How to say "厦人自知理亏" (shà rén zì zhī lǐ kuī) in Chinese dialogue

“the people's fighting spirit.”

“[When two states go to war, one is bound to suffer.] so they sent someone with a peace treaty. [Prolonged war is no blessing to a state. I seek terms with the Yan State.] [Let's set aside old grievances, forge an alliance, and keep the peace.] [I hereby draft this pact as a pledge of good faith and trust.]”