Aerial photo taken on Jan 20 shows a centralized quarantine facility, Huangzhuang Apartments, is being built in Shijiazhuang, the capital of Hebei province. The centralized quarantine facility, with an area of 43.87 hectares, is scheduled to have 4,156 rooms in total. The decision to build the facility came on Jan 12 as Hebei faced an increase of confirmed cases. As of Tuesday, 606 rooms have been delivered. [Photo by Wang Zhuangfei/China Daily]

Aerial photo taken on Jan 20 shows a centralized quarantine facility, Huangzhuang Apartments, is being built in Shijiazhuang, the capital of Hebei province. [Photo by Wang Zhuangfei/China Daily]

Workers are seen at the construction site of a centralized quarantine facility in Shijiazhuang, the capital of Hebei province, Jan 20, 2021. [Photo by Wang Zhuangfei/China Daily]

Workers lay carpets on the first delivered batch of 606 rooms on Jan 21, 2021. [Photo by Wang Zhuangfei/China Daily]

Medical staff members conduct nucleic acid tests for workers at the construction site of a centralized quarantine facility in Shijiazhuang, the capital of Hebei province, Jan 20, 2021. [Photo by Wang Zhuangfei/China Daily]

Workers are seen at the construction site of a centralized quarantine facility in Shijiazhuang, the capital of Hebei province, Jan 20, 2021. [Photo by Wang Zhuangfei/China Daily]