Love, or Be Loved: Love Song of a Thousand Years of Falling Heroes

It wasn't love at first sight, but it was unforgettable. She is a miracle doctor. But she couldn't save her brother. She had sworn that if she cured the man, she would kill him herself... She must abide by the oath she swore. He is a man who puts revenge first. Faced with the beauty's sincerity, what should he do? He was the emperor, and he tried all means, but in the end he couldn't let that woman stay by his side for the rest of his life.