《明史·志·卷六》
八年三月己亥日，宁夏地震十二次，声如雷鸣，边墙、墩台、房屋倒塌，压伤人民。
八年三月己亥，宁夏地震十二次，声如雷，倾倒边墙、墩台、房屋，压伤人。
On the day of Jihai in March of the eighth year, there were twelve earthquakes in Ningxia. The sound was like thunder, and the Great Wall, watchtowers, and houses collapsed, crushing people.