A new-energy bus runs on the road in Lhasa, capital of southwest China's Tibet Autonomous Region, July 6, 2019. 80 new-energy buses were put into operation Saturday in Lhasa so as to reduce gas emissions and improve air quality. (Photos: Xinhua)

People get on a new-energy bus in Lhasa, capital of southwest China's Tibet Autonomous Region, July 6, 2019. 80 new-energy buses were put into operation Saturday in Lhasa so as to reduce gas emissions and improve air quality.