5知!我来水来了!先水在说:"Great Wall
China's famous Great Wall, also there are many people throughout the year to play.
Great Wall is China's ancient miracle created by the working people. Since Qin Shihuang, the construction of the Great Wall has been a major project. According to records, the emperor used to build the Great Wall nearly 1 million labor force, the country's population of 1 / 20! There was no machinery, all have to rely on human labor, and the working environment is mountains, cliffs Shenhe. One can imagine that a lot of people did not take painstaking labor, it is impossible to complete this enormous project."
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