Xi’an in China’s northern Shaanxi province is under a Covid-19 lockdown.
STR/AFP via Getty Images
As Omicron cases soar in the U.S., policy makers are following a different playbook than March 2020. That is not the case in China, where a strict zero-tolerance policy is putting cities into lockdown and creating the risk of a rippling effect through supply chains—and eventually the global economy.
In Xi’an, a northwest city bigger than New York City with about 13 million people, restrictions are leading to concerns about food…