Back to 1937, My Code Name Is a Piao

Lei Xiaojun is an Internet writer, but because of an implanted brain-computer interface chip, he accidentally traveled back to Shanghai in the late 1930s and became an intelligence agent for the military uniform. He shuttled between the military command, the Japanese secret service and the Communist Party, using his multiple identities as a cover to expose Japan's crimes and do a good job in resisting Japan.