It turns out that the wall painting is a woman who wants to repaint the wall, paste wallpaper and use it to remove the wall painting? Or just brush it? Will look at feng shui's answer

Dig out the wall painting, if you want to repaint the wall, you must knock off all the white latex paint and putty powder on the original wall and repaint it, which is better than brushing it directly on the wall. If you brush directly on the wall for a long time, the newly painted wall will be unstable and prone to peeling. After the original wall is completely removed, brush two or three layers of putty powder (depending on the flatness of the wall). You don't need to brush latex paint, you can paste wallpaper by brushing a layer of wallpaper basement membrane. I hope I can help you. . . .