Beijing-Zhangjiakou high-speed railway to go into service Monday

Photo taken on Dec. 28, 2019 shows an escalator inside the Badaling Changcheng Railway Station in Beijing, capital of China. The high-speed railway line connecting Beijing and Zhangjiakou in north China's Hebei Province will go into service on Monday, China Railway Corporation said Saturday. (Xinhua/Peng Ziyang)