Republican-Era Spy War: Code Name Sweet and Sour Fish, the God of Slaughter Arrives

Synopsis: [War against Japan + Brave and clever + One heroine + System + Cunning + Saving the country by indirect means + Deep brotherhood + Smart protagonist + Undercover disguises + High technology + Deep brotherhood + Love of country and family + Passionate] Zhao Jun, an anti-drug police officer, accidentally transmigrates to Shanghai in 1937, the second year of the nationwide War of Resistance against Japan. The fighting on the front lines is extraordinarily fierce. Resistance fighters shed blood and sacrifice their lives, battling the Japanese invaders to the death without fear. But the front lines aren't the only battlefield! The fighting behind the lines is just as intense, especially the clashes between intelligence agents. There may be no flashing blades, but the struggle is even more dangerous and brutal. Zhao Jun becomes a member of the Shanghai Military Statistics Bureau station, with the codename Sweet and Sour Fish. Starting with his infiltration of Headquarters 76, he relies on the Spy War Achievement System to intercept enemy intelligence and assassinate traitors and Japanese officers, time and time again. He not only helps the front lines win victory after victory, but also strikes such terror into the Japanese Special Higher Police, military police, and Plum Agency that they tremble at the thought of him. Watch Zhao Jun rise step by step from a low-level spy to the king of intelligence warfare amid the chaos of a troubled era, until everyone trembles at his name.