According to official measurements from the China Earthquake Networks Center (CENC), a magnitude 3.3 earthquake struck Feidong County, Hefei City, Anhui Province at 8:25 a.m. on November 7. The quake’s epicenter was located at latitude 31.97°N and longitude 117.60°E, with a focal depth of 10 kilometers. The average elevation within a 5-kilometer radius of the epicenter is about 34...