Workers in protective suits stand at an entrance to a university's residential area under lockdown following the coronavirus disease (COVID-19) outbreak in Xian, Shaanxi province, China December 20, 2021. Picture taken December 20, 2021. China Daily via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. Photo: CHINA DAILY/REUTERS
FILE PHOTO: A medical worker in protective suit collects a swab sample from a man for nucleic acid testing at a residential compound, during another round of mass testing following the coronavirus disease (COVID-19) outbreak in Xian, Shaanxi province, China December 27, 2021. cnsphoto via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT./File Photo Photo: Stringer/REUTERS
Police and staff members wearing protective gear inspect the documents of a traveller at an entrance to a railway station following travel restrictions to curb the spread of the coronavirus disease (COVID-19), in Xian, Shaanxi province, China December 23, 2021. Picture taken December 23, 2021. China Daily via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. Photo: CHINA DAILY/REUTERS
Medical workers in protective suits work inside a makeshift nucleic acid testing laboratory set up at a convention centre following the coronavirus disease (COVID-19) outbreak in Xian, Shaanxi province, China December 22, 2021. Picture taken December 22, 2021. cnsphoto via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. Photo: Stringer/REUTERS
People line up in the snow for nucleic acid testing at a residential compound under lockdown following the coronavirus disease (COVID-19) outbreak in Yanta district of Xian, Shaanxi province, China December 25, 2021. Picture taken December 25, 2021. cnsphoto via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. Photo: Stringer/REUTERS
A rider travels on an empty road following lockdown measures to curb the spread of the coronavirus disease (COVID-19) in Xian, Shaanxi province, China December 26, 2021. Picture taken December 26, 2021. cnsphoto via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. Photo: Stringer/REUTERS
People practise social distancing as they line up at a nucleic acid testing site during a mass testing following the coronavirus disease (COVID-19) outbreak in Xian, Shaanxi province, China December 21, 2021. Picture taken December 21, 2021. cnsphoto via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA Photo: Stringer/REUTERS
