When Qin Kai was five years old, his father Qin Liang died in battle. Surrounded by powerful enemies, Qin Boda, the patriarch of the Qin clan, rejected all opinions and abandoned his eldest son Qin Mu, and appointed Qin Kai's younger brother Qin Lie as king. In order to avoid power disputes and protect Qin Kai, Qin Boda arranged for Queen Caiwei to take Qin Kai and Qin Mu away from the capital Pingyang and go to Quanqiu, the ancestral land of the Qin people. A legend about the rise and fall of Qin and the growth of young people began.
