We leave cracks on the gypsum board in order to better prevent cracks in the future. Now the ceiling is generally gypsum board, that is, the interior of the panel is mainly gypsum. If there is no seam left, it is impossible to fill the gap in the seam when putty powder is applied. When there is a certain joint treatment, filling the joint with gypsum powder on the grid cloth can better prevent the ceiling from cracking.
Decoration should be both beautiful and practical. In the former, especially some small details, although we don't pay much attention to them, we should make them look better or better to avoid trouble in the future.