Tell me about the origin of the "Silk Road"

The Silk Road was an ancient passage across Asia and Europe. Its starting point is generally considered to be Chang 'an (now Xi 'an), but in fact it changes with the change of political center in dynasties. Chang 'an (now Xi 'an), Mang Luoyang, Pingcheng (now Datong), Bianliang (now Kaifeng) and Dadu Beijing have successively started the Silk Road. Extending westward to Rome. Among the goods traded through this long road, silk produced in China is the most representative, hence the name "Silk Road". The Silk Road is not only a commercial avenue for exchanging needed goods between Asia and Europe in ancient times, but also a road of friendship to promote friendly exchanges between Asian and European countries and China and to communicate eastern and western cultures. Some famous figures in history, such as Zhang Qian, who sent a mission to the Western Regions, Ban Chao, who joined the army, and Xuanzang, who learned from the West, all have stories related to this road.

Since Zhang Qian was introduced to the western regions, the commercial exchanges between China and Central Asia and Europe have increased rapidly. Through this avenue that runs through Asia and Europe, China's silk, silk, silk, satin, silk and other silk products are continuously transported to Central Asia and Europe. Therefore, the Greeks and Romans called China the Cyrus country and China the Cyrus people. The so-called "Cyrus" means "silk".