Zheng-tong: Year 1, Month 4, Day 6
22 Apr 1436
The Auxiliary Ministry of Works memorialized: "The Che-li Military and Civilian Pacification Superintendency and other places in Yun-nan, as well as the country of Japan, were issued sequential despatch notes, tally slips and reference stub books during the Xuan-de reign (1426-35). Now that there is a new reign title, the regulations require that these should be changed." This was approved.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 22, page 306