Introduction to the Jin Dynasty Border Fort: The ancient Great Wall in the protected area was built during the Jin Dynasty. Commonly known as the Golden Great Wall, also known as the Jindai Border Fort. The Great Wall enters the nature reserve from Wulan Baiqi Pasture in Balinzuo Banner, from Qiangliangba and Nuhutubaiqi (Nutou Baiqi) Valley in the east, to the northwest across the southern foot of Wulanda Dam and across the Huitong River, and then turns to the west Cross the southern foot of Shijiang Mountain and cross the Baiqi River, then turn southwest and cross the sea to the Riqige River, cross the sea to the north of Riqige Mountain and Haorao Aola Mountain, and enter the Dongbianqiang and Xierzi areas of Linxi County. The Golden Great Wall is more than 50 kilometers long in the nature reserve.