A worker works at the construction site of Joy City building complex in Wuhan, central China's Hubei Province, April 28, 2020. Over 800 workers from China Construction Third Engineering Bureau Co., Ltd. are busy with the construction work of the building complex. Most of them participated in the construction of the Huoshenshan and Leishenshan hospitals in Wuhan and have undergone a 14-day quarantine before they resumed to work. (Xinhua/Xiao Yijiu)
