A man gets swapped during a nuclei test for COVID-19 in Beijing Saturday, September 18, 2021. China's "zero tolerance" strategy of trying to isolate every case and stop transmission of the coronavirus has kept kept the country where the virus first was detected in late 2019 largely free of the disease. (Photo by Ng Han Guan/AP Photo)





This photo taken on September 19, 2021 shows pandas in their enclosure at the Chengdu Research Base of Giant Panda Breeding in Chengdu in China's southwestern Sichuan province. (Photo by AFP Photo/China Stringer Network)





People pose in front of a giant moon-shaped balloon ahead of Mid-Autumn Festival, in Hong Kong, China on September 20, 2021. (Photo by Tyrone Siu/Reuters)





A resident wields a cloth dragon outside the Evergrande Yujing Bay residential complex in Beijing, China, Tuesday, September 21, 2021. Global investors are watching nervously as one of China's biggest real estate developers struggles to avoid defaulting on tens of billions of dollars of debt, fueling fears of possible wider shock waves for the financial system. (Photo by Ng Han Guan/AP Photo)





Chinese actress Yao Chen attends the red carpet for the 11th Beijing International Film Festival held on the outskirts of Beijing, China, Monday, September 20, 2021. (Photo by Ng Han Guan/AP Photo)





Residents past by a shuttered office with the sign which reads "Evergrande Beijing City Exhibition Hall" outside the Evergrande Yujing Bay residential complex in Beijing, China, Tuesday, September 21, 2021. (Photo by Ng Han Guan/AP Photo)





A woman looks back as she walks by a map showing Evergrande development projects with its apartment buildings seen behind, at an Evergrande city plaza in Beijing, Tuesday, September 21, 2021. Global investors are watching nervously as the Evergrande Group, one of China's biggest real estate developers, struggles to avoid defaulting on tens of billions of dollars of debt, fueling fears of possible wider shock waves for the Chinese financial system. (Photo by Andy Wong/AP Photo)





A farmer works on a red chilli drying field at Sandun township on September 21, 2021 in Jiuquan, Gansu Province of China. (Photo by Hou Chonghui/VCG via Getty Images)





Men on electric bikes wait for riders near the Evergrande headquarters, left, in Shenzhen, China, Friday, September 24, 2021. Seeking to dispel fears of financial turmoil, some Chinese banks are disclosing what they are owed by a real estate developer that is struggling under $310 billion in debt, saying they can cope with a potential default. (Photo by Ng Han Guan/AP Photo)





Residents past by police and security personnel preparing for duty outside the Evergrande headquarters in Shenzhen, China, Friday, September 24, 2021. Things appeared quiet at the headquarters of the heavily indebted Chinese real estate developer Evergrande, one day after the day it had promised to pay interest due to bondholders in China. (Photo by Ng Han Guan/AP Photo)





Men on electric bikes wait for riders near the Evergrande headquarters, center, in Shenzhen, China, Friday, September 24, 2021. (Photo by Ng Han Guan/AP Photo)





A police officer and security personnel react to something in the sky near the headquarters of the real estate developer Evergrande Group, Thursday, September 23, 2021, in Shenzhen, southern China. (Photo by Ng Han Guan/AP Photo)





Panda cubs born this year rest at a breeding room of Shenshuping giant panda base in Wolong National Nature Reserve, Sichuan province, China on September 22, 2021. (Photo by China Daily via Reuters)





Pro-democracy activist Alexandra Wong (C) holds up a Union Jack flag outside West Kowloon court in Hong Kong on September 23, 2021, where 47 pro-democracy defendents appear in court charged with conspiracy to commit subversion under the Beijing enacted national security law. (Photo by Isaac Lawrence/AFP Photo)





This aerial photo taken on September 24, 2021 shows a worker producing red lanterns ahahead of China's National Day in Danzhai, southwestern Guizhou province. (Photo by AFP Photo/China Stringer Network)





Freshmen take part in a military training at Chongqing City Vocational College on September 23, 2021 in Chongqing, China. (Photo by Chen Shichuan/VCG via Getty Images)





Freshmen take part in a military training at Chongqing City Vocational College on September 23, 2021 in Chongqing, China. (Photo by Chen Shichuan/VCG via Getty Images)





A visitor uses a smartphone to film an audio-visual art installation of ruined Old Summer Palace, at the China Beijing International High-Tech Expo in Beijing, Sunday, September 26, 2021. The annual expo is a showcase for some of China's domestic technological innovations. (Photo by Andy Wong/AP Photo)





A J-10 fighter jet of Chinese People's Liberation Army (PLA) Air Force Bayi aerobatic team is seen at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China on September 28, 2021. (Photo by Aly Song/Reuters)





A man watches Chinese People's Liberation Army (PLA) Air Force Red Falcon aerobatic team perform at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China on September 28, 2021. (Photo by Aly Song/Reuters)