Aerial photo taken on May 27, 2019 shows Shaquanwan demonstration zone in Qingshan Township of Yanchi County, northwest China's Ningxia Hui Autonomous Region. Local ecological environment has been improved, with the forest coverage rate going up from 10% to 50%. Located on the southern edge of the Maowusu Desert, Yanchi County was once poverty-stricken and suffered from desertification. But after years of efforts, the environment there has been restored, and the county has also shaken off poverty. (Xinhua/Ding Hongfa)