The sandstorm that people now are frustrated about, is the dusty wind weather phenomenon with a visibility of less than 1000 meters due to the strong wind rolling up a large amount of sand and dust, resulting in air turbidity  It has actually existed in ancient times
It was originally one of the natural forces of shaping land and a project of nature, and has a position in the global ecological balance
The weather phenomenon of sandstorm is a manifestation of natural forces, which has nothing to do with human activities.