Starting from Immortality, Leading the Ancient Apes to Evolve into Humans

Traveling back to more than 2 million years ago, a century when giant beasts were wreaking havoc, Liu Dong took on the important task of leading the evolution of ancient apes. Seeing that his ancestors did not have outstanding size, strength, or speed, they could only exist at the bottom of the food chain. After obtaining the system, he is determined to make mankind the master of the world again. Immortality! Infinite evolution! Prehistoric survival! Build power! Hunter and prey swap identities! Liu Dong almost shortened the human evolution process by half. Many giant beasts: Terrifying two-legged beasts appeared in the rainforest! Cave Man: I always feel like I'm living in his shadow. Stone Civilization: We use stone tools, but he uses bows and arrows!