Zhangjiakou is a city located in the northern part of Hebei Province, China. It is known for its rich history and beautiful landscapes, including mountains and grasslands. The city has a population of over 4 million people and serves as an important transportation hub connecting Beijing and other regions. In recent years, Zhangjiakou gained international attention as one of the co-host cities for the 2022 Winter Olympics. The area is famous for its winter sports facilities and has become a popular destination for skiing and snowboarding enthusiasts. Its elevation and climate make it ideal for winter activities.