Beijing warns of 'explosive' COVID outbreak, Shanghai conducts mass testing

China's capital Beijing is experiencing an 'explosive' COVID-19 outbreak connected to a bar, a government spokesman said on Saturday, as the commercial hub, Shanghai,conducted mass testing to contain a jump in cases tied to a hair salon. The warning followed a new tightening of COVID curbs in Beijing since Thursday, with at least two districts closing some entertainment venues after a flare-up in a neighbourhood full of nightlife, shopping and embassies.