《明史·志·卷六》
四十年二月戊戌日，甘肃山丹卫发生地震，伴有声响，毁坏城堡、房屋。
四十年二月戊戌，甘肃山丹卫地震，有声，坏城堡庐舍。
On the Wuxu day in February of the 40th year, an earthquake occurred in Shandanwei, Gansu, accompanied by sounds that destroyed castles and houses.