The Emperor Killed My Whole Family, I Turned into a Demon and Destroyed His Entire Family!

Traveling through the feudal dynasty, everyone was copied and killed at the beginning. Chen Zhen was forced to flee. In times of crisis, open an ancient book handed down from ancestors, From then on, he contracted with the dead souls and opened the door to hell. The souls of hell who once harmed the three realms, The demons and ghosts causing trouble in the world, A desperate man who made a contract with the dead soul... Chen Zhen started as the Demon King of Demon Mountain, I wanted to develop my strength. Led all the demons and ghosts to overthrow the foolish and unscrupulous emperor, But unintentionally it got bigger and bigger, He actually became the biggest demon king causing trouble in the three realms! (There is no heroine in this book, and there are no real heroes or villains)