What is a modular plasterboard ceiling without nails?

1. Does the gypsum board at the cracked part belong to cross joint or straight joint before construction? Solution: Use staggered joints to lap and fix gypsum board during construction. 2. If the cracking part is at the right-angle junction, it is the result of uneven stress. Solution: draw the gypsum board at the right-angle junction into a right-angle shape as a whole, that is to say, there is no joint at the right-angle part, and the joint is on the left. ...