The Myriad Demon Compendium

In the final years of the Great Yong Dynasty, demonic calamity raged across the land. Lin Shuo, a modern young man, transmigrates into the body of a disgraced heir of a noble family, exiled for crimes. During his exile, he is attacked by demons and, on the brink of death, awakens the ancient treasure, the Myriad Demon Compendium. With it, he can kill a demon and seize its supernatural powers and talents. By subduing a demon king, he can command it to fight for him. The memories of demons form the greatest intelligence network in the world. When the powerful and corrupt oppress him, when false Daoists suppress him, when evil demons wreak havoc, he unfurls the compendium and commands all demons to obey! Holding the Myriad Demon Compendium, he will slay all monsters across the nine provinces, avenge his family's wrongful bloodshed, and stabilize the world! — Description from novelcodex.org