The children upstairs are playing ball at midnight.

This does not constitute a legal sanction, but a public security issue. In fact, if you persuade them through compulsory means such as neighborhood committees, they will not only resist, but also affect neighborhood relations. Besides, listening to you shows that they are not reasonable people, but they can't swallow their own words. Put a note on his door, which euphemistically says, "Everyone, home belongs to everyone, the environment is maintained together, and it is very tiring to work during the day." In the evening, let's create a quiet rest environment together. Please consciously think of your neighbors, and your consciousness can be exchanged for everyone's comfort. " Such things are ironic and not hurtful, and they don't know that the neighbor wrote them. They won't be ashamed and can't come twice at a time. I believe they will always understand that they are wrong. Neighbors still value peace, but they just don't look up. Stiffness is bad. I hope it helps you.