ordered that the police offices be established and that Yu and so on be appointed as police officers.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 21, page 2365