Do you know "One Belt, One Road"? We also call it the Modern Silk Road. And Zhang Qian was an early traveller of the Ancient Silk Road. He was probably the first1to bring back good information about the central Asian lands to China.
In 139 BC, Han Wudi sent Zhang Qian to the Yue-zhi people to ask for their2against the Xiongnu people who often infringed(侵犯) them.3, on the way to the Western Regions, he was caught by the Xiongnu people. Zhang had to stay with them4about 10 years before he got away. When Zhang finally5the Yue -zhi people in the North India, he was6to find that they didn't want to fight against the Xiongnu people.
On7return journey, Zhang Qian and his men were8again. It was not until 125 BC that they returned to China.9Zhang didn't finish his job, he learned a lot about the places, people, customs and cultures of the 36 kingdoms(王国) in the Western Regions.
Later Han Wudi sent Zhang to West again. Zhang's journey to the West helped10international trade, especially in silk, between China and the West, That's the Ancient Silk Road.