sentences:  The film portrays Shanghai, China in the early 1920s.It shows the contrasts between the world of Western expatriates (including Britons, Americans, New Zealanders, Australians, and Danes) who live in the luxurious Shanghai International Settlement, and that of the Shanghainese inhabitants, who spend their days laboring.The events which inspired the film revolve around the Chinese nationalist revolution (1925–27), including the May Thirtieth Movement, and the First United Front of the Chinese Communist Party, and the Nationalists (the Kuomintang), and its collapse in February 1927 when Chiang Kai-shek ordered a purge of the Communists in Shanghai and in other cities held by the revolutionaries.