Is there a light sign painted on the door or something?

There is a certain order between painting and installing lamps. Generally, latex paint should be brushed first, and lamps can be installed only after the wall paint is completely allowed to stand and dry.

Only in this way can we ensure that the lamps will not scratch the wet wall paint, and when installing the lamps, we must wear gloves to prevent the lamps from rubbing against the wall during installation.