Introduction
In the spring of 1941, the Shanghai Concession was peaceful on the surface, but secretly all forces had turned it into a battlefield without gunpowder. The Japanese military secret service "Mei Agency" stepped up its infiltration, and the overt and covert fighting between the military command, the Central Command, the underground party, and the No. 76 Agent headquarters never stopped. At such a delicate moment, in a small teahouse on Foch Road in the French Concession, a young man who had nothing to do with all this was involved in a spy storm that could change the direction of the war because of a roll of film he obtained by chance.
