Exhibition Hall Introduction: The third floor mainly displays the four major department stores, the pioneers of China's modern department store industry, namely Xianshi Company, Yongan Company, Xinxin Company, and Dahsin Company. Systematically introduces the establishment, operation and development process of the four major department stores. There are architectural models of the four major department stores in Shanghai in the 1920s and 1930s, as well as four scenes: Xianshi Shoe Department, Yongan Fruit Bar, Xinxin Roof Garden and Dahxin Elevator.