Jiehaobianbao on Jindongbei Road, also referred to as the Jinjiehao and the Golden Great Wall, is also a famous soil great wall in Chinese history and an important barrier against the northern tribes. It is 217 kilometers long across the borders of present-day Nianzi Mountain, Gannan and Longjiang counties, and is known as the "Little Great Wall". The Jinjiehao site was announced as the fifth batch of national key cultural relics protection units on June 25, 2001. The Jin Dynasty built a defensive border fort in the northern border area, collectively referred to as the Jinjie trench. The Jinjie Hao Heilongjiang Line starts from Qijiazitun, 8 kilometers away from Nierji Town, Molidawa Daur Autonomous Banner, on the right bank of the Nen River, and has crossed 18 large and small rivers perpendicular to the veins of the Greater Khingan Mountains and more than 50 swamps. . There are four ancient cities, 21 border castles, border gates, and Fengsui along the route. It has been standing in the vast wilderness between the eastern foot of the Daxingan Mountains and the Yinshan Mountains for more than 800 years. It has been called the "Golden Great Wall" and "China The Second Great Wall".