This photo taken on August 5, 2021 shows staff queueing to test for the Covid-19 coronavirus at the gym of a company in Wuhan in China's central Hubei province. (Photo by AFP Photo/China Stringer Network)





Commuters wear protective masks as they walk by a billboard showing some of China's Olympic athletes in the subway on August 6, 2021 in Beijing, China. While cases still remain relatively low compared to many countries, China is battling its worst COVID-19 outbreak in months after workers in the arrivals area at Nanjing International Airport were infected with the highly contagious Delta variant and it has since spread to dozens of cities in at least 18 provinces. (Photo by Kevin Frayer/Getty Images)





A local resident performs traditional horse racing during a celebration marking the 70th anniversary of the founding of Yushu Tibetan Autonomous Prefecture, in northwest China's Qinghai Province, August 4, 2021. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





A woman wearing a mask for protection stands by a sculpture in the park in Shanghai, China, 06 August 2021. The China National Health Commission on 06 August reported 124 new confirmed COVID-19 cases. It is the highest daily count in the current outbreak. Some 80 new locally transmitted cases were reported in Mainland China, of which 61 were recorded in the Jiangsu province the day befor on 05 August. (Photo by Alex Plavevski/EPA/EFE)





A young boy wearing a mask plays in a playground ball pit in a shopping mall on July 31, 2021 in Wuhan, Hubei Province, China. A new round spreading of Covid-19 has started from Nanjing, prompting provinces and cities to take action to fend off the epidemic. With no recorded cases of COVID-19 community transmissions since May 2020, life for residents in Wuhan is gradually returning to normal. (Photo by Getty Images/China Stringer Network)





Commuters wear masks to protect against COVID-19 as they sit on a public bus as it waits to depart during the evening rush hour on August 4, 2021 in Beijing, China. (Photo by Kevin Frayer/Getty Images)





In this photo released by the Yunnan Provincial Command Center for the Safety and Monitoring of North Migrating Asian Elephants, a herd of wandering elephants cross a river using a highway near Yuxi city, Yuanjiang county in southwestern China's Yunnan Province Sunday, August 8, 2021. The 14 elephants of various sizes and ages were guided across the Yuanjiang river in Yunnan province on Sunday night and a path is being opened for them to return to the nature reserve in the Xishuangbanna Dai Autonomous Prefecture. (Photo by Yunnan Provincial Command Center for the Safety and Monitoring of North Migrating Asian Elephants via AP Photo)





A local resident delivers daily necessities to his relative under home quarantine in high-risk area for COVID-19 on August 8, 2021 in Zhangjiajie, Hunan Province of China. (Photo by Yang Huafeng/China News Service via Getty Images)





Two woman pose for a photograph next to a giant desk lamp in front of Victoria Harbour in Hong Kong, China, 10 August 2021. Victoria Harbour is the body of water separating Hong Kong Island in the south from the Kowloon Peninsula to the north. (Photo by Jerome Favre/EPA/EFE)





Food vendors work behind an ice cream fridge with an advertisement featuring Chinese-Canadian pop star Kris Wu in Beijing on Tuesday, August 3, 2021. Wu was arrested Monday, Aug. 16, 2021 on suspicion of rape in a high-profile case that followed accusations the singer had s*x with a 17-year-old while she was drunk and lured young women into sexual relationships. (Photo by Ng Han Guan/AP Photo)





This aerial photo taken on August 10, 2021 shows vehicles damaged by floods in July at a parking lot, some of which will be discarded, in Zhengzhou in China's central Henan province. (Photo by AFP Photo/China Stringer Network)





Taxis drive under neon and LED signs at Yau Ma Tei, in Hong Kong, China on August 8, 2021. (Photo by Tyrone Siu/Reuters)





This photo taken on August 11, 2021 shows a child receiving a nucleic acid test for the Covid-19 coronavirus at a residental area in Wuhan, in China's central Hubei province. (Photo by AFP Photo/China Stringer Network)





Armed police use boat to evacuate residents trapped in floodwater as heavy rain hits central China on August 12, 2021 in Suizhou, Hebei Province of China. (Photo by Xie Ding'an/VCG via Getty Images)





A man wearing a face mask to protect against the spread of COVID-19 walks past a mural depicting traditional opera face makeup in Beijing, Friday, August 13, 2021. (Photo by Mark Schiefelbein/AP Photo)





In this photo released by China's Xinhua News Agency, people shovel debris and mud from a road in Liulin Township of Suixian County in central China's Hubei Province, Friday, August 13, 2021. Flooding in central China continued to cause havoc in both cities and rural areas, with authorities saying Friday that more than 20 people had been killed and another several were missing. (Photo by Wu Zhizun/Xinhua via AP Photo)





Aerial photo taken on August 12, 2021 shows flocks of herons perching on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





Chinese paramilitary police work to evacuate people trapped in a flooded area in Suizhou in central China's Hubei Province, Thursday, August 12, 2021. Flooding in central China continued to cause havoc in both cities and rural areas, with authorities saying Friday that more than 20 people had been killed and another several were missing. (Photo by Chinatopix via AP Photo)





In this photo released by Xinhua News Agency, rescue workers gather at the site of a coal mine accident in Haibei Tibetan Autonomous Prefecture, northwestern China's Qinghai Province, on Saturday, August 14, 2021. A team of 200 Chinese police, emergency workers and experts on Sunday were trying to reach 19 coal miners trapped in the flooded mine in the northwestern Qinghai province. (Photo by Wu Gang/Xinhua via AP Photo)





People wearing face masks to prevent the spread of coronavirus walk on a downtown street in Hong Kong, Tuesday, August 17, 2021. Hong Kong will tighten entry restrictions for travelers arriving from the United States and 14 other countries from Friday, increasing the quarantine period to 21 days. (Photo by Vincent Yu/AP Photo)