Extension line of Beijing-Zhangjiakou high-speed railway under construction

Photo taken on Dec. 17, 2017 shows the construction site of Zhengpantai tunnel of an extension line of the Beijing-Zhangjiakou high-speed railway in north China's Hebei Province. The 52-km extension of the Beijing-Zhangjiakou railway to Hebei's Chongli District, where most of the 2022 Olympic skiing events will be held, is expected to be completed by the end of 2019.

Photo taken on Dec. 17, 2017 shows the construction site of Zhengpantai tunnel of an extension line of the Beijing-Zhangjiakou high-speed railway in north China's Hebei Province. The 52-km extension of the Beijing-Zhangjiakou railway to Hebei's Chongli District, where most of the 2022 Olympic skiing events will be held, is expected to be completed by the end of 2019.

Photo taken on Dec. 17, 2017 shows the construction site of Zhengpantai tunnel of an extension line of the Beijing-Zhangjiakou high-speed railway in north China's Hebei Province. The 52-km extension of the Beijing-Zhangjiakou railway to Hebei's Chongli District, where most of the 2022 Olympic skiing events will be held, is expected to be completed by the end of 2019.