Travel bans have been imposed and some transport services halted in Beijing as authorities try to stop the spread of a fresh coronavirus outbreak.
The city has adopted a "wartime" mode on a district level, with 24-hour security checkpoints set up in several neighbourhoods.
Schools have been closed, high-risk people not allowed to leave the city, and outbound taxi and car-hailing services suspended.
It comes as 27 new cases linked to the Zinfadi market have been reported on Monday, taking the tally to 106.
More neighbourhoods have been marked medium-risk areas, bringing the total to 22.
Meanwhile, other Chinese cities have imposed quarantine restrictions on visitors from Beijing.
US Epstein files release highlights Clinton, makes scant reference to Trump
US hits ISIS in Syria with large retaliatory strikes, officials say
Pakistan court hands Imran Khan, wife 17-year jail terms in another graft case
Nine injured in attack in Taipei, media reports
Putin offers no compromise on Ukraine, says EU 'robbery' failed
Bangladesh rocked by unrest after death of student leader
Suspected gunman in Brown University shooting found dead
Ukraine's Zelenskyy meets Poland's Trump-backed president at key moment in war
