Great Wall
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Tech
An extra piece was removed, causing the whole city to have to be rebuilt, the reason why everyone must be “frightened”.
The Great Wall is one of the greatest structures in China, built with the purpose of protecting China from threats…
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Tech
Why is the Great Wall of China “2000 years without falling” even though it is only built of earth and stone? The secret lies in the mortar “stronger than concrete” that the ancients created
The Great Wall is the famous wall of China, also the longest man-made military structure in the world. Thousand-year project…
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