I'm just making a suggestion Training schools generally have more people coming and going. If you use wallpaper, there are two discomforts, one is that the material is expensive, and the other is that it is slightly damaged (because there are many people) and difficult to repair. With paint, the grade is not up, and there is no texture. The use of latex paint is low in environmental protection cost and easy to repair. As for the color, under normal circumstances, it is dark and gorgeous, giving people a dull feeling and easily distracting. Because it is a training school, it is best to use light color, light blue, light beige or white.