Beijing has rapidly increased its COVID-19 testing after a spate of new cases linked to a wholesale market triggered a massive response to contain a potential second wave.
Long queues were seen forming at a testing site on Wednesday.
The city has performed over 350,000 nucleic acid tests in four days, as 137 cases were reported in the last seven days and 31 in the past 24 hours, all purportedly with ties to the Xinfandi market.
Since the new cases were discovered on June 12, the city has reintroduced lockdown measures on several local communities, and has been patrolling movement outside the city limits. Beijing also raised its emergency level from three to two, shut down schools and cancelled over 1,200 flights.
Prior to the most recent outbreak, Beijing had not had a recorded case in nearly two months.