The French Concession in Shanghai in 1932. The tram tracks on Xiafei Road are embedded in the sycamore leaves, the leather handbags of the Russian women rub against the glass cabinets of the silk and satin shop, and the copper whistle of the patrol room is always mixed with the tune of the gramophone in the alley of Xiafei Square. At this time, the French Concession was both controlled by foreigners and entrenched by gangs. New and old ideas collided, and forces from all sides were intertwined, providing a complex and tense environment for the suspense story.
