Are there any ancient poems to express your guilt?

A famous poem expressing guilt and regret, "What a floating life owes is dead, and there is no reason to know nine things in the world."

Mermaids shed pearl-like tears in the warm ocean and lantian jade! And a moment that should last forever was disconsolate at that time! -"Jinse" Li Shangyin

Mourning (One of Trilogy) (Yuan Zhen)

You are like Gong's favorite daughter, and it's not going well to marry me, a poor man. You saw me naked in the box. You take off the gold brooch and buy me wine.

You eat your food with wild vegetables, but your food is sweet. You cook with dead branches with leaves.