Chinese surveyors hike toward a higher spot after setting out from a base camp at an altitude of 5,200 meters in southwest China's Tibet Autonomous Region on May 7, 2020. The Chinese measurement team of over 30 surveyors Thursday arrived at a base camp at an altitude of 6,500 meters, as they endeavor to accomplish a mission to remeasure the height of the world's highest mountain. (Photo by Lhagba/Xinhua)
