Can wires be laid on the wall next to the elevator? Can the wall next to the living room in the elevator be used as a TV wall? Can wires be laid on the wall?

Usually the property management will prohibit it for fear of accidentally punching through the elevator wall during wiring. There are safety risks. If you really want that side to be the background wall. You can stand the bricks up and cut the wall 5cm wide and paint it 6-7cm wide. (50 wire conduits can be pre-buried) without damaging the original wall. In order to increase the tension on the wall. Put some steel nails or steel bars on the elevator wall. (Of course, the cost of cutting new walls will increase. You can also consider using wood to make the TV background, so that the shape protrudes from the wall to facilitate the pre-embedding of wire pipes.