In early 1936, the crisis of Japanese imperialism's invasion of North China was serious. In response to the party's call for the establishment of an anti-Japanese national united front, Shanghai's literary and art circles published "Shanghai Culture" on December 12, 1935. Declaration of the World Salvation Movement. Then, on December 28, the Shanghai Cultural Salvation Association was established and issued a second declaration. On January 27, 1936, the Shanghai Film Industry Salvation Association was founded by Ouyang Yuqian, Cai Chusheng and others. In order to adapt to the new situation, literature and art put forward the slogan "national defense literature". Subsequently, the slogans of "National Defense Drama," "National Defense Poetry," and "National Defense Music" were successively put forward in various departments of literature and art, calling on patriotic writers from all walks of life and factions to create works that resisted Japan and saved the nation, and concentrated the literary movement. Join the general anti-Japanese and anti-traitor movement. Subsequently, a large number of various national defense literature and drama works appeared, forming a climax of the national defense literature and art movement.