My Master Is a Devil

The most beloved disciple of Ren Jiuxiao, the number one demon in the world of cultivation, escaped from the Mountain of Ten Thousand Demons to start a sect and call himself the ancestor. This made the biggest joke in the world of cultivation and made Ren Jiuxiao lose face. The defected apprentice lost his master's care and his Dantian was shattered. When he was dying, he was snatched away by a modern person from time to time. He received the blessing of the system and recruited many disciples...