Zhang Qian's mission to the Western Regions has enriched geographical knowledge, broadened geographical horizons and directly promoted material and cultural exchanges between China and the West. The purpose of Zhang Qian's mission to the Western Regions was to unite the countries in the Western Regions to fight against the Xiongnu, enhance mutual understanding, find out the route and strengthen the ties between the Han Dynasty and the Western Regions.

1, promoting cultural exchanges between China and the West;

2. Cooperate with Korea's strategic arrangement at that time;

3. Accelerate the development of the Silk Road;

4. Since then, the western regions have become the traditional forces of China;

5. Strengthened the people's spirit of opening to the outside world.

Extended data:

In the first year of Jianyuan (BC 140), Liu Che, Emperor Wu of the Han Dynasty, ascended the throne, and Zhang Qian served as a Langguan in the palace. In the third year of Jianyuan (BC 138), Emperor Wu of the Han Dynasty recruited envoys to send envoys to the Yue family, hoping to unite the Yue family to attack the Huns. Zhang Qian recruited as an envoy, set out from Chang 'an, was captured by Xiongnu, was trapped for ten years, and then escaped. I went west to Dawan, passed Kangju, arrived at Dayue's home, and then went to Daxia, and stayed for more than a year before coming back.

On his way home, Zhang Qian changed from South Road to Nanshan in an attempt to avoid being discovered by Xiongnu, but he got it from Xiongnu and was detained for more than a year. In the third year of Yuanshuo (BC 126), the Huns were in civil strife, and Zhang Qian took the opportunity to escape to the Han Dynasty, and reported the situation of the western regions in detail to Emperor Wu of the Han Dynasty, who named him a doctor too much. Because of Zhang Qian's prestige in the Western Regions, the envoys of the Han Dynasty later called him Bo Wanghou to win the trust of other countries.