Yong-le: Year 4, Month 6, Day 7
22 Jun 1406
The Vice Commissioner-in-chief Han Guan, grand defender of Guang-xi, and the Chief Minister of the Court of Judicial Review Chen Qia, were ordered to select 30,000 native soldiers from the various native-official offices in Guang-xi and to have them assemble in Tai-ping Prefecture on the 10th day of the ninth month (21 Oct 1406) to await the expedition. Guan and so on were also ordered to examine the situation among the bandits in Annam.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 11, page 814