What strange disaster happened in Ningxia a hundred years ago, and many strange things happened?

A hundred years ago, a strange disaster happened in Ningxia, which lasted for half a year, and then many strange things appeared one after another. The earthquake brought untold harm to the local people, and the survivors were still scared when they mentioned it later. The earthquake happened in the middle of the night and lasted for half a year, which is relatively rare in earthquake disasters. When the earthquake happened, many people were busy with their own affairs, some were sleeping, some were watching plays in caves, and no one noticed the disaster. However, some domestic animals, such as dogs, cats and chickens, began to be restless. They looked scared and ran around, but people didn't take it seriously. People didn't understand the seriousness of the matter until they heard a loud noise. First there was a loud noise like an explosion, then the house collapsed and the people in the cave were buried. This is not the most terrible. The most terrible thing is the time when the earthquake happened. The earthquake, also known as the global earthquake, lasted for half a year and completely disrupted people's lives. Only a few people in each village are lucky enough to survive, and they have to live alone. The survivors talked about the past, as if they were still in the haze of the earthquake and were in great pain. This is the past they don't want to recall.

Great changes have taken place here since the earthquake. It was destroyed and lifeless. Wolves on the mountain came down and ate the bodies of people who died in the earthquake. The ground is covered with blood, which is terrible. According to the local people, there used to be a place where there was no river, but a river was born for no reason, and there was a mountain in a place that was not a mountain. Many strange things happen here one after another, and people are afraid to talk about it. Because of this disaster, the death toll here has exceeded 20 thousand, and people don't want to think about this terrible thing. Whenever you get sick, you should be filled with awe. You don't know which comes first, tomorrow or accident, so it's most important to cherish the present.