中国古代关津的建制,是历代封建统治者出于政治、军事、经济等方面的利害关系而加以设置和厘定的。所谓关津,意即水陆交通要道,也指设于这些地方的官卡。随着历史的发展,原具有较为浓厚的政治、军事色彩的关津,其财政经济的作用变得日趋突出和重要。原先为抑商和为封建国家临时筹办经费以应急而实施的、时有时无的课征关梁通过税,至唐代中期以后渐 The establishment of the ancient Chinese Kwanjin was set and determined by the ancient feudal rulers for their political, military, and economic interests. The so-called Guan Jin, meaning water and land transportation thoroughfare, also refers to the official card located in these places. With the development of history, the financial and economic functions of the original one with a relatively strong political and military color have become increasingly prominent and important. Originally for the suppression of business and for the feudal state to temporarily fund the emergency and implementation, and sometimes no levy Zhenguan Liang pass, until after the middle of the Tang Dynasty gradually