The noise upstairs always interferes with my rest. One day has made me crazy. Should I fight them back?

Personally, I think it is better to communicate privately first. After all, it is a fact that you are neighbors, and it is still "harmony" between neighbors. You will be neighbors upstairs and downstairs in the future. Communicate first if you can communicate. It's best not to turn your face.

If you can't communicate privately, you can ask the property to come forward as a "peacemaker" to mediate. I believe there will always be a way.