Have you ever seen the scene where the sun shoots a light from a dark cloud? If you understand this principle, you can explain the light beam in the night sky.

In the distant town glow, there is a beam phenomenon due to the occlusion of the foreground, but this light is mostly static.

A beam of light that appears upward when the car leans upward in the distance. This kind of beam can move because the car disappears quickly when it moves.

Laser beams used for urban beautification are mostly colored and white, and usually move regularly within a certain range.