What is the peeling on the wall?

1, the paint layer is empty;

2. When the wall is painted, the indoor humidity is high, which leads to the moisture regain, which leads to the coating of the wall falling off in the later construction.

3. Because the wall is in a humid environment for a long time, for example, there is water on the other side of the wall for a long time, or there is a hole in the wall, and it gets wet after it rains, resulting in peeling of the indoor wall.