Yong-le: Year 15, Month 6, Day 1
14 Jul 1417
In Jiao-zhi, Yong-he County in Jian-chang Prefecture was put under the jurisdiction of that prefecture. Initially, Yong-he County was under the jurisdiction of Kuai Subprefecture. However, the county advised that it was closer to the prefecture than to the subprefecture and thus this change was made.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 13, page 2011