The edges of the bathroom ceiling are sagging

I have a good way to do this, first remove the inner board that is close to it, then glue it with glass, and finally use foam to plug it through the board taken from the inside, and press the edge of the upper board on the side to be OK.

This is to hang karma, take off the door and add a pad.

First clean up the materials around the floor drain, and then re-use the new white cement water to make it viscous, fill it, and flatten it to dry.

Is it a magnesium alloy door? See if it's a hinge problem - whether the hinge has amplitude (shake the door, whether the hinge has a gap). If not, place a wooden stick between the door frame and the high point of the door, and use the stick to pull the door in when you close it. >>>More

1.Do you see if the floor drain is waiting loosely? See if you can still take it off? I can remove the cement mortar and fix it again. 2.If there is water leakage around the light, you can put it away with real porcelain glue.