The fictional Daqi Dynasty (similar to a mixture of Tang and Song Dynasties) appeared to be peaceful and peaceful, but in reality the imperial power was on the sidelines (the Queen Mother listened to politics behind the curtain), and the gentry and the eunuch group were fighting openly and secretly. The dynasty believed in the "Four Ancient Gods" (Qinglong, White Tiger, Suzaku, and Xuanwu), and established the Imperial Heavenly Supervisor to be in charge of sacrifices, astrology, and the calendar. It was an official institution that connected "human beings and gods."