He Dejun (L) and He Xinglan collect wasted oxygen cylinders at a glacier park of Yulong Snow Mountain in southwest China's Yunnan Province, March 26, 2024. Lyu Haowei and his colleagues are mainly in charge of cleaning up garbage scattered on the cliffs of a glacier park on Yulong Snow Mountain, southwest China's Yunnan Province. Another group workers like He Dejun clean garbage near the boardwalks of the scenic spot.