Three minutes ago, Jiang Lan was the most inconspicuous intern in the Military Telecommunications Department. Three minutes later, the traitor publicly identified him as a communist spy, and three guns were pressed against his temples at the same time. But he smiled and tore open his shirt in the interrogation room - the top secret key of the military was tattooed on his chest. Everyone is betting on which side he is from, but only Jiang Lan knows: he is an undercover agent for the Kuomintang, Japanese Special Forces, and the Youth Gang at the same time. When Boss Dai's top-secret order and the Japanese secret service's cherry blossom seal pointed at him at the same time, he dialed the encrypted line with only three beeps: "Everyone is here, codenamed 'Partridge', requesting the ultimate infiltration - I want the entire military command station in Shanghai to pass on false information for me."