Today, we came to the Helan Mountain Nature Reserve in the Dawukou District of Shizuishan, Ningxia. It used to be a mining area, and the ecological environment was seriously damaged by mining. Now, in order to improve the environment, the government has shut down a large number of mining companies and related polluting enterprises and carried out comprehensive ecological management. After several years of unremitting efforts, the once barren land is gradually becoming green and seeing the scene at hand. Its really moving!