There is a section of 44 kilometers in the southwest of Yuzhong County, which is basically well preserved. The Great Wall in Langzhong was originally two sections, a section located in the southwest boundary of Lijia, Yong'an, Jiabeiyan three townships, a total length of 31 kilometers, built in Minghongwu 14 years (1381), for Xu Da, is the main line of Ming Wanli Great Wall - Liaochangcheng