In 20-30s of this century, In the face of aggression, Nankinggovernment ever assumed to depend on northwest for a long period time backside base.

• 20世纪30年代，面对日本帝国主义的入侵和西北的边疆危机，南京政府曾设想依靠西北为长期抗日的后方根据地，并进而带动西北的经济开发。