Chen Jian's time travel is different from others: he travels to ancient times, but he only has an animal skin and a stone axe. Starting from the matrilineal clan, develop and continue a civilization. Is it to divide feudalism into a country or unify counties? Farewell to wildness or savage conquest? Is it contention among a hundred schools of thought or unity among all sages? Belief in one god or pan-belief in ancestors? Bloody accumulation of cotton silkworms eating people? The ability to continue to be reborn after death allows him to experience the growth of this civilization with different identities. Tribal members, nobles, slaves, emperors, commoners, scholars, hired workers, captains in the age of great voyages, capitalists in the era of primitive accumulation, squatting in trenches The conscripts of the big trust, the people behind the big trust... What kind of collision and perception will there be with the same head on different buttocks?