The Shunyi District has entered a coronavirus "wartime state" with tightened personnel flow management and mass testing in progress, executive deputy district chief Zhi Xianwei told reporters.

Zhi said the district activated an emergency response plan, doing epidemiological surveys, source tracing, nucleic acid testing, community management, and environmental disinfection.

Authorities in Shunyi planned to conduct nucleic acid testing for 800,000 people, said Zhi. By Saturday noon, around 120,000 people had received tests.