He took away his kingdom and sent him to Mobei.
Ten years later, he returned in despair and encountered the expected insults and bullying.
He swallowed his anger and lived an ignoble life, but in exchange for a sentence: Give him white silk and reward him with poisonous wine.
He just wanted to survive in the deep well, so why should he crush his remaining hope?
Hope shattered.
There is only one sentence left: "May my blood moisten your great country. May my tears fill your territory thousands of miles away. May my heart bind you with a head full of black hair, fade overnight, and mourn forever. May I sacrifice my true feelings and mock your ruthlessness."