Without sleep ability, people can't stay healthy and concentrate on their work.

Mr Zhu Guangqian once said:

The smarter people are, the more they know how to rest.

Shakespeare wrote in Macbeth:

All living things need sleep regulation.

04 Haruki Murakami said in "1Q84":

It is no good dragging your feet and staying up all night.

It is best to go to bed as soon as it gets dark and get up in the morning with the sun.

There is a cloud in the Book of Changes: A gentleman enters a banquet in one breath.

It means that people should abide by the rules of work and rest and go into the room to rest at night.