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A staff member drives a tractor to transport materials for sand barriers in Kumtag Desert in Kazak Autonomous County of Aksay, northwest China's Gansu Province, Dec. 13, 2025. Covering a total area of 222,000 mu (14,800 hectares), a water conservation, ecological protection and restoration project is underway here, with sub-projects including sand fixation and afforestation. (Photo by Gao Hongshan/Xinhua)
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