What is time like?

The waiting person said,

Time is a snail,

It is too slow.

Busy people say,

Time is Pegasus,

It runs too fast.

It is also said that

Time is like a spring.

When you are happy,

It will be shortened;

When sad,

It will stretch.

People often say that

Time is like running water,

Never go back.

But the impression left by time,

everywhere,