Have you ever been to the Great Wall in China?

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There is an old Chinese saying goes like this:" One is not a true man unless he comes to the Great Wall." It was said that the Great Wall is the most time consuming, material consuming, and laboring intensive construction project in human history. It snakes across the China's landscape,rising and falling with the contous of the countryside. It is totally unique. That's what makes it a wonder of the world. Besides, it could be seen from the space clearly. Hi, firends, have ever been to the Great Wall? If you has been to there ? What is your feeling?