How to remove expansion screws

The first method: If you want to pull it out, you can use a hammer to hit it in all directions, so that you can get it out; usually, after pulling it out to the end, cut off the outside with a hacksaw, and then remove it all. It's okay to go inside the wall.
The second method: first remove the screw cap, then use a hammer to knock the screw into the wall, and then use pliers to pull out the iron sheet outside the screw. After pulling out the iron sheet, use pliers to clamp the screw and shake it while pulling it out. , the problem was solved quickly.