China News Service, September 30. According to the official Weibo news of the China Earthquake Networks Center, China Earthquake Networks officially determined that it was in Yanjin County, Zhaotong City, Yunnan Province at 2:49 on September 30 (28.07 degrees north latitude, 104.17 degrees east longitude) A magnitude 3.5 earthquake occurred with a focal depth of 13 kilometers.