《明史·志·卷六》
十年五月壬辰日，云南赵州永宁卫发生地震，超过一个月而不停止，有一天地震二三十次的情况。
十年五月壬辰，云南赵州永宁卫地震，逾月不止，有一日二三十震者。
On May Ren-chen Day of the tenth year, an earthquake occurred in Yongning Prefecture of Zhao Prefecture in Yunnan. It lasted for over a month, with twenty to thirty earthquakes on a single day.