From the fourth year after Hongxian to the ninth year of the Republic, Nanming Concession, Beiling Xueguan, Xichuan Salt Road, the "Xuanyi Guards" left over after the collapse of the Hongxian monarchy, the "Purge Department" of the Provisional Government of the Republic, and the "Qingping Society" dispatched from the Soviet area, stand side by side. Let's see how the protagonist jumps repeatedly in the cracks.