Rationalize the solution. It is convenient to have app noise detection software on mobile phones these days.
From 20: 30 in the evening to 7: 30 in the morning, the ultra-quiet fan must be used within the standard xx decibel, otherwise it must be stopped at night.
The detection method is 5 meters away from the fan motor, and the celebration company app can self-check.
If it is reported 1 10 or environmental monitoring, it will be fined 100 yuan (not too much) and ordered to stop. If the celebration company is not present, the lessor will pay in advance. Property security of residential neighborhood committees can dissuade them, and if they don't listen to dissuasion, they can make a report call. The number of reports a year is fined every five days 1000 yuan.
In any case, we should standardize this matter.