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

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)