科研之友
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摘要
<正>The "Silk Road" is a concept originally proposed by the German geographer F. von Richthofen, which refers to China’s access to the West in the Han Dynasty(the West here mainly refers to the southern and western parts of Central Asia and ancient India) dominated by silk trade. Later, this concept continued to change with the development of the times: First, as for the timeline, people realized that in fact before the Han Dynasty, there was already an East-West exchange based on the Central Plains of China, which means it dates back to the prehistoric era, and also extends
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