Silk Road is the collective name given to a number of trade routes linking the Chinese and Roman Empire with the North Silk Road and the South Silk Road the most important. The Silk Road served as the main trade link between China and the outside world until Tang Dynasty. Since it opens, Silk Road has attracted so many worldwide travelers to come here explore and experience, even the plodding caravans and the central Asia merchants both became part of history, today the Silk Road tells many stories of ancient times and the changes to society. The thousands of kilometers are filled with cultural heritage and historical sites. The route has become increasingly popular among travelers.