Synopsis：During the Republican era, a murder occurred on Baode Road in Shanghai's Zhabei District. Upon confirmation, the victim turned out to be Ma Guangze, head of the Mayuan Chamber of Commerce. For years, the Mayuan Chamber of Commerce had wielded considerable influence in Zhabei, and Ma Guangze was regarded as one of the most promising figures in the business world. His death shattered the district's former tranquility.