It's broken! I was targeted by the villain after the apocalypse

The real young master of a wealthy family, Liu Jinan, awakened on the day he was taken back to the Gu family to recognize his ancestors. It turned out that the world he was in was a book, and the protagonist in the book was a fake young master. In order to win the favor of his parents and brother for the fake young master, he did not hesitate to trade his body with the superpowers to obtain resources, and handed over all the resources to his parents. In the end, he was sold to the sinister and crazy villain Duan Haiping by the Gu family to squeeze out the last bit of value. Until he was forced to death by the Gu family, he never received even the slightest pity from the Gu family. Instead, the feared Duan Haiping hugged his body, his eyes red, exhausted his superpowers to avenge him, and finally died at the hands of the protagonists. Liu Jinan's hands were slow...