Ruins of the Jin Dynasty Frontier Wall

　　The Jin Dynasty Frontier Wall is also known as the "Old Border," "Great Wall," "Old Fort," or "Wanyan's Great Wall."

　　In Ganggangtun, Xinlin Town, northeastern Jalaid Banner, there is an earthen trench that runs roughly from east to west, serving as the border between the Xing'an League and Hulunbuir City. The section of the Jin Dynasty Frontier Wall within Ganggangtun

　　1994

　　was designated as a key cultural relic protection unit of the Inner Mongolia Autonomous Region, and in 2001

　　it was included as part of the overall Jin Dynasty Frontier Wall in the list of national key cultural relic protection units. This trench crosses mountains and rivers, entering Taohemu Sumu in Horqin Right Wing Front Banner, historically referred to as "Helmu Zhala." This section of the Jin Dynasty Frontier Wall is 6.5 kilometers long

　　,

　　2.5 meters

　　high

　　.

　　At each end there is a square fort site with sides measuring 200 meters

　　,

　　with architectural layout and troop deployment that are quite representative.

　　The Jin Dynasty Frontier Wall was initially built during the Tianhui era of Emperor Taizong of Jin (1123–1135 AD), spanning over 5,000 kilometers in total. The wall runs east to west across the entire Xing'an League. On the right bank of the Chaor River in Jalaid Banner, it splits into two branches, with the southern line further dividing into a fork. The three walls enter Horqin Right Wing Front Banner in a rough “川” (river-like) formation, after which one proceeds into Xilin Gol League and two into Tongliao City.