A prison van carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China, July 27, 2021. REUTERS/Tyrone Siu

A prison van which is carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China July 27, 2021. REUTERS/Tyrone Siu

A prison van carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China July 27, 2021. REUTERS/Tyrone Siu

A prison van which is carrying Tong Ying-kit, the first person charged under the new national security law, arrives at High Court for a hearing, in Hong Kong, China July 27, 2021. REUTERS/Tyrone Siu

A person wearing a rain coat rides a bicycle in front of a wall decoration featuring Tokyo 2020 Olympic Games mascot Miraitowa and Paralympics mascot Someity, in Tokyo, Japan, July 27, 2021. REUTERS/Kim Kyung-Hoon

A person waves a flag in support of pop star Britney Spears on the day of a conservatorship case hearing at Stanley Mosk Courthouse in Los Angeles, California, U.S., July 26, 2021. REUTERS/Mario Anzuoni

U.S. firefighters remove the body of a person from the Rio Bravo river in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico July 26, 2021. REUTERS/Jose Luis Gonzalez

U.S. firefighters remove the body of a person from the Rio Bravo river in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico July 26, 2021. REUTERS/Jose Luis Gonzalez

U.S. firefighters remove the body of a person from the Rio Bravo river in El Paso, Texas, U.S., as seen from Ciudad Juarez, Mexico July 26, 2021. REUTERS/Jose Luis Gonzalez

Men wearing personal protective equipment (PPE) disinfect a street as the city is under lockdown, during the coronavirus disease ( COVID-19 ) outbreak in Hanoi, Vietnam July 26, 2021. REUTERS/Stringer

A person wearing personal protective equipment (PPE) disinfects a street as the city is under lockdown, during the coronavirus disease ( COVID-19 ) outbreak in Hanoi, Vietnam July 26, 2021. REUTERS/Stringer

A person wearing a protective face shield and face mask walks through Oxford Circus, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, July 26, 2021. REUTERS/Henry Nicholls

Tokyo 2020 Olympics - Gymnastics - Artistic - Men's Team - Final - Ariake Gymnastics Centre, Tokyo, Japan - July 26, 2021. Xiao Ruoteng of China bumps fists with a person after performing on the vault. REUTERS/Lindsey Wasson

Tokyo 2020 Olympics - Gymnastics - Artistic - Men's Team - Final - Ariake Gymnastics Centre, Tokyo, Japan - July 26, 2021. Wataru Tanigawa of Japan reacts while embracing a person after performing on the vault. REUTERS/Lindsey Wasson

Tokyo 2020 Olympics - Gymnastics - Artistic - Men's Team - Final - Ariake Gymnastics Centre, Tokyo, Japan - July 26, 2021. Sun Wei of China bumps fists with a person after performing on the vault. REUTERS/Lindsey Wasson

Karen Armstrong reaches to touch displayed on a screen shoulder of her grandson, U.S. swimmer Hunter Armstrong, before he makes his Olympic debut in the men's 100m backstroke preliminary race during the 2021 Olympic Games, while his family watches from home in Dover, Ohio, U.S., July 25, 2021. Before every race, in person or on screen, Karen Armstrong touches the shoulder of her grandson. “Not only is he young chronologically,” Karen Armstrong said. “He’s also young physically.” While making the 2021 Olympics were a bit of a surprise, his family is sure he'll be in his prime for the 2024 Olympics in Paris. Picture taken July 25, 2021. REUTERS/Gaelen Morse

A person receives Russia's Sputnik V vaccine against the coronavirus disease (COVID-19) at a Mi Teleferico cable car station turned into a vaccination centre, in El Alto, Bolivia July 25, 2021. REUTERS/Manuel Claure

A person wearing a poncho and protective face mask walks through heavy rainfall, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, July 25, 2021. REUTERS/Henry Nicholls

Tokyo 2020 Olympics - Basketball - Men - Group B - Australia v Nigeria - Saitama Super Arena, Saitama, Japan - July 25, 2021. Side line officials wearing Personal Protective Equipment REUTERS/Brian Snyder

Tokyo 2020 Olympics - Basketball - Men - Group A - Iran v Czech Republic - Saitama Super Arena, Saitama, Japan - July 25, 2021. Side line officials wearing Personal Protective Equipment REUTERS/Brian Snyder

Tokyo 2020 Olympics - Gymnastics - Artistic - Women's Individual All-Around - Qualification - Ariake Gymnastics Centre, Tokyo, Japan - July 25, 2021. Mai Murakami of Japan bumps fists with a person. REUTERS/Lindsey Wasson

A person throws a stone at the police during a protest to demand the impeachment of Brazil's President Jair Bolsonaro and against his handling of the coronavirus disease (COVID-19) pandemic, at Paulista Avenue in Sao Paulo, Brazil, July 24, 2021. REUTERS/Amanda Perobelli

Police officers detain a person during a protest against Brazil’s President Jair Bolsonaro in Sao Paulo, Brazil, July 24, 2021. REUTERS/Carla Carniel

A person holds a sign that reads "Bolsonaro killed my mother. For her, my grief became fight. Genocide out" in a protest against Brazil's President Jair Bolsonaro, in Sao Paulo, Brazil, July 24, 2021. REUTERS/Carla Carniel

A person jogs beside an installation by the artist JR in New York City, U.S., July 24, 2021. REUTERS/David 'Dee' Delgado

A person has their photo taken at an Olympic Rings installation at the Channel Gardens Rockefeller Center in New York City, U.S., July 24, 2021. REUTERS/David 'Dee' Delgado

A person holds a sign that reads "Go back to hell" in a protest against Brazil's President Jair Bolsonaro, in Sao Paulo, Brazil, July 24, 2021. REUTERS/Carla Carniel

A person and a child sit in the shade during an anti-vaccine demonstration, amid the coronavirus disease (COVID-19) pandemic, in Central Park, New York City, U.S., July 24, 2021. REUTERS/David 'Dee' Delgado

A person wears a neckless reading, "TRUMP" and a firearm jewellery during an anti-vaccine demonstration, amid the coronavirus disease (COVID-19) pandemic, in Central Park, New York City, U.S., July 24, 2021. REUTERS/David 'Dee' Delgado

Tokyo 2020 Olympics - Soccer Football - Women - Group F - Netherlands v Brazil - Miyagi Stadium, Miyagi, Japan - July 24, 2021. A ball is seen being held by a member of staff wearing Personal Protective Equipment (PPE) before the match REUTERS/Amr Abdallah Dalsh

Tokyo 2020 Olympics - Soccer Football - Women - Group F - Netherlands v Brazil - Miyagi Stadium, Miyagi, Japan - July 24, 2021. Member of staff wearing Personal Protective Equipment (PPE) holds a ball before the match REUTERS/Amr Abdallah Dalsh TPX IMAGES OF THE DAY

Tokyo 2020 Olympics - Basketball 3x3 - Women - Pool A - United States v France - Aomi Urban Sports Park, Tokyo, Japan - July 24, 2021. France president Emmanuel Macron greets a person as he attends the match. REUTERS/Andrew Boyers

A person reacts as he receives a dose of China's Sinovac Biotech vaccine against the coronavirus disease (COVID-19) during a mass vaccination program at Ancol amusement park in Jakarta, Indonesia, July 24, 2021. REUTERS/Willy Kurniawan

A person holds a photo of late Haitian President Jovenel Moise, who was shot dead earlier this month, during his funeral at his family home in Cap-Haitien, Haiti, July 23, 2021. REUTERS/Ricardo Arduengo

Workers wearing Personal Protective Equipment (PPE) bury a coronavirus disease (COVID-19) victim in Jakarta, Indonesia, July 23, 2021. REUTERS/Willy Kurniawan

Workers wearing Personal Protective Equipment (PPE) take a break while burying the coronavirus disease (COVID-19) victims in Jakarta, Indonesia, July 23, 2021. REUTERS/Willy Kurniawan

Tokyo 2020 Olympics - The Tokyo 2020 Olympics Opening Ceremony - Olympic Stadium, Tokyo, Japan - July 23, 2021. A person walks inside the stadium before the opening ceremony. REUTERS/Leonhard Foeger

Tokyo 2020 Olympics - The Tokyo 2020 Olympics Opening Ceremony - Olympic Stadium, Tokyo, Japan - July 23, 2021 A person poses for a picture outside the stadium before the opening ceremony REUTERS/Leah Millis

Tokyo 2020 Olympics - The Tokyo 2020 Olympics Opening Ceremony - Olympic Stadium, Tokyo, Japan - July 23, 2021 A person is seen with Olympic decorations nearby the stadium before the opening ceremony REUTERS/Leah Millis

Tokyo 2020 Olympics - The Tokyo 2020 Olympics Opening Ceremony - Olympic Stadium, Tokyo, Japan - July 23, 2021 A person is seen in their residences displaying Olympic decorations nearby the stadium before the opening ceremony REUTERS/Fabrizio Bensch

Tokyo 2020 Olympics - The Tokyo 2020 Olympics Opening Ceremony - Olympic Stadium, Tokyo, Japan - July 23, 2021 A person walks inside the stadium before the opening ceremony REUTERS/Leonhard Foeger

Tokyo 2020 Olympics - The Tokyo 2020 Olympics Opening Ceremony - Olympic Stadium, Tokyo, Japan - July 23, 2021 A person walks inside the stadium before the opening ceremony REUTERS/Leonhard Foeger

A healthcare worker in personal protective equipment (PPE) checks a man's temperature with a thermal scanner before he receives a dose of the vaccine against the coronavirus disease (COVID-19) at a Mass Rapid Transit (MRT) station, as cases surge in Jakarta, Indonesia, July 23, 2021. REUTERS/Ajeng Dinar Ulfiana

A food delivery person passes by a coronavirus disease mobile testing van, as cases of the infectious Delta variant of COVID-19 continue to rise, in Washington Square Park in New York City, U.S., July 22, 2021. REUTERS/Brendan McDermid

A person holds inflatable Earth as climate activists including Extinction Rebellion and Fridays for Future stage a protest demanding more action whilst G20 climate and environment ministers hold a meeting in Naples, Italy, July 22, 2021. REUTERS/Guglielmo Mangiapane

A person holds inflatable Earth as climate activists including Extinction Rebellion and Fridays for Future stage a protest demanding more action whilst G20 climate and environment ministers hold a meeting in Naples, Italy, July 22, 2021. REUTERS/Guglielmo Mangiapane

A person holds a placard as climate activists including Extinction Rebellion and Fridays for Future stage a protest demanding more action whilst G20 climate and environment ministers hold a meeting in Naples, Italy, July 22, 2021. REUTERS/Guglielmo Mangiapane

A person holds placards as climate activists including Extinction Rebellion and Fridays for Future stage a protest demanding more action whilst G20 climate and environment ministers hold a meeting in Naples, Italy, July 22, 2021. Placards read: "G20: Either you change your policy or you change your job" REUTERS/Guglielmo Mangiapane

A person holds a placard as climate activists including Extinction Rebellion and Fridays for Future stage a protest demanding more action whilst G20 climate and environment ministers hold a meeting in Naples, Italy, July 22, 2021. REUTERS/Guglielmo Mangiapane

A person holds placards as climate activists including Extinction Rebellion and Fridays for Future stage a protest demanding more action whilst G20 climate and environment ministers hold a meeting in Naples, Italy, July 22, 2021. Placards read: "Climate has already changed, why can't you?" REUTERS/Guglielmo Mangiapane

A member of the military wearing personal protective equipment waits at a door of a prefab monitoring the entrance of the Yumenoshima Archery Field, ahead of the official opening of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 22, 2021. REUTERS/Clodagh Kilcoyne

Tokyo 2020 Olympics - Soccer Football - Men - Group B - Honduras v Romania - Ibaraki Kashima Stadium, Ibaraki, Japan - July 22, 2021. Medical staff wearing Personal Protective Equipment (PPE) pitchside before the match REUTERS/Henry Romero

Tokyo 2020 Olympics Preview - Tokyo, Japan - July 22, 2021 A lone person wearing a face mask sits in the stands at Fuji International Speedway REUTERS/Christian Hartmann

Tokyo 2020 Olympics - Canoe Slalom Training - Kasai Canoe Slalom Centre, Tokyo, Japan - July 22, 2021 A person climbs the steps of the empty stands during training. REUTERS/Stoyan Nenov

A person walks down the sidewalk, as seen from a special bus that transports Olympic attendees to and from the facilities and media center ahead of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 21, 2021. REUTERS/Leah Millis REFILE - CORRECTING DATE

A person walks past an Olympics advertisement, as seen from a special bus that transports journalists to and from the facilities and media center ahead of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 21, 2021. REUTERS/Leah Millis REFILE - CORRECTING DATE

A person walks under a bridge, as seen from a special bus that transports Olympic attendees to and from the facilities and media center ahead of the Tokyo 2020 Olympic Games in Tokyo, Japan, July 21, 2021. REUTERS/Leah Millis REFILE - CORRECTING DATE

A person jumps into The Serpentine lake in Hyde Park in the warm early morning temperature in London, Britain, July 21, 2021. REUTERS/Peter Nicholls

A person takes a photo of an Olympic rings monument two days before the start of the Tokyo 2020 Olympic Games, in Tokyo, Japan July 21, 2021 REUTERS/Androniki Christodoulou

A person looks on at Shibuya Sky observation deck ahead of the official opening of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 21, 2021. REUTERS/Kai Pfaffenbach