Why is the earthquake frequent in Sichuan? At 16:46 yesterday, Sichuan Shimian County occurred in grade 4.3…

At 18:15 in the evening yesterday, an earthquake of magnitude 4.3 occurred in Anshun Township, Shimian County, Ya’an City, Sichuan Province. The County Earthquake department of the Ya’an City Earthquake Disaster Reduction Bureau and other cities and Chengdu…