What we know about China’s Great Wall is always changing. The scars along its length tell stories of attacks thwarted and bastions lost, while the structural patterns reflect changes of power and the development of new building construction techniques. How was it built? How did it operate? And how did people live on it?
A decade ago we thought we knew the answers to these questions, but recent discoveries have cast this man-made marvel (twice as long as we once thought) in a whole new light.
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