How to get rid of the wallpaper stuck on the painted wall?

1. Wet the small piece with a wet cloth first.

Wait for 5 minutes

It doesn't take much effort to scrape it off with a scraper.

For wallpaper that has fallen off, you can gently tear it off from the upturned corner. Hard-to-remove parts can be wiped with sponge or towel dipped in water. If it is a wall covering, it can be removed when it is wet. If it is a wallpaper with more plastic components, it needs to be blown with a hot hair dryer after wiping water to soften the glue, and then it is easier to tear it by hand.