Why do people beat gongs and drums when they are dead?

You can't just play gongs and drums, but also suona and sheng.

There are several functions:

1, attract people with sound, enrich the atmosphere and make things grand. It's the same as playing funeral music.

It is said that it can keep the souls of the dead from running around and attract them.

It is also said that in ancient times, knocking at the door made a loud noise in the hope that the dead could be awakened, and later it gradually evolved into beating gongs and drums.

This is the traditional custom. Accustomed to it, everyone does, that's all.