Shanghai becomes testing ground for China's 'zero-Covid' strategy
SHANGHAI - China's most populous city tightened the first phase of a two-stage Covid-19 lockdown on Tuesday (March 29), asking some residents to stay indoors unless they are getting tested as the number of new daily cases exceeded 4,400. The financial hub of Shanghai, home to 26 million people, is in its second day of a lockdown as authorities are...