Two swans swim in the Ulansuhai Nur in Bayannur, north China's Inner Mongolia Autonomous Region, May 11, 2018. Each year, around six million wild birds dwell in the wetland region due to its habitable environment. (Xinhua/Liu Lei)
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Two swans swim in the Ulansuhai Nur in Bayannur, north China's Inner Mongolia Autonomous Region, May 11, 2018. Each year, around six million wild birds dwell in the wetland region due to its habitable environment. (Xinhua/Liu Lei)
