During the renovation, the corridor was graffiti. Is there any good way to deal with it?

Find someone to spend a beautiful poster on the corridor wall, and then post it created by the master. No scribbling. If there is a violation, take responsibility. Then press a monitor. Let those who put up small advertisements or scribble be discouraged. If you continue to post, check the monitoring, take a big photo and post it at the door of the community.