Wei Fen earthquake zone. It starts from Xuanhua-Huai 'an Basin and Huailai-Yanqing Basin in Hebei Province in the north, passes Yangyuan Basin, Yuxian Basin, Datong Basin, Ding Xin Basin, Lingqiu Basin, Taiyuan Basin, Linfen Basin and Yuncheng Basin, and reaches Weihe Basin in the south. It is another strong seismic activity zone in eastern China. Shanxi 1303 Hongdong M8.0 earthquake and Shaanxi 1556 hua county M8.0 earthquake both occurred in this area. June1998+1October 65438 Zhangbei M 6.2 earthquake is also near this zone. Since recorded, there have been about 160 earthquakes of magnitude 4.7 or above in this seismic zone. Among them, the earthquake was 7-7.9; There were 2 earthquakes of magnitude 8 or above.