William Lindesay, an Englishman, has been obsessed with the Great Wall in China since he first saw it on the map on the wall when he was 11 years old. In 1987, he traveled the entire length of the Great Wall, alone and on foot--a distance of more than 2,400 kilometers. This journey launched his research on the Great Wall, which has lasted more than two decades. Today, William has already become a well-known Great Wall expert with several published books introducing the Great Wall to the world. In his years of research, what has he discovered about the Great Wall, and what has he done to preserve the wall? Find out more about the development and obstacles of the Great Wall preservation in this program.

Running Time: 30 mins

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