Pedestrians wear masks as smoke and haze from bushfires in New South Wales blankets the CBD in Sydney, Australia, 10 December 2019. The New South Wales environment department says visibility across east and southwest Sydney was at a “hazardous” level on Tuesday morning, while air quality was poor in southwest Sydney and hazardous in northwest Sydney. (Photo by Steven Saphore/EPA/EFE)

A motorway bridge crosses the icy Hunhe River in Shenyang, China on December 12, 2019. (Photo by Costfoto/Barcroft Media)

Wang Shang-chi, 75, a mobile hats vender, rides his bike on a parking lot next to the Taipei City Zoo on July 9, 2020. (Photo by Sam Yeh/AFP Photo)

VIETNAM: A Vietnamese woman, wearing the traditional “ao dai” long dress, poses for photos along peach blossom flowers ahead of the Vietnamese “Tet” (Lunar New Year festival), in a field in Hanoi, Vietnam, February 2, 2016. (Photo by Reuters/Kham)

Ukrainians wearing traditional costumes sing Kolyadky or Ukrainian Christmas Carols, as a part of Orthodox Christmas in Kiev, Ukraine, Thursday, January 7 2016. Orthodox Christians mark their traditional Christmas Day Jan. 7, with many ancient symbolic events. (Photo by Sergei Chuzavkov/AP Photo)

A Member of the Congress of South African Trade Unions (COSATU) joins other strikers as they take part in a nationwide strike over issues including corruption and job losses outside parliament in Johannesburg, South Africa, October 7, 2020. (Photo by Siphiwe Sibeko/Reuters)

An Iranian woman wearing a face mask walks on a street in Tehran, Iran, 19 October 2020. According to the Iranian Health ministry, Iran reported its highest daily COVID-19 death toll of 337 and 4,251 new infections in past 24 hours as it appears that Iran is in a third wave of COVID-19 outbreak. (Photo by Abedin Taherkenareh/EPA/EFE)

Chinese American actress Bai Ling arrives at the 58th Golden Horse Awards in Taipei, Taiwan, Saturday, November 27, 2021. Bai is a guest at this year's Golden Horse Awards, one of the Chinese-language film industry's biggest annual events. (Photo by Billy Dai/AP Photo)