Editor
Chinese cities and provinces have turned to regular mass coronavirus testing, even in the absence of a local Covid-19 outbreak, raising concerns about the economic toll.
The 99 million residents of central Henan Province will be required to take P.C.R. tests every other day by June. In the eastern province of Zhejiang, drivers are tested at highway exits before they can enter. Beijing, which has a small outbreak, is among the cities now…
