A mummy is displayed at Haixi Prefectural Museum of Ethnology in the Mongolian-Tibetan Autonomous Prefecture of Haixi, northwest China's Qinghai Province, June 13, 2017. The mummified remains of a middle-aged man, believed to have walked the earth about 1,700 years ago, has been unearthed on a less frequented section of the ancient Silk Road on the edge of the Qinghai-Tibet Plateau. (Xinhua/Li Yaguang)
