Aerial photo shows workers working at the construction site of the Huangzhuang Apartment COVID-19 quarantine center in Shijiazhuang, north China's Hebei Province, Jan. 19, 2021. With 606 quarantine rooms and supporting facilities delivered on Tuesday, the construction of the Huangzhuang Apartment COVID-19 quarantine center in Shijiazhuang is about to be completed. Close contacts and sub-close contacts of confirmed COVID-19 patients will be placed under medical observation in the new center with a total of 4,156 rooms. (Xinhua/Yang Shiyao)
