Tourists enjoy the distant view of Mount Qomolangma at the Everest Base Camp, Southwest China's Tibet autonomous region, Sept 16, 2015. As the fair weather increases in autumn, lots of tourists were attracted to the Everest Base Camp to enjoy the distant view of Mount Qomolangma at an altitude of 5,200 meters.[Photo/Xinhua]

Photo taken on Sept 16, 2015 shows the scenery of Mount Qomolangma, southwest China's Tibet autonomous region. As the fair weather increases in autumn, lots of tourists were attracted to the Everest Base Camp to enjoy the distant view of Mount Qomolangma at an altitude of 5,200 meters.[Photo/Xinhua]

Photo taken on Sept 16, 2015 shows the scenery of Mount Qomolangma, southwest China's Tibet autonomous region. As the fair weather increases in autumn, lots of tourists were attracted to the Everest Base Camp to enjoy the distant view of Mount Qomolangma at an altitude of 5,200 meters.[Photo/Xinhua]

Foreign tourists pose for photos at the Everest Base Camp, Southwest China's Tibet autonomous region, Sept 16, 2015. As the fair weather increases in autumn, lots of tourists were attracted to the Everest Base Camp to enjoy the distant view of Mount Qomolangma at an altitude of 5,200 meters.[Photo/Xinhua]

Photo taken on Sept 16, 2015 shows the scenery of Mount Qomolangma, Southwest China's Tibet autonomous region. As the fair weather increases in autumn, lots of tourists were attracted to the Everest Base Camp to enjoy the distant view of Mount Qomolangma at an altitude of 5200 meters.[Photo/Xinhua]

Photo taken on Sept 16, 2015 shows the scenery of Mount Qomolangma, Southwest China's Tibet autonomous region. As the fair weather increases in autumn, lots of tourists were attracted to the Everest Base Camp to enjoy the distant view of Mount Qomolangma at an altitude of 5,200 meters.[Photo/Xinhua]