He imprisons Jiang Nianli, the daughter of his enemy, in a secret prison and feeds her with medicine to survive, entangled in love and hate. She coughed up blood and he caressed his wounds, both of them without words. A scrap of paper reveals the secret of her life experience. She needs him to recognize her sister within seven days. He refused to acknowledge her on the seventh night, she passed away with a smile on her face, her name was engraved on his heart, and he fell into the abyss for the rest of his life.