The high-speed railway line connecting Beijing and Zhangjiakou in north China's Hebei Province starts service on Monday. The railway line is a major project for the 2022 Olympic and Paralympic Winter Games. It will reduce travel time between Beijing and Zhangjiakou, the co-host city of the 2022 Olympics, from over three hours to 47 minutes. The railway is 174 km long, with a maximum design speed of 350 kph.