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-- The Silk Road was a network of trade routes from the Far East to the Mediterranean. Its extent stretched from the city of Chang'an (modern day Xi'an) in China to Constantinople. The term Silk Road was coined by Baron Ferdinand von Richthofen, a German geographer.
The Silk Road is actually the collective name given to a number of ancient trade routes linking China and Central Asia. The long and winding part in Northwest China, with a history of more than two thousand years, starts from the old capitals of Luoyang and Xi'an, crosses the Yellow River at Lanzhou, follows the Gansu Corridor, and stretches along the edge of deserts and mountain ranges.