The male protagonist - Lin Xiaodao, was originally the UP master of the ghost animal area of the u station. After traveling through time and binding the system, he used the line "Let the Bullets Fly" to taunt the Japanese army during the battle, and carried a handbook of Zaan quotations with him. The heroine - Su Banxia, a doctor of medicine from Yanjing University, underground party liaison officer, a cold-blooded academic master on the surface, but actually a "violent medical fairy" who can defuse landmines with his bare hands.
