Yong-le: Year 4, Month 10, Day 10
20 Nov 1406
On this day, the forces of the Assistant Commissioner-in-chief Zhu Rong, cavalry commander of the force sent on expedition to punish Annam, and others, came to Ji-ling Pass. The bandits had previously set up stockades and dug numerous ditches, placing bamboo spikes within them. They had also assigned 30,000 troops to guard it. They had guns (火銃), spears and crossbows with which to oppose any attack. The troops who had fled from Ai-liu had retreated to here and said that the force of the Great Army could not be defended against. Therefore the defenders were frightened and apprehensive. Thus, Rong and the others attacked them. Over 60 heads and 10 prisoners were taken. The bandits abandoned their weapons and fled. Then, the troops moved forward for 40 li and attacked a small pass. The bandits lost their determination and fled.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 11, page 872