In the Fourteenth Year of Zhenguan, I Raised the Deposed Prince into a Holy King

In the fourteenth year of Zhenguan, Lishan hunting ground. Someone traveled through time and saw a cheetah charging at the current prince Li Chengqian. At the critical moment, the system awakens, the magic arrow takes action, and hits the head with one arrow! The one he saved was actually the deposed prince who was deposed due to rebellion in history and had a tragic ending? At this time, Li Chengqian was being pointed at and scolded "Second Emperor Qin" by an official of the East Palace, and he was filled with depression...