Pigeons fly over the photovoltaic power panels installed on roofs in Turpan, northwest China's Xinjiang Uygur Autonomous Region, Dec. 19, 2019. Since the completion of Turpan's urban micro-grid project at the end of 2013, the photovoltaic power panels installed on 293 residential roofs has an annual generating capacity of about 10 million KWH, serving more than 5,000 households. Turpan's urban micro-grid project is creating a green, low-carbon, harmonious and livable environment for local people. (Xinhua/Zhao Ge)