Zhang Qian traveled to the Western Regions.

Zhang Qian sent an envoy to Dayuan and the Yuezhi in order to contact the Yuezhi and defeat the Xiongnu. However, he was captured by the Xiongnu and imprisoned by the Xiongnu for ten years. After marrying a wife and having children, he still longed for the big man and waited for an opportunity to escape. Later he escaped, but the Yueshi had been attacked by the Wusun and the Xiongnu and moved westward. Zhang Qian had no choice but to cross the Gobi Desert, climb the Congling Ice Mountains, pass through Dayuan and Kangju, and wait until the Yueshi's new territory. The Yueshi were now too far away from the Han Dynasty, and they Indulging in peace and having no intention of going eastward, Zhang Qian tried hard for a year but could not get support, so he had to travel south to Daxia. He heard that Daxia (India) could do business with Sichuan, China. On the way back, Zhang Qian changed his route to the South Road, which was also controlled by the Huns at this time. They were captured by the Huns and detained for another year. They only took the opportunity to escape due to civil strife among the Huns. After a hard march, we returned to the Han Dynasty. A hundred people went west and two returned. Although Zhang Qian failed to form an alliance with the Yuezhi to attack the Xiongnu during this mission, it brought China's influence to West Asia for the first time since Qin Shihuang!

Zhang Qian returned home and suggested to Emperor Wu of the Han Dynasty to go straight from Sichuan to the southwest to contact Shendu. So under his leadership, four teams headed southwest. Although they did not find India due to the obstruction of various countries along the way, they discovered Yunnan. Guo, Yelang and others finally completed the development and control of the southwest area of ??Yunnan, Guizhou, Sichuan and Tibet today.

One year before and one after the search for body poison, Zhang Qian went on two expeditions with the army. With his extensive knowledge and familiarity with the Xiongnu, he served as a guide for generals such as Wei Qing and Li Guang, and established a distinguished position. Due to his great achievements, he was eventually named Bowanghou.

Many parts of China's current territory were conquered during the reign of Emperor Wu of the Han Dynasty. Of course, Zhang Qian's contribution was also part of this!