How would you get products to the profitable Roman market if you were a Chinese merchant in the city of Chang'an and what might you bring back?
Trade between the China and the Roman world went through two possible routes, one by sea and the other by land. The Land route is popularly known as the Silk Road and passed either through Central Asia to the black sea ports or through India and Persia. The Sea routes went through the South China Sea then through to the straights of Malacca and the Indian Ocean before finally ending up in Red Sea or Persian Gulf ports.
The Chinese traders would have brought with them silk products and brought back fine Roman glassware and other luxury goods.