在实施长江经济带跨世纪发展战略的过程中，出现了分别以上海、南京、武汉、重庆为核心的综合经济实力较强的四个协作经济圈。但皖、赣两省由于受地理位置和经济基础薄弱的影响，既不属于下游以上海、南京为中心的长江三角洲城市经济圈；也不属于中游以武汉为中心的两湖经济圈 During the implementation of the strategy of trans-century development of the Yangtze River economic belt, there emerged four cooperative economic circles with comprehensive economic strength centered on Shanghai, Nanjing, Wuhan and Chongqing respectively. However, due to the geographical location and weak economic foundation, both Anhui and Jiangxi provinces do not belong to the economic circle of the Yangtze River Delta that is centered on the lower reaches of Shanghai and Nanjing, nor to the two lakes economic circle centered on Wuhan in the middle reaches