In the interrogation room of the Puppet Manchukuo Gendarmerie, the traitor is exchanging underground party secret codes for his life. Gu Xuankun sat outside the monitoring room, his brain analyzing the three-layer intelligence network in seconds - the trap set by Matsumoto Koichi, the film hidden under Kawashima Yukiho's cheongsam, and the nail code left by Bai Xiuqin when she was arrested. In the 724th micro-expression analysis, he pressed the detonator. Thirty miles away, a series of explosions occurred at the Japanese arsenal, and the flames illuminated half of the snowfield. Kawashima Yukiho's disguise collapsed instantly, and the secret that she was sold to the Japanese at the age of seven came out calmly from this Chinese man's mouth. "Please." Gu Xuangkun pushed over the interrogation transcript, "Your choice determines the survival of the five thousand Japanese troops in Dongning Fortress." Tonight, he wanted to let the Kwantung Army understand that offending the Chinese intelligence brain would lead to death.