唐宋以后,长江流域便是中国经济发展较快的主要区域,对各个时期的全国经济发展有着举足轻重的作用和地位。但是,封建专制统治和中国传统的陈规陋习,使得这一地区优越的经济自然条件未能得到充分的利用和开发,其经济不能得到正常的发展。时至二十世纪初期,除少数通商口岸及其附近地区外,这一广大区域的社会经济基本上仍滞留在中世纪状态,与欧美资本主义国 After the Tang and Song dynasties, the Yangtze River basin was the main area where China’s economy developed rapidly and played an important role and position in the national economic development in all periods. However, the feudal autocratic rule and the traditional Chinese traditional bad habits made the excellent economic and natural conditions of this region not fully utilized and exploited, and its economy could not be developed normally. As of the beginning of the twentieth century, with the exception of a few ports of trade and its vicinity, the social economy in this vast region still lags behind in the Middle Ages basically. With the cooperation of the European and American capitalist countries