Return to the Primitive Tribe and Become the Village Chief

Why do others go back to the Tang, Song, Yuan, Ming and Qing dynasties? Why do others become emperors or princes? Why do others have three wives and four concubines or even three palaces and six courtyards? But I only traveled back to a cave and got two long-haired wives? God is so unfair! A modern university personnel management staff went back to the end of the Neolithic Age..