明代大边长城是洪武年间为了防御蒙古南下,巩固新建立的明王朝以及北京城的安全而建立的,这段长城蜿蜒在山间和丛林,从早期的独挡一面到后来和明长城主线的配合,一直起着拱卫京畿的作用,它是保卫京师的第一道防线。但是由于史料记载少,并不为人所知。 The Great Wall of the Ming Dynasty was established during the Hongwu period in order to prevent Mongolia from going south and consolidating the newly established Ming Dynasty and the city of Beijing. This Great Wall winds its way between the mountains and the jungle. From the early stage of independence to the main line of the Great Wall The cooperation has been playing the role of Arch Kinki, it is the first line of defense to protect the capital. However, due to small historical records, is not known.