China is an old ancient country with the Great Wall as the wintness of its long history.The great wall is the treasure of the civilization of china,the legacy of world culture,and also a miracle in the human world.Its span covers eight thousand,eight hundred,fifty-one point eight kilometers,with its height averaging from six meters to seven meters,width averaging from 4 to 5 meters.Besides,China has a lot of other key points of interest.
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