Since Xi’an authorities put the city of 13 million people in northwest China under lockdown on Dec. 23 due to the rapid spread of COVID-19, people have been struggling to get food and supplies. All residents in the city have been put through another round of COVID-19 testing, while 90 residential communities in the city…

Since Xi’an authorities put the city of 13 million people in northwest China under lockdown on Dec. 23 due to the rapid spread of COVID-19, people have been struggling to get food and supplies. All residents in the city have been put through another round of COVID-19 testing, while 90 residential communities in the city…