Aerial photo taken on Oct. 27, 2019 shows a high-speed train running on the Guanting Lake Bridge section of Beijing-Zhangjiakou high-speed railway in Zhangjiakou, north China's Hebei Province. The construction of each station along the Beijing-Zhangjiakou high-speed railway is to be completed soon, following the operational test of each station. (Xinhua/Yang Shiyao)