City-builders stick to posts amid heat wave in Nanjing, China's Jiangsu

A subway constructor wearing a mask works at the subway line 7 construction site in Nanjing, capital of east China's Jiangsu Province, Aug. 16, 2018. Despite the scorching heat wave, city-builders in Nanjing stuck to their posts outdoors to ensure the progress of construction projects. (Xinhua/Li Bo)