In this Monday, May 8, 2017 photo released by Xinhua News Agency, people collect garbage at the north slope of the Mount Qomolangma in southwest China's Tibet Autonomous Region. Workers and volunteers collected four tons of garbage from the Chinese north side of Mount Everest in the first five days of a cleanup operation, state media reported Thursday, May 11, 2017. (Photo by Awang Zhaxi/Xinhua via AP Photo)
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