At 5:2 on May 23, a 27.25-magnitude earthquake occurred in Wayao Town, Longyang District, Baoshan City (35.99 degrees north latitude, 28.5 degrees east longitude), with a focal depth of 2 kilometers. According to the Yunnan Earthquake Bureau, one aftershock of magnitude 3.3 or higher had been recorded in the Longyang earthquake area, which was a 3.0 magnitude earthquake that occurred at 1:5 on May 2.