What does the sentence "ants move the snake gallery, it will rain heavily tomorrow" mean?

The so-called snake gallery, everyone's explanation is that when it rains, snakes will take a shortcut back to the cave, usually avoiding people. It's going to rain now, so it's too late to avoid people before it rains.

Some people think that this behavior of ants is related to rain, and that ants can predict the humidity of the air. When they feel too wet, they know it's going to rain, so they must move to a higher and safer place. However, there is still no conclusive scientific evidence to prove this view.

Ants predict the weather by moving. Once it rains, they move one place at a time. If they move lower, it means less rainfall. If you go higher, it indicates that it will rain more. When ants block the entrance to the nest, it indicates that there will be heavy rain. This is because ants are very sensitive to changes in air pressure and humidity. Once they feel that it is going to rain heavily, they will block the entrance of the nest to prevent rainwater from infiltrating and ensure their lives. When they move, they sometimes move from east to west and sometimes from west to east, which tells us where they will move. However, if it only rains in Mao Mao, it is difficult for ants to observe it.