Become a Savage with the Skills of Cultivating Immortals

What? The primitive society tens of thousands of years ago actually had spiritual energy. No wonder Shen Fei tried all the techniques but could not succeed in cultivating immortality. Is this the original problem? At just the right time, Shen Fei successfully reborn into the primitive era with the immortality cultivation technique he just bought from the street stall. Let's see how Shen Fei (Stone Cave) leads a group of primitive people to develop rapidly. ... Shen Fei set up the Immortal Killing Sword Formation on the top of the snow mountain, with a psychic chariot driven by a savage behind him. "You used to laugh at me because I only knew how to drink milk and cultivate immortality." "Now, get ready for the coexistence of science and miracles——" "Neolithic Industrial Revolution!"