Aerial photo taken on Aug. 29, 2018 shows a photovoltaic power plant in Lejiao Village in Wuqiang County of Hengshui City, north China's Hebei Province. In recent years, Hengshui City has encouraged to establish photovoltaic power plants in poverty-stricken villages to help the local poor improve income. (Xinhua/Zhu Xudong) ?