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A night heron is seen at Lhalu wetland in Lhasa, southwest China's Tibet Autonomous Region, June 26, 2019. Lhalu wetland national nature reserve is known as "the Lung of Lhasa". (Xinhua/Zhang Rufeng)
 
 
A night heron is seen at Lhalu wetland in Lhasa, southwest China's Tibet Autonomous Region, June 26, 2019. Lhalu wetland national nature reserve is known as "the Lung of Lhasa". (Xinhua/Zhang Rufeng)