As various dynasties strove to enlarge their territories and promote foreign trade, produce came into China from the lands to the West in modern Gansu, Xinjiang and Central Asia, as well as from Southeast Asia.
與此同時，各朝代也積極的擴大疆土與國外貿易，西域、回疆、中亞、東南亞的物產因此紛至沓來。