The city of Zhangye, known in ancient times as Ganzhou, boasts a rich history spanning over two millennia. Its emergence and development are inextricably linked to its strategic position on the Silk Road.
Officially, the Zhangye Commandery was established in 104 BC during the reign of Emperor Wu of the Han Dynasty, after his troops expelled the nomadic Xiongnu tribes from the region. The name "Zhangye" is an abbreviation of the phrase "张国臂掖,以通西域", which translates as "extending the arm of the country to connect with the Western Realm." This name symbolized the Han Empire's ambitions to expand its influence westward. In certain historical periods, the city also bore the name Ganzhou.
Zhangye owes its prosperity to its unique geographical location. It is situated in the center of the so-called Hexi Corridor — a narrow passage between the Tibetan Plateau to the south and the Gobi Desert to the north. This corridor was the natural and sole route connecting central China with the western regions and Central Asia, making it a vital artery of the Silk Road. The city served several functions simultaneously:
- Commercial Hub: Zhangye was one of the key trading centers where caravans coming from the east and west would meet.
- Military Outpost: The city served as an important fortress for protecting trade routes and the empire's borders.
- Agricultural Oasis: Thanks to the Heihe River flowing from the Qilian Mountains, a fertile oasis formed in this arid region, providing the city and passing caravans with essential provisions.
As an important point on the Silk Road, Zhangye became a site of active cultural exchange. Not only goods passed through the city, but also ideas, religions, and technologies. It was here that Buddhism began its spread into the central regions of China, as evidenced by the construction of numerous temples. The most famous of these is the Giant Buddha Temple, built in the 11th century, which houses the largest indoor reclining Buddha statue in China. The city is also mentioned in the accounts of the famous Venetian traveler Marco Polo, who is believed to have spent about a year in Ganzhou (Zhangye) during the 13th century.