Spray irrigation is employed in a greenhouse at a poverty-relief industrial park in Lujiagou Township of Dingxi, northwest China's Gansu Province, Sept. 7, 2021. A major water diversion project in Gansu has been completed as the second phase of the project began supplying water Tuesday. The project is expected to alleviate water shortages for more than six million people in the province, local authorities said Tuesday. (Xinhua/Fan Peishen)