Yong-le: Year 4, Month 4, Day 11
29 Apr 1406
The Assistant Commissioner-in-chief Huang Zhong, grand defender of Guang-xi, and others, memorialized in regard to the attack on and killing of Chen Tian-ping by Hu Di of Annam. The Emperor was greatly angered and spoke to the Cheng-guo Duke Zhu Neng, saying: "The crimes of that contemptible, despicable wretch mount to Heaven. Yet still he has dared to plot this treacherous ambush and act recklessly and brutally like this. I promoted sincerity and tolerance and still he deceives me! If he is not to be punished, then what is the use of maintaining troops! Neng and the others all said: "The rebellious bandit has committed a great crime. Heaven and Earth cannot tolerate this. We humbly request that the Emperor raise troops and exterminate him at one blow." Consequently, the Emperor decided to raise an army.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 10, page 791