Scenery of Baijitan Nature Reserve in Lingwu City, China's Ningxia

Aerial photo taken on June 21, 2019 shows a contrast area in the desert park in Baijitan Nature Reserve in Lingwu City, northwest China's Ningxia Hui Autonomous Region. For years, local government has taken effective measures in the fight against desertification and has curbed the expansion of the desert. (Xinhua/Feng Kaihua)