Zheng-de: Year 10, Month 5, Day 6
17 Jun 1515
Yun-nan experienced earthquakes continuously for over a month. On some days, there were 20 to 30 shocks. Black vapour swirled like a fog, the ground tore apart, water spurted all around and innumerable walls, government buildings and people's houses were destroyed. The dead numbered in the thousands and the injured several times that. There had never previously been such major changes to the landscape.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 67, page 2500