Passengers in quiet cars must abide by five silence agreements. Which five are they?

The five rules that must be observed are: first, don't make a phone call in the carriage, and leave the carriage with the phone; Second, don't talk loudly in the carriage; Third, take good care of children when taking them out to avoid noise; Fourth, turn the phone to mute or vibrate; Fifth, wear headphones or turn it off when using various electronic devices.