
Chinese surveyors hike toward the advance camp at an altitude of 6,500 meters after setting out from a base camp at an altitude of 5,200 meters at Mount Qomolangma in southwest China's Tibet Autonomous Region on May 7, 2020. (Photo by Lhagba/Xinhua)

Chinese surveyors hike toward the advance camp at an altitude of 6,500 meters after setting out from a base camp at an altitude of 5,200 meters at Mount Qomolangma in southwest China's Tibet Autonomous Region on May 7, 2020. (Photo by Lhagba/Xinhua)