Around the turn of the 16th century, this structure was split into Inner and Outer Lines, each featuring three key passes.
Around the turn of the 16th century, this structure was split into Inner and Outer Lines, each featuring three key passes. The predecessors to this were ordered destroyed following the Warring States period. In later years, beacons, towers and forts were built with a fixed distance of a number of li. The longest section of this stretches from Mount Hu to Jiayu [JYAH-yoo] Pass. Name this series of bulwarks stretching across China and Mongolia.
Around the turn of the 16th century, this structure was split into Inner and Outer Lines, each featuring three key passes.
Great Wall of China (accept Wanli Changcheng or 10,000-Li Long Wall)