It's a Big Deal to Marry a Daughter in Lieu. the Landlord Won't Withdraw from This Marriage.

An ancient book that contains shocking secrets, and a mysterious disappearance that happened many years ago bring together people who have never crossed paths. First encounter with the black market— She is in danger, and he is being hunted with blood all over his body. "Save me..." "I've never been nosy." Goodbye - She is the unfavored substitute daughter of the Nan family; He is the eldest grandson of the Lou family who will not live long; The two collided by mistake and were involved in each other's conspiracy vortex, and finally discovered that the other party was acting! "A master of the black market, the daughter of Nan's family, the master's daughter, the mysterious successor of ancient medicine... Madam, which one is you?" "Each other." The world's richest man, who kills people without blinking an eye, has pretended to be incompetent for so long and pretended she didn't know?