I am Yan Zhao, who was reborn and traveled back to the Anti-Japanese War era from a first-person perspective. I am not only a detective who can uncover the enemy's hidden secrets from clues, but also a genius who is proficient in military research and development. While investigating potential espionage traps, they broke through technical barriers and upgraded weapons and equipment. They broke through the situation on two fronts in the smoke and protected the rear military and industrial positions, building up the hard-core confidence that belongs to the Chinese people.
