During the Western Han Dynasty, for increasing strategic defence or “do not let the Huns horses cross Yinshan”, and for Protecting the newly opened silk roads, Emperor Hanwu ordered the construction of the nearly 10,000km Han Great Wall. The Han Great Wall was an advanced position and defence line of the Qin Great Wall. It runs from Xinjiang in the west to Liao Dong in the east, through the Mongolian Republic and Inner Mongolia. The Han Dynasty period become the second climax of construction on the Great Wall in Chinese history.
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