Zheng-tong: Year 14, Month 1, Day 21
13 Feb 1449
The Ding-xi Marquis Jian Gui died. Gui had his origins in Jiang-du County, Zhi-li.... During the Yong-le reign (1403-24), he went on expedition to Jiao-zhi...In the seventh year of the Zheng-tong reign (1442/43), it was ordered that he take on the post of regional commander, again take on the seal of "General for Pacifying the Man" and proceed on expedition against the Lu-chuan man bandit Si Ren-fa in Yun-nan. He attacked and destroyed the bandit's stockades and was subsequently further enfeoffed as the Ding-xi Marquis with a salary of 1,500 shi of grain, and with the fief to be inherited by his male descendants. At this time he died...However, his planning abilities did not match his bravery and the reason he achieved success in Gan-su and Lu-chuan was that the Jing-yuan Earl Wang Ji assisted him.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 3, page 3352/53