He traveled back in time to the early Tang Dynasty, around the years 621 or 622 of the Zhenguan era.,Before he travelled through time, he was in charge of a case involving the theft of cultural relics. He had some understanding of history and knew that Sun Fugua was demoted to the Ministry of Punishment in the fifth year of Zhenguan due to a wrongful conviction.,The air within a meter of him seemed to be sucked away.。