Because this type of live broadcast has been banned.

All sleep-aid or hypnosis radio stations and videos have been offline. Douyu and Huya have also banned sleep-aid live broadcasts before, so this type of live broadcast is equivalent to being offline by the entire network.

It is currently unclear why sleep-aid live broadcasts have been banned. Some people say that it is because this kind of live broadcast seems to be "addictive". Many people have become dependent on this type of live broadcast, and even cannot fall asleep without sleep-aid live broadcasts. However,

This statement has yet to be confirmed.