Authorities in China's capital Beijing are racing to contain a Covid-19 outbreak traced to a 24-hour bar, with millions facing mandatory testing and thousands under targeted lockdowns.
The outbreak of nearly 200 cases linked to the city centre Heaven Supermarket Bar, which had just reopened as curbs in Beijing eased last week, highlights how hard it will be for China to make a success of its "zero Covid" policy as much of the rest of the world opts to learn how to live with the virus.
The re-emergence of Covid infections is also raising new concerns about the outlook for the world's second-largest economy. China is only just shaking off a heavy blow from a two-month lockdown of Shanghai, its most populous city and commercial nerve centre, that also roiled global supply chains.
Dine-in service at Beijing restaurants resumed on 6 June after more than a month in which the city of 22 million people enforced various Covid curbs.