Constructors continue their work in hot summer in China's Zhejiang

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Zhu Rongjun of Xi'an Railway Engineering Co., Ltd of China Railway Seventh Group works at the construction site of Hangzhou metro line 7 in Hangzhou, capital of east China's Zhejiang Province, July 23, 2019. Constructors continue their work in hot summer to ensure the smooth progress of the project. (Xinhua/Huang Zongzhi)