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Medical staff carry a "patient" onto a helicopter during an air rescue drill in Shenzhen, south China's Guangdong Province, May 17, 2018. (Xinhua/Mao Siqian)
Medical staff carry a "patient" onto a helicopter during an air rescue drill in Shenzhen, south China's Guangdong Province, May 17, 2018. (Xinhua/Mao Siqian)