A resident gets tested at a fever clinic in Beijing Monday, June 15, 2020. China's capital was bracing Monday for a resurgence of the coronavirus after more than 100 new cases were reported in recent days in a city that hadn't seen a case of local transmission in more than a month. (Photo by Ng Han Guan/AP Photo)





A Chinese epidemic control worker wears a protective suit and mask while performing a nucleic acid test for COVID-19 on a man who has had contact with the Xinfadi Wholesale Market or someone who has, at a testing center on June 16, 2020 in Beijing, China. Authorities are trying to contain the outbreak linked to the Xinfadi wholesale food market, Beijing's biggest supplier of produce and meat. Several neighborhoods have been locked down and at least two other food markets were closed, as tens of thousands of people are being urged to get tested for COVID-19 at sites set up around the city. The outbreak has triggered fears of a second wave of infection after 56 straight days with no domestically transmitted cases in the capital. More than 8,000 vendors and staff at Xinfadi have already been tested, according to city officials, who are using contact tracing to reach an estimated 200,000 people who have visited the market since May 30. (Photo by Kevin Frayer/Getty Images)





A woman and a child wearing protective face masks to help curb the spread of the new coronavirus walk by people lining up outside a health center to get the nucleic acid test in Beijing, Monday, June 15, 2020. China's capital was bracing Monday for a resurgence of the coronavirus after more than 100 new cases were reported in recent days in a city that hadn't seen a case of local transmission in more than a month. (Photo by Andy Wong/AP Photo)





Buildings are shrouded in advection fog at West Coast New Area on June 15, 2020 in Qingdao, Shandong Province of China. (Photo by Han Jiajun/VCG via Getty Images)





Secondary school students form a human chain near a school campus to protest against a teacher's release over “her political beliefs” as they said, in Hong Kong, China on June 12, 2020. (Photo by Tyrone Siu/Reuters)





A little girl wearing a face mask dances in front of a toy panda at a shopping area in Shanghai, following the coronavirus disease (COVID-19) outbreak, China on June 16, 2020. (Photo by Aly Song/Reuters)





A resident wearing a face mask to curb the spread of the coronavirus walk passes live fish on display at a supermarket in Beijing, Monday, June 15, 2020. (Photo by Ng Han Guan/AP Photo)





Firefighters look for victims in damaged buildings in the aftermath of a tanker truck explosion near a highway in Wenling in eastern China's Zhejiang province early Sunday, June 14, 2020. More than a dozen were killed and others injured after the tanker truck veered off the Shenyang-Haikou Expressway after the explosion. (Photo by Chinatopix via AP Photo)





A resident wearing a mask to curb the spread of the new coronavirus waits near government propaganda with the words “Democracy” and “People first” on the street of Beijing on Thursday, June 18, 2020. China's capital Beijing reported a decline in newly confirmed cases of coronavirus Thursday as the city continued to press stricter measures to contain a new outbreak. (Photo by Ng Han Guan/AP Photo)





A security personnel wearing a protective suit checks the temperature of people entering the Xinfadi market in Beijing on June 14, 2020. The domestic outbreak in China had been brought largely under control through strict lockdowns that were imposed early this year – but a new cluster has been linked to Xinfadi market in south Beijing. (Photo by Noel Celis/AFP Photo)





People wearing face masks to protect against the new coronavirus wait at an intersection near the Xinfadi wholesale food market district in Beijing, Saturday, June 13, 2020. Beijing closed the city's largest wholesale food market Saturday after the discovery of seven cases of the new coronavirus in the previous two days. (Photo by Mark Schiefelbein/AP Photo)





Residents line up to get tested at a coronavirus testing center set up outside a sports facility in Beijing, Tuesday, June 16, 2020. China reported several dozen more coronavirus infections Tuesday as it increased testing and lockdown measures in parts of the capital to control what appeared to be its largest outbreak in more than two months. (Photo by Ng Han Guan/AP Photo)





Passengers wait for their flight at the Beijing Capital Airport terminal 2 in Beijing on Wednesday, June 17, 2020. The Chinese capital on Wednesday canceled more than 60% of commercial flights and raised the alert level amid a new coronavirus outbreak, state-run media reported. (Photo by Ng Han Guan/AP Photo)





Workers leave from a coronavirus testing center set up outside a sports facility in Beijing, Tuesday, June 16, 2020. China reported several dozen more coronavirus infections Tuesday as it increased testing and lockdown measures in parts of the capital to control what appeared to be its largest outbreak in more than two months. (Photo by Ng Han Guan/AP Photo)





Residents wearing masks to curb the spread of the coronavirus ride past a neighborhood under lockdown in Beijing Tuesday, June 16, 2020. Chinese authorities locked down a third neighborhood in Beijing on Tuesday as they rushed to prevent the spread of a new coronavirus outbreak that has infected more than 100 people in a country that appeared to have largely contained the virus. (Photo by Ng Han Guan/AP Photo)





A resident wearing a face mask to curb the spread of the coronavirus browses meat products at a supermarket in Beijing, Monday, June 15, 2020. China's capital was bracing Monday for a resurgence of the coronavirus after more than 100 new cases were reported in recent days in a city that hadn't seen a case of local transmission in more than a month. (Photo by Ng Han Guan/AP Photo)





Local Miao people treated hundreds of tourists to a traditional long-table banquet on Monday during a gourmet festival in Duocai Ethnic Village, Guiyang city, southwest China's Guizhou province, 15 June, 2020. The long table banquet tradition in Guizhou can be traced back more than 1,000 years. It has always been a demonstration of the hospitality of people of the Miao ethnic group. Photo by (Imaginechina via AP Images)





Aerial view of shared bikes piled up at a parking lot on June 9, 2020 in Shenyang, Liaoning Province of China. (Photo by VCG/VCG via Getty Images)





Aerial view of a winding road in mountain area on June 3, 2020 in Rongjiang County, Guizhou Province of China. (Photo by VCG/VCG via Getty Images)