Mountain coworkers and trekking guides of a Chinese surveyor team collect garbage and wastes at the advance camp at an altitude of 6,500 meters on Mount Qomolangma in southwest China's Tibet Autonomous Region, May 9, 2020. A team of more than 30 Chinese surveyors on Thursday arrived at the advance camp on Mount Qomolangma in an endeavor to accomplish a mission to remeasure the height of the world's highest mountain. (Photo by Tashi Tsering/Xinhua)
