Death is a small matter. What does poetry mean?

It means using poetry to show that death is not a terrible thing.

As follows:

Being in prison is like sitting in a garden, and beheading is like blowing a hat.

Life is a corvee, and death is a rest.

Life is not mine, but life and death will not come.

If life is a dream, all gains and losses, sorrows and joys are illusory.