What's the geomantic saying on the wall after rain?

There is no scientific basis for the geomantic theory that the wall falls down after rain. We should look at this problem from a scientific point of view.

Geomantic omen refers to situations that have a bad influence on the social atmosphere, such as residential bases and cemeteries.

Therefore, feng shui said that the wall does not exist after the rain. We should believe in science and don't believe and spread things without scientific basis easily.