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An operator descends from a tower crane at the end of his work shift at a construction site in Nanning, south China's Guangxi Zhuang Autonomous Region, July 30, 2019. (Xinhua/Lu Boan)
An operator descends from a tower crane at the end of his work shift at a construction site in Nanning, south China's Guangxi Zhuang Autonomous Region, July 30, 2019. (Xinhua/Lu Boan)