Shijiazhuang, capital of north China's Hebei Province, is the epicenter of the most recent COVID-19 outbreak. The city is building 3,000 housing units which will be used as quarantine venues for potential infected people who have been in contact with COVID-19 patients, and for medical observation. The construction site is close to the border of Shijiazhuang's Gaocheng District, which is now classified as a high-risk area.