If it can't be hung, the gypsum board can't eat nails, and the stress will fall off, and the weight of the projection curtain is also relatively heavy. It is not recommended to hang gypsum board. If possible, it should be fixed on a cement wall or a brick wall. If it can't be fixed, add wooden keel or light steel keel on it, or cry for gypsum board to try to eat nails, and the nails will be easily pulled out when they go in.