Daqin was the name of ancient China for the Roman Empire and the Near East.

The record of "Daqin" in the Biography of the Western Regions in the Later Han Dynasty says: "Daqin has a plow, which is located in Haixi and is also a sea of clouds in the west. Thousands of miles, more than 400 cities. There are dozens of servants in small countries. Take stones as the battlefield. Postal kiosks are all made of chalk. There are pines, cypresses, trees and grass. "

In 97 AD, Ban Chao sent his subordinate Gan Ying to Daqin, but he didn't arrive.