Visitors wearing face masks to help protect from the coronavirus gather to take souvenir photo with a decoration for the Beijing Winter Olympics Games on display at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

Volunteers wearing face masks to help protect from the coronavirus chat each others at an information booth for Beijing Winter Olympics Games at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

A man and a child wearing face masks to help protect from the coronavirus take a selfie with a decoration for the Beijing Winter Olympics Games in between of the train parked at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

In this photo released by Xinhua News Agency, residents line up to get a throat swab for the COVID-19 test at a residential area in Fengtai District in Beijing, Sunday, Jan. 23, 2022. People in a Beijing district with some 2 million residents were ordered Sunday to undergo mass coronavirus testing following a series of infections as China tightened anti-disease controls ahead of the Winter Olympics. (Tang Rufeng/Xinhua via AP)

People wearing face masks to help protect from the coronavirus line up to get a swab for the COVID-19 test at a hospital in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

Visitors wearing face masks to help protect from the coronavirus walk by lanterns on display at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

A man and a child wearing face masks to help protect from the coronavirus walk by a lantern decoration on display outside a mall in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

Visitors wearing face masks to help protect from the coronavirus gather to take souvenir photo with a decoration for the Lunar New Year at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

Security personnel wearing face masks to help protect from the coronavirus stand on duty next to a statue on a shopping street in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

A man puts on his face mask to help protect from the coronavirus as he walks by a decoration for the Beijing Winter Olympics Games at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

People wearing face masks to help protect from the coronavirus line up to get a swab for the COVID-19 test at a hospital in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

Family members wearing face masks to help protect from the coronavirus tour Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

In this photo released by Xinhua News Agency, a child gets a throat swab for the COVID-19 test at a residential area in Fengtai District in Beijing, Sunday, Jan. 23, 2022. People in a Beijing district with some 2 million residents were ordered Sunday to undergo mass coronavirus testing following a series of infections as China tightened anti-disease controls ahead of the Winter Olympics. (Tang Rufeng/Xinhua via AP)

Volunteers wearing face masks to help protect from the coronavirus chat with each other at an information booth for the Beijing Winter Olympics Games at Qianmen Street, a popular tourist spot in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)

A man wearing a face mask to help protect against COVID-19 prepares to eat noodles on the street of Wuhan in central China's Hubei Province, Sunday, Jan. 23, 2022. Sunday will mark two years since the city of Wuhan was placed under a 76-day lockdown as China tried to contain the first major outbreak of the coronavirus pandemic. (AP Photo)

A resident wearing a face mask to help protect against COVID-19 walks along a narrow street in Wuhan in central China's Hubei Province, Sunday, Jan. 23, 2022. Sunday will mark two years since the city of Wuhan was placed under a 76-day lockdown as China tried to contain the first major outbreak of the coronavirus pandemic. (AP Photo)

A child puts on her face mask to help protect from the coronavirus next to a lion dancer decoration at a mall in Beijing, Sunday, Jan. 23, 2022. Chinese authorities have called on the public to stay where they are during the Lunar New Year instead of traveling to their hometowns for the year's most important family holiday. (AP Photo/Andy Wong)