After the outbreak of the Second Sino-Japanese War, Ding Ling and others formed the Northwest Front-Line Service Corps and assumed the important responsibility of wartime mobilization. Amongst all literary and artistic forms, the drama became Ding Ling's preferred form of propaganda because of its "immense power to induce and incite the people." In order to adapt to the performance space, audience seating, and stage conditions, the Northwest Front-Line Service Corps adopted the "improvised" method in creating, rehearsing, and performing, to great results. However, the "improvised" performance also encountered problems with regards to public propaganda, art consumption, and alteration of traditional Chinese theater. In fact, the "improvised" performance touched on the crux of "improvised" art and its deep predicament.