Staff members pick hot peppers in a greenhouse in Ningqiang County, northwest China's Shaanxi Province, Sept. 7, 2022. As the headwater region of the Hanjiang River, the largest tributary of the Yangtze River, Ningqiang County has closed ten mines and promoted a series of ecological protection projects for environmental protection in recent years. The county has also promoted the production of agricultural products including tea, fruits, vegetables, etc., managing and transforming ecological resources to green economy. [Photo by Tao Ming/Xinhua]