【正确答案】The history of the Great wall of China goes back to the 5th century B.C. It was built between the 5th century B.C. and the 16th century B.C. to protect the northern borders of the Chinese Empire. The Great Wall represents a main part of Chinese history, which has a profound influence on China today. So to speak, the Great Wall, in a sense, is history. Most people tend to think that the Great Wall was a product of wars (actually of defense), thus its role ought to have been most closely related to battles. It is, however, not that case. Most of the time during the existence of the Great Wall it was actually peace time rather than war years; the Great Wall, most of the time, was connected to the culture, foreign policies, and economy.