21 thousand or 8 thousand km? What is the real length of the Great Wall of China?

 
21 thousand or 8 thousand km? What is the real length of the Great Wall of China? - China, The great Wall of China, Longpost
21 thousand or 8 thousand km? What is the real length of the Great Wall of China? - China, The great Wall of China, Longpost
21 thousand or 8 thousand km? What is the real length of the Great Wall of China? - China, The great Wall of China, Longpost
21 thousand or 8 thousand km? What is the real length of the Great Wall of China? - China, The great Wall of China, Longpost


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