What if neighbors disturb the people and make trouble without reason?

In the long run, peace is the best solution, such as buying some gifts to look upstairs and discuss. Actually, it's no big deal. If the other person is well informed, he should stop such behavior. After all, it takes perseverance to keep making noise. Of course, if the other person is stubborn, you can either move or go online. There seems to be a special tool to deal with such people. Of course, it is not recommended to go to this tense step. Everything is more expensive.