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A staff member works at a workshop in China First Heavy Industries in Qiqihar, northeast China's Heilongjiang Province, Aug. 28, 2019. (Xinhua/Wang Jianwei)
 
 
A staff member works at a workshop in China First Heavy Industries in Qiqihar, northeast China's Heilongjiang Province, Aug. 28, 2019. (Xinhua/Wang Jianwei)