What can't I do by high-speed rail?

There are too many things that can't be done on the high-speed rail.

You can't talk loudly, the volume of your mobile phone can't be too loud, and children can't run around and fight. One is safety, and the other is affecting others' rest. You can't charge the charging treasure and take off your shoes on the high-speed rail. These are uncivilized behaviors, and there are many more. Don't flush with shit, it's disgusting.