Zheng-tong: Year 14, Month 9, Day 8
24 Sep 1449
Chen Fu-zong, a native-official company commander who had come to allegiance from Jiao-zhi, advised: "Elephants should be selected and trained and war saddles and war armour should be manufactured for them. I am willing to lead a force mounted on elephants to smash the bandit's ranks." It was ordered that this suggestion be sent to the Wu-qing Earl Shi Heng for examination.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 30, page 3573