Photo shows the Mount Qomolangma base camp in southwest China's Tibet Autonomous Region, May 5, 2020. China has initiated a new round of measurement on the height of Mount Qomolangma, the world's highest peak. The measurement team arrived at the base camp one month ago, making preparation for the measurement planned in May. As an important starting point and rear base for mountaineering, the Mount Qomolangma base camp is equipped with basic living facilities and medical supplies. (Xinhua/Purbu Zhaxi)

A board shows 5G signal is covered at the Mount Qomolangma base camp in southwest China's Tibet Autonomous Region, May 3, 2020. China has initiated a new round of measurement on the height of Mount Qomolangma, the world's highest peak. The measurement team arrived at the base camp one month ago, making preparation for the measurement planned in May. As an important starting point and rear base for mountaineering, the Mount Qomolangma base camp is equipped with basic living facilities and medical supplies. (Xinhua/Purbu Zhaxi)

Photo shows toilets at the Mount Qomolangma base camp in southwest China's Tibet Autonomous Region, May 3, 2020. China has initiated a new round of measurement on the height of Mount Qomolangma, the world's highest peak. The measurement team arrived at the base camp one month ago, making preparation for the measurement planned in May. As an important starting point and rear base for mountaineering, the Mount Qomolangma base camp is equipped with basic living facilities and medical supplies. (Xinhua/Jigme Dorje)

A man exercises at the Mount Qomolangma base camp in southwest China's Tibet Autonomous Region, May 1, 2020. China has initiated a new round of measurement on the height of Mount Qomolangma, the world's highest peak. The measurement team arrived at the base camp one month ago, making preparation for the measurement planned in May. As an important starting point and rear base for mountaineering, the Mount Qomolangma base camp is equipped with basic living facilities and medical supplies. (Xinhua/Jigme Dorje)

Photo shows a road to the Mount Qomolangma base camp in southwest China's Tibet Autonomous Region, April 26, 2020. China has initiated a new round of measurement on the height of Mount Qomolangma, the world's highest peak. The measurement team arrived at the base camp one month ago, making preparation for the measurement planned in May. As an important starting point and rear base for mountaineering, the Mount Qomolangma base camp is equipped with basic living facilities and medical supplies. (Xinhua/Purbu Zhaxi)

Tents are covered with snow at the Mount Qomolangma base camp in southwest China's Tibet Autonomous Region, May 3, 2020. China has initiated a new round of measurement on the height of Mount Qomolangma, the world's highest peak. The measurement team arrived at the base camp one month ago, making preparation for the measurement planned in May. As an important starting point and rear base for mountaineering, the Mount Qomolangma base camp is equipped with basic living facilities and medical supplies. (Xinhua/Purbu Zhaxi)