A train runs on the Hohhot section of Zhangjiakou-Hohhot high speed railway in north China's Inner Mongolia Autonomous Region, Aug. 3, 2017. The first high speed railway in Inner Mongolia Autonomous Region linking Hohhot and Ulanqab started operation on Thursday. The 126-kilometer-long railway is part of the high-speed railway that links Hohhot to Zhangjiakou in Hebei Province, the co-host city of the 2022 Olympic Winter Games. And the travel time between Ulanqab and Hohhot will be shortened to 40 minutes. (Xinhua/Wang Zheng)