Regardless of the renovation of new houses and old houses, it should be carried out in the order of water, electricity, tile, wood and oil, namely: water and electricity renovation, bricklayer's wall building, tile laying, carpentry modeling, oiler's exposure and painting.
The TV background wall is a part of woodworking modeling, which must be modeled before painting.
Woodworking's modeling is not limited to wooden materials, many of which are wooden boxes and gypsum boards.
Painting also has many procedures. First of all, the shape of the background wall should be sorted, polished and filled with putty. Some have to be rubbed, polished and finally painted.
In short, there must be a background wall to have something to draw.