What did you say in ancient times about unusual weather conditions?

The ancients generally said that when the sky changes and the sky changes, there will usually be abnormal phenomena. Heavenly change here generally refers to the change of dynasty, because the emperor at that time was called the emperor, so the change of dynasty is called heavenly change. Therefore, natural changes refer to political changes, rather than simple changes in the natural environment. Changes in the sky and strange phenomena are often described in ancient novels. For example, in the familiar "Romance of the Three Kingdoms", Sun Ce, the leader of the Wu Kingdom, suffered frequent strange phenomena after killing Yu Ji, and eventually died himself.

It is a rare weather change in the sky. Half of the ancient legends say that great things will happen if there are visions. Modern science can generally explain these special phenomena