Yong-le: Year 7, Month 10, Day 3
9 Nov 1409
On this day, the Ying-guo Duke Zhang Fu, regional commander of Jiao-zhi, stationed troops at Qing-hua. At that time, the false official Duan Zi-shi (Alt: Duan Zi-gu), who had been sent by Chen Ji-kuo, the bandit leader who wildly claimed to be a grandson of the former king of Annam, had presented a letter to the regional commander, requesting that he be enfeoffed with a title. Fu said: "The sons and grandsons of the Chen line were previously all killed by the Li bandits. We searched for survivors throughout the country, but none remained alive. Now, I have been ordered to punish the bandits. I know no more than this." Following this, he had Duan Zi-shi (Alt: As above) killed and the army was signalled to advance. The Commissioners-in-chief Zhu Rong and Cai Fu were sent forward first with infantry and cavalry, while Fu followed with the boat-borne troops. Previously, the bandits had erected many stakes at each of the river-ports and sea-ports. They then filled these in with earth and stones. Thus, the boats could not be rowed through. At this time, Fu went through the Huang River and the A River to Da-an Sea-port and to Fu-cheng, from where he went to Shen-tou Sea-port. All of these were blocked. Subsequently, they marched 10 days to reach Qing-hua where the water and land forces gathered together. However, Jian Ding had already fled to Yan-zhou and Chen Ji-kuo had gone to Yi-an, while the bandit followers Ruan Shuai, Hu Ju and Deng Jing-yi had all scattered. Thus, at this time, troops were stationed at Qing-hua so as to eradicate the minor bandit gangs.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 12, page 1281