Hydrogen-powered buses put into operation in Zhangjiakou, N China's Hebei

Citizens wait in line to get on a hydrogen fuel cell bus in Zhangjiakou, north China's Hebei Province, July 25, 2018. Forty-nine hydrogen fuel cell buses and 25 such intercity buses were introduced to Zhangjiakou and put into operation recently, making it the first city in Heibei to utilize hydrogen-powered buses. (Xinhua/Yang Shiyao)