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A man walks on a road inside the Mingtepa ancient city in Andijan of Uzbekistan, Aug. 6, 2019. The Ferghana Valley on the west of the Pamirs, one of the most densely populated regions of Central Asia, known for the precious Ferghana horse breed and a key hub on the ancient Silk Road, has been attracting scientists and researchers from around the world for decades. In 2012, a joint international archaeological expedition of Chinese and Uzbek scientists started excavating the ancient settlement of Mingtepa, a "living fossil" of the Silk Road dating back to 2,000 years ago, in Uzbekistan's Andijan region in the southeast of the Ferghana Valley. (Xinhua/Cai Guodong)