Aerial photo taken on Sept 4, 2018 shows a photovoltaic power plant in Loufan county, Taiyuan city, North China’s Shanxi province. In recent years, the county has vigorously developed and utilized solar energy by building photovoltaic power plants on barren mountains. [Photo/Xinhua]

Aerial photo taken on Sept 4, 2018 shows a photovoltaic power plant in Loufan county, Taiyuan city, North China’s Shanxi province. In recent years, the county has vigorously developed and utilized solar energy by building photovoltaic power plants on barren mountains. [Photo/Xinhua]

Aerial photo taken on Sept 4, 2018 shows a photovoltaic power plant in Loufan county, Taiyuan city, North China’s Shanxi province. In recent years, the county has vigorously developed and utilized solar energy by building photovoltaic power plants on barren mountains. [Photo/Xinhua]