Proton and His Sickly Third Prince

[Pure ancient words - Leng Ao, the proton of the enemy country + the coquettish, sick and weak prince + crazy criticism of the sinister male lead + revenge and redemption] In order to protect the peace of his family and the country, the prince of the Northern Kingdom, Xiang Yunchen, voluntarily entered Yan as a pledge. He was already devastated and prepared to live in hiding in the enemy's country, but he happened to meet the third prince Song Youlin who was sick and torn apart. When they first met, Song Youlin was as pale as paper, he coughed up blood and chuckled: "How come the prince of the Northern Kingdom looks less like a living person than me?" Xiang Yunchen looked at him coldly: "If the third prince wants to go faster, I don't mind helping him." But later—— Song Youlin blocked Prince Song Yan's poisonous wine for him, but he himself vomited blood for three days. Xiang Yunchen searched for strange medicines all over the world for him, but all he got in exchange was: "Don't save me, I won't survive this winter." ‌He should have hated the Yan Kingdom, hated the royal family, and hated the sick third prince. ‌ But when Song Youlin coughed up blood in his arms and asked with a smile: "Yun Chen, are you here to kill me, or are you here to love me?" Xiang Yunchen was shocked to realize—— ‌He could no longer tell whether he was a proton who came for revenge or a fool who came to be buried.