“屏障中原,联络西域,襟带万里”。从历史上看,兰州乃至西北地理位置之重要,由来已久。直至晋室东迁、宋社南渡后,政治文化重心移向东南,西北渐不为人所重视,成为荒远贫瘠之地。迨至民国八年(1919),民主革命的先行者孙中山在发表的实业计划中,首倡开发西北之议,曾详拟修筑北方大港、完成西北铁路系统等各种方案,设想将兰州建设成“陆都”。1937年抗战爆发,局势大异,东南半壁河山相继沦陷,人口内 “Barrier Central Plains, contact the Western Regions, lapel with miles.” Historically, Lanzhou and even northwest of the important geographical location, a long time. Until the Jinzhai moved eastward, after the Southern Song Dynasty, the political and cultural center of gravity shifted to the southeast. As the northwest became less prominent, it became a barren land. In 1911, Sun Yat-sen, the forerunner of the democratic revolution, first advocated the proposal of developing the northwestern council and elaborated various proposals on the construction of the northern big port and the completion of the northwestern railway system, and envisaged turning Lanzhou into a “ Lu are ”. The outbreak of the war of resistance in 1937, the situation diverged, southeast half of the mountains and rivers have fallen, within the population