Earthquakes are very common natural disasters for human beings, but they are not taken seriously when the magnitude is small. All high schools and universities have experienced earthquakes and have a sense of shock. At this moment, everyone rushed out of the classroom. At that time, less than a month after the Wenchuan earthquake, I experienced a shocking earthquake, which was very terrible. Fear still exists. Earthquakes are a way for the earth to release energy, and most of them occur at the junction of plates. There are six major plates on the earth: Eurasia plate, Africa plate, America plate, Indian Ocean plate, Antarctic plate and Pacific plate.

China lies on the Eurasian plate. Sichuan is located in the southwest of China, with a special geographical position, and borders the Qinghai-Tibet Plateau in the west. The Qinghai-Tibet Plateau is caused by the collision and compression between the Indian Ocean plate and the Eurasian plate, and the deformed crust itself is unstable. The earth we live in is made up of large and small plates. Earthquake is the energy released by the collision and extrusion of plates and boundaries, which forms a strong sense of earthquake. The geology of Sichuan is hard and the geology of Qinghai-Tibet Plateau is soft. Once the plates collide, the capacity generated between the boundaries will squeeze the crust, and the softer geology will cover the harder geology and move with the direction of crustal movement.

Guizhou is a region with relatively weak seismic activity in history. Although a 6.5-magnitude earthquake occurred in Luodian, Guizhou Province on June 8, 1986/kloc-0 in the Compilation of China Earthquake Historical Materials edited by Xie Yushou and Cai Meibiao, where did the earthquake magnitude detector of that era come from? It can only be inferred from the destruction records at that time. The earthquake with the largest magnitude in China in recent 20 years is likely to be a 4.7 earthquake that occurred in Weining County at 20: 48 pm on March 22, 2009. As for Guiyang.

Since historical records, there has never been an earthquake with a magnitude of more than 4. As for the earthquake below 3.9, whether it happened or not is of little significance. China is a country with frequent earthquakes. Because there are two active seismic zones nearby: the Mediterranean-Himalayan seismic zone and the Pacific Rim seismic zone, this is why most earthquakes in China occur in the southwest and southeast coastal areas. Most earthquakes in China are concentrated in Taiwan Province Province, northwest, southwest, north China, southeast coastal areas and 23 seismic zones.