A resident wearing a mask walks past a home with a portrait of Chinese leader Mao Zedong and words “promoting a calendar exhibition” on Tuesday, May 3, 2022, in Beijing. China has stuck to its strict “zero-COVID” approach that restricts travel, mass tests entire cities and sets up sprawling temporary facilities to try to isolate every infected person. (Photo by Ng Han Guan/AP Photo)





A worker wearing personal protective equipment (PPE), carries a metal sheet while installing a barricade around a residential area under lockdown, amid the coronavirus disease (COVID-19) outbreak in Beijing, China, May 4, 2022. (Photo by Carlos Garcia Rawlins/Reuters)





In this photo released by Xinhua News Agency, rescue workers evacuate the 10th survivor pulled alive after being trapped 132 hours from the debris of a self-built residential structure that collapsed in Changsha in central China's Hunan Province on Thursday May 5, 2022. Rescuers in central China have pulled the woman alive from the rubble of a building that partially collapsed almost six days earlier, state media reported Thursday. (Photo by Shen Hong/Xinhua via AP Photo)





People wearing face masks stand in line for COVID-19 tests at a testing site during the second consecutive day of mass testing in Beijing, Wednesday, May 4, 2022. Beijing on Wednesday closed around 10% of the stations in its vast subway system as an additional measure against the spread of coronavirus. (Photo by Mark Schiefelbein/AP Photo)





A worker wearing a protective suit swabs a man's throat for a COVID-19 test at a testing site during the second consecutive day of mass testing in Beijing, Wednesday, May 4, 2022. (Photo by Mark Schiefelbein/AP Photo)





A medical worker in a protective suit collects a swab sample from a resident for nucleic acid testing, outside a closed entrance of a building during lockdown, amid the coronavirus disease (COVID-19) pandemic, in Shanghai, China on May 5, 2022. (Photo by Aly Song/Reuters)





Commuters wearing face masks walk past a closed subway station in the central business district in Beijing, Thursday, May 5, 2022. Hong Kong on Thursday reopened beaches and pools in a relaxation of COVID-19 restrictions, while China's capital Beijing began easing quarantine rules for arrivals from overseas. (Photo by Mark Schiefelbein/AP Photo)





People sit down for lunch in a restaurant in Hong Kong, Thursday , May 5, 2022. (Photo by Kin Cheung/AP Photo)





Commuters wearing face masks wait at an intersection in the central business district in Beijing, Thursday, May 5, 2022. (Photo by Mark Schiefelbein/AP Photo)





A staff member sprays disinfectant to halt the spread of the Covid-19 coronavirus at a primary school on May 6, 2022 in Dongguan, Guangdong Province of China. (Photo by Zhan Youbing/VCG via Getty Images)





A girl wearing a face mask, runs away from a replica of a gorilla at park in Hong Kong, Monday, May 9, 2022. (Photo by Kin Cheung/AP Photo)





A woman and child wearing masks cross a road on Monday, May 9, 2022, in Beijing. (Photo by Ng Han Guan/AP Photo)





A worker wearing personal protective equipment (PPE) disinfects the entrance to a residential area on lockdown due to the recent Covid-19 coronavirus outbreaks in Beijing on May 10, 2022. Millions of people in Beijing stayed home on May 9 as China's capital tries to fend off a Covid-19 outbreak with creeping restrictions on movement. (Photo by Noel Celis/AFP Photo)





A resident and a child look out through gaps in the barriers at a closed residential area during lockdown, amid the coronavirus disease (COVID-19) pandemic, in Shanghai, China, May 10, 2022. (Photo by Aly Song/Reuters)





Visitors look out from a balcony in a quiet mall area with closed retail shops and restaurants only offering takeaway on Tuesday, May 10, 2022, in Beijing. China's capital began another round of three days of mass testing for millions of its residents Tuesday in a bid to prevent an outbreak from growing to Shanghai proportions. (Photo by Ng Han Guan/AP Photo)





A delivery worker wearing a face shield and a mask asks for a direction from a security guard near a shuttered mall in the central business district on Tuesday, May 10, 2022, in Beijing. (Photo by Ng Han Guan/AP Photo)





A delivery man checks his phone, as another moves past a shuttered news stand on a quiet street on Wednesday, May 11, 2022, in Beijing. (Photo by Ng Han Guan/AP Photo)





Workers in protective suits sit at the back of a truck on a street, amid the coronavirus disease (COVID-19) outbreak, in Chaoyang district of Beijing, China on May 11, 2022. (Photo by Martin Pollard/Reuters)





A woman wearing a face mask and a face shield walks down a sidewalk, amid the coronavirus disease (COVID-19) outbreak, in Beijing, China on May 11, 2022. (Photo by Carlos Garcia Rawlins/Reuters)





A worker plays badminton with a colleague next to closed shops in the nearly empty shopping area of the usually bustling Taikoo Li mall after many retail stores were closed to help prevent the spread of COVID-19 on May 10, 2022 in Beijing, China. China is trying to contain a spike in coronavirus cases in the capital Beijing after hundreds of people tested positive for the virus in recent weeks, causing local authorities to initiate mass testing in most districts, close schools and stores, ban gatherings and inside dining in all restaurants, and to lockdown some neighbourhoods in an effort to maintain the country's zero COVID strategy.(Photo by Kevin Frayer/Getty Images)