On the night when my sister-in-law escaped from the wedding, the sickly concubine Lu Jingtang was pushed into a sedan chair to marry the rumored violent and bloodthirsty demon king. Everyone was waiting for her to die in the demon capital, but no one knew that she was born with the ability to hear people's hearts. On the first day after entering the Demon City, she first killed the evil dowry slave, and then broke through many killings, step by step tearing apart the secrets that had been buried for many years by the Lu family, the Red Feather clan, and the old royal family. The rumored cold-blooded Demon King Yin Jiuyuan also stood behind her every time she raised her sword. The substitute marriage was fake, the chess pieces were fake, and even the life she thought was fake. But this time, she won't be a knife in anyone's hand. She will drag everyone who owes her to hell with her own hands.