A woman wearing a face mask to help protect from the coronavirus takes a selfie with her companion against a Beijing Winter Olympics Mascot and Olympic Tower in Beijing, Wednesday, Jan. 19, 2022. China has locked down parts of Beijing's Haidian district following the detection of three cases, just weeks before the capital is to host the Winter Olympic Games. (AP Photo/Andy Wong)

A Chinese paramilitary policeman wearing a face shield and mask to protect from the coronavirus stands guard at an entrance gate to a barricaded Main Press Center (MPC) for the Winter Olympic Games in Beijing, Wednesday, Jan. 19, 2022. China has locked down parts of Beijing's Haidian district following the detection of three cases, just weeks before the capital is to host the Winter Olympic Games. (AP Photo/Andy Wong)

People wearing face masks to protect from the coronavirus walk by a Beijing Winter Olympics mascot on display near the barricaded Main Press Center (MPC) in Beijing, Wednesday, Jan. 19, 2022. China has locked down parts of Beijing's Haidian district following the detection of three cases, just weeks before the capital is to host the Winter Olympic Games. (AP Photo/Andy Wong)

Women wearing face masks to protect from the coronavirus walk by barricaded area near the Main Press Center (MPC) for the Winter Olympic Games in Beijing, Wednesday, Jan. 19, 2022. China has locked down parts of Beijing's Haidian district following the detection of three cases, just weeks before the capital is to host the Winter Olympic Games. (AP Photo/Andy Wong)

A woman pulls up her face mask to help protect from the coronavirus as she walks by a barricaded area near the Main Press Center (MPC) for the Winter Olympic Games in Beijing, Wednesday, Jan. 19, 2022. China has locked down parts of Beijing's Haidian district following the detection of three cases, just weeks before the capital is to host the Winter Olympic Games. (AP Photo/Andy Wong)

A man gets a throat swab for the COVID-19 test at a mobile coronavirus testing facility a residential area in Beijing, Wednesday, Jan. 19, 2022. With just over two weeks before the opening of the Beijing Winter Olympics, residents of the Chinese capital say they’re disappointed at not being able to attend events because of coronavirus restrictions that have seen parts of the city placed under lockdown. (AP Photo/Andy Wong)

The Big Air Shougang course is illuminated at dusk in Beijing, China, Tuesday, Jan. 11, 2022. The venue will host the big air competition during the upcoming 2022 Beijing Winter Olympics. (AP Photo/Ng Han Guan)

A medical worker sprays disinfectant on COVID-19 test samples collected from people at a mobile coronavirus testing facility a residential area in Beijing, Wednesday, Jan. 19, 2022. With just over two weeks before the opening of the Beijing Winter Olympics, residents of the Chinese capital say they’re disappointed at not being able to attend events because of coronavirus restrictions that have seen parts of the city placed under lockdown. (AP Photo/Andy Wong)

Skaters compete during the Speed Skating China Open, a test event for the 2022 Winter Olympics, at the National Speed Skating Oval in Beijing, Saturday, Oct. 9, 2021. The venue will host speed skating competition at the upcoming 2022 Beijing Winter Olympics. (AP Photo/Mark Schiefelbein)