People work at a facility of Chinese vaccine maker Sinovac Biotech, that is developing an experimental coronavirus disease (COVID-19) vaccine, during a government-organized media tour in Beijing, China, September 24, 2020. Picture taken September 24, 2020. REUTERS/Thomas Peter

People leave the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member cleans the Hongqi E-HS9 at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member cleans a Hongqi self-driving concept car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A woman sits in a Hongqi self-driving concept car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People take pictures of the Audi Q5 L Sportback at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member polishes the FAW Hongqi H9+ at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A child carrying a toy gun stands in front of the FAW Hongqi H9+ at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors look at the FAW Hongqi H9+ at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member polishes an Audi e-tron during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

General view of the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member polishes the bonnet of a GAC Aion S at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member wears a protective face mask at the GAC booth during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A visitor wearing a protective face mask sits in a GAC Aion V at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Staff members polish a GAC Enpulse at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People visit the Nissan booth at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors sit inside the Mercedes S500L at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A staff member polishes the BMW i3 at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

The Lynk & Co Zero Concept car is seen at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

The Lynk & Co logo is seen at their booth at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

The Lynk & Co logo is seen at their booth at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People visit the Lynk & Co booth at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A visitor wearing a protective face mask looks at the Lynk & Co 03 TCR Racing Car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

The new Volkswagen Golf 8 is seen at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A visitor looks inside the new Volkswagen Phideon at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A visitor takes a picture of the new Volkswagen Phideon at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People wearing protective face masks rest at the Volkswagen stall during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People wearing protective face masks look at cars in the Volkswagen stall at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People walk past the Volkswagen booth at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

BMW emblems are reflected on the bonnet of a car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People wearing face masks following the coronavirus disease (COVID-19) outbreak, look at BMW i4 concept car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People wearing face masks following the coronavirus disease (COVID-19) outbreak, look at BMW iX3 car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A man and a child look at a BMW X7 car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People wearing face masks following the coronavirus disease (COVID-19) outbreak, look at BMW i4 concept car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Ushers wearing face masks following the coronavirus disease (COVID-19) outbreak, take a rest on the sidelines of the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Ushers wearing face masks following the coronavirus disease (COVID-19) outbreak, take a rest on the sidelines of the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter TPX IMAGES OF THE DAY

Ushers wearing face masks following the coronavirus disease (COVID-19) outbreak, take a rest on the sidelines of the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People look at a Volvo XC40 car during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People look at a Volvo XC40 car during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Security personnel wears a face mask with a Swedish flag at the Volvo booth during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors look at a Polestar 1 car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A man looks at a Polestar Precept car at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People visit the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

A man wearing face masks following the coronavirus disease (COVID-19) outbreak, looks at a Geely Preface at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors wearing face masks following the coronavirus disease (COVID-19) outbreak, look at a Geely Preface at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors wearing face masks following the coronavirus disease (COVID-19) outbreak, look at a Mercedes V260 L SPV luxury van at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors wearing face masks following the coronavirus disease (COVID-19) outbreak, look at a Mercedes V260 L SPV luxury van at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Visitors wearing face masks following the coronavirus disease (COVID-19) outbreak, look at a Geely Preface at the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Nissan Chief Executive Officer Makoto Uchida speaks at Nissan booth via video link during the presentation of Nissan's Ariya model during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Nissan Chief Executive Officer Makoto Uchida speaks at Nissan booth via video link during the presentation of Nissan's Ariya model during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Nissan Chief Executive Officer Makoto Uchida speaks at Nissan booth via video link during the presentation of Nissan's Ariya model during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

Nissan Chief Executive Officer Makoto Uchida speaks at Nissan booth via video link during the presentation of Nissan's Ariya model during the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Thomas Peter

People wearing face masks following the coronavirus disease (COVID-19) outbreak enter the venue of the Beijing International Automotive Exhibition, or Auto China show, in Beijing, China September 26, 2020. REUTERS/Yilei Sun

Climate activist Lance Lau, 11, picks up trash at San Tau Beach during a climate strike and a beach clean-up on Lantau island in Hong Kong, China September 25, 2020. REUTERS/Joyce Zhou

Lance Lau, 11, Elise Hon, 11, Rose Netherton, 36, and other climate activists hold placards as they pose for pictures during a climate strike and a beach clean-up at San Tau Beach on Lantau island in Hong Kong, China September 25, 2020. REUTERS/Joyce Zhou

Climate activist Lance Lau, 11, holds a trash bag during a climate strike and a beach clean-up at San Tau Beach on Lantau island in Hong Kong, China September 25, 2020. REUTERS/Joyce Zhou

Climate activist Elise Hon, 11, picks up trash at San Tau Beach during a climate strike and a beach clean-up on Lantau island in Hong Kong, China September 25, 2020. REUTERS/Joyce Zhou

Climate activists Rose Netherton, 36, Lance Lau, 11, and Elise Hon, 11, take part in a climate strike and a beach clean-up with other participants at San Tau Beach on Lantau island in Hong Kong, China September 25, 2020. REUTERS/Joyce Zhou

Staff members wearing face masks following the coronavirus disease (COVID-19) outbreak take part in an event marking airport's first launching anniversary at the Beijing Daxing International Airport, ahead of Chinese National Day holiday, in Beijing, China September 25, 2020. REUTERS/Carlos Garcia Rawlins

A passenger wearing a face mask holds a Chinese national flag as he pulls a suitcase on the day of the airport's first launching anniversary, at the Beijing Daxing International Airport ahead of Chinese National Day holiday, in Beijing, China September 25, 2020. REUTERS/Carlos Garcia Rawlins