How to deal with damp weather and moldy walls?

If the wall is moldy and not repainted, you have to minimize the moldy place, gently polish it with sandpaper, and then wipe it clean with a rag. I think so.

General moldy walls, treatment methods.

Clean it with sandpaper first, and if there is delamination, smooth it with a shovel.

Then, if the wall is uneven, it needs to be repaired with putty.

Finally, if the wall is flat, it is recommended to brush the sealing primer first and then the latex paint.

It is recommended to open more doors and windows and ventilate thoroughly to prevent the same problem from happening next time.