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Wild birds frolic in the Barkol Lake in the Kazak Autonomous County of Barkol, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Zhao Ge)

Wild birds frolic in the Barkol Lake in the Kazak Autonomous County of Barkol, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Zhao Ge)