Use Your Heart to Refine the Devil, Ups and Downs. If You Stop Me from Cultivating Immortality, I Will Kill You Without Mercy.

It's hard to seek immortality while in prison, but you can use your heart to refine the ups and downs of the devil! In the prison of the Great Zhou Dynasty, Zhou Sha only wanted to pursue immortality. But after he became immortal, other people, let alone immortality, could not achieve it through cultivation! [Mortal flow, decisive killing, the protagonist's extreme egoism, don't enter if you don't like it]