Zhang Qian's mission to the Western Regions broadened people's horizons at that time, exchanged needed goods, promoted social development and progress, and brought new development elements to Chinese civilization. After he sent envoys, he led envoys from various countries in the western regions to Han; Wu Sun finally married Han and defeated the Xiongnu. Zhang Qian made the first contribution to Hanergy's communication with the western regions. Because of Zhang Qian's prestige in the Western Regions, the envoys of the Han Dynasty later called him "the Prince of Bo" to win the trust of other countries. Zhang Qian has made outstanding contributions to the opening of the Silk Road from China to the Western Regions, which is praised by the world. There were no historical records in western countries at that time, which were reported by Zhang Qian and recorded in Historical Records and Hanshu. They were the original materials on which the history of Central Asia was studied, and they were of great value.