Beijing has taken swift measures to battle a resurgence of COVID-19.
Local authorities said 56 new locally transmitted COVID-19 infections had been reported between 3 p.m. Tuesday and 3 p.m. Wednesday.
The new cases were all detected among personnel under closed-off management.
Meanwhile, mass nucleic acid testings were organized in Beijing Tuesday, with over 14.5 million residents sampled.
Staff members have also stepped up efforts for epidemiological investigation and source tracing.
Health authorities say hidden transmission sources in communities still exist and Beijing will use antigen testing as a supplementary measure to screen key risk groups and staff in key industries.
Produced by Xinhua Global Service