Construction workers pour concrete into the floor in the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A construction worker sits in the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Men work to complete the construction of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A worker carries a scaffolding pole at the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A worker carries a scaffolding pole at the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A woman pushes a wheelbarrow at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Men work to complete the construction of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A man works at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Men work to complete the construction of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A man works at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A worker cuts metal poles at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A man welds pipes at the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

A general view shows the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Workers leave the construction site of the National Speed Skating Oval, known colloquially as the "Ice Ribbon", which will host the 2021 World Speed Skating Championships and the speed skating competitions at the 2022 Winter Olympics in Beijing, China, September 23, 2020. REUTERS/Thomas Peter

Ryan El-Farnawani, a member of Egypt Ice Hockey team "Anubis" attends a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Ryan El-Farnawani, a member of Egypt Ice Hockey team "Anubis" attends a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Mahmoud Ghoneim, of Egypt Ice Hockey team "Pharaohs" is seen in action with Ryan El-Farnawani of Egypt Ice Hockey team "Anubis" in a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Ahmed Amr, a member of Egypt Ice Hockey team "Anubis" in action at a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Ahmed Amr, a member of Egypt Ice Hockey team "Anubis" is seen in a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Members of Egypt Ice Hockey teams "Pharaohs" and "Anubis" take part in a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Ibrahim Mohamed, a member of Egypt Ice Hockey team "Pharaohs" attends a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Members of Egypt Ice Hockey team "Anubis" attend a training session on Ice Skating Mall after re-open training amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Mahmoud Ghoneim, a member of Egypt Ice Hockey team "Pharaohs" attends a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

A general view of Ice Skating Mall as members of Egypt Ice Hockey teams "Pharaohs" and "Anubis" take part in a training session after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Ayman Abdallah, a member of Egypt Ice Hockey team "Pharaohs" with Zeyad Gawad of Egypt Ice Hockey team "Anubis" take part in a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Members of Egypt Ice Hockey teams "Pharaohs" and "Anubis" pose for a photograph after a training session at Ice Skating Mall as they returned to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

A shadow of Mahmoud Ghoneim, a member of Egypt Ice Hockey team "Pharaohs" is seen during a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Members of Egypt Ice Hockey teams "Pharaohs" and "Anubis" take part in a training session at Ice Skating Mall after returning to trainings amid the coronavirus disease (COVID-19) pandemic in Cairo, Egypt September 4, 2020. Picture taken September 4, 2020. REUTERS/Amr Abdallah Dalsh

Children wearing face masks skate at an ice rink by Eurojoy at the winter sports section of the 2020 China International Fair for Trade in Services (CIFTIS), following the COVID-19 outbreak, in Beijing, China September 5, 2020. REUTERS/Tingshu Wang

A woman has her photo taken while roller-skating at Moja museum amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, August 11, 2020. REUTERS/Ajeng Dinar Ulfiana

People wearing protective face masks and face shields roller-skate at Moja museum amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, August 11, 2020. REUTERS/Ajeng Dinar Ulfiana

Women wearing protective face masks roller-skate at Moja museum amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, August 11, 2020. REUTERS/Ajeng Dinar Ulfiana

A man wearing a protective face mask and face shield roller-skates at Moja museum amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, August 11, 2020. REUTERS/Ajeng Dinar Ulfiana

A woman wears a protective face shield as she roller-skates at Moja museum amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, August 11, 2020. REUTERS/Ajeng Dinar Ulfiana

People wear protective face masks as they roller-skate at Moja museum amid the coronavirus disease (COVID-19) outbreak in Jakarta, Indonesia, August 11, 2020. REUTERS/Ajeng Dinar Ulfiana

A skateboarder skates in Astoria Park in Queens, New York, U.S., August 5, 2020. REUTERS/Brendan McDermid

A skateboarder skates in Astoria Park in Queens, New York, U.S., August 5, 2020. REUTERS/Brendan McDermid

Children play with scooters during the sunset at a skate park on the sea wall of Calais, France, July 10, 2020. REUTERS/Pascal Rossignol

A boy plays with a scooter during the sunset at a skate park on the sea wall of Calais, France, July 10, 2020. REUTERS/Pascal Rossignol

A boy plays with a scooter during the sunset at a skate park on the sea wall of Calais, France, July 10, 2020. REUTERS/Pascal Rossignol TPX IMAGES OF THE DAY

A child skates past the Emancipation Memorial, depicting President Abraham Lincoln standing over a kneeling African-American slave who has broken chains on his feet and hands, which has come under recent scrutiny in Washington, U.S., June 22, 2020. REUTERS/Kevin Lamarque

A girl skates near the Behobia bridge as Spain reopens its borders to most European visitors after the coronavirus lockdown coinciding with the end of the state of emergency in the country, in Irun, Spain June 21, 2020. REUTERS/Vincent West

A skateboarder holds up a skate as a protest sign in front of the Confederate Monument carved into granite at Stone Mountain Park in Stone Mountain, Georgia, U.S. June 15, 2020. REUTERS/Dustin Chambers

A boy wears a protective face mask while roller skating as the government eases the restrictions imposed to curb the spread of the coronavirus disease (COVID-19) in Tangerang, outskirts of Jakarta, Indonesia, June 14, 2020. REUTERS/Ajeng Dinar Ulfiana

Roller skate performer Kaitlyn Saunders, 9, from Washington, poses in front of Black Lives Matter protest signs that were moved overnight from the security fence near the White House to a wall across the street as a cleanup from the recent demonstrations in Washington, U.S., June 10, 2020. REUTERS/Kevin Lamarque

A person on roller skates holds a sign during a protest in response to the death in Minneapolis police custody of George Floyd, in Los Angeles, California, U.S., June 3, 2020. REUTERS/Patrick T. Fallon

A woman on skates is seen holding a banner during a "Black Lives Matter" protest following the death of George Floyd who died in police custody in Minneapolis, London, Britain, June 3, 2020. REUTERS/Dylan Martinez

Demonstrators skate down a street near Times Square during a protest against the death in Minneapolis police custody of George Floyd, in New York City, U.S., June 2, 2020. REUTERS/Brendan Mcdermid

People skate at Piazza Duomo as Italy eases some of the lockdown measures put in place during the coronavirus disease (COVID-19) outbreak, in Milan, Italy May 18, 2020. REUTERS/Alessandro Garofalo

A notice is seen on a fence infront of a closed skate park in Clapham Common, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 12, 2020. REUTERS/John Sibley

A skate boarder is seen in a closed skate park in Clapham Common, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 12, 2020. REUTERS/John Sibley

People, wearing protective face masks, skate along Paseo de la Castellana avenue after Madrid's local authorities allowed some streets only for pedestrian use during weekends and festivity days amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, May 9, 2020. REUTERS/Sergio Perez

Professional skateboarder Andy MacDonald (L) skates with Tony Hawk (C) as they use the table of DJ Z-Trip (R) while skating with other professional skateboarders in an internet and social network broadcast to the world during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

Professional skateboarder Tony Hawk skates his office ramp with other professional skateboarders as they use the internet and social network to broadcast their session to the world during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

DJ Z-Trip performs on top of Tony Hawk's office ramp as Tony and other professional skateboarders skate in an internet and social network broadcast to the world during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

Professional skateboarder Tony Hawk introduces a group of professional skateboarders as they begin a broadcast of their skate session on his office ramp to the world via the internet and social network during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

Professional skateboarder Tony Hawk skates his office ramp with other professional skateboarders as they use the internet and social network to broadcast their session to the world during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

DJ Z-Trip performs on top of Tony Hawk's office ramp as Tony and other professional skateboarders skate in an internet and social network broadcast to the world during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

Professional skateboarder Tony Hawk uses hand sanitizer at the bottom of the ramp before skating with other professional skateboarders in an internet broadcast to the world during the outbreak of the coronavirus disease (COVID-19) in Vista, California, U.S., May 8, 2020. REUTERS/Mike Blake

A man holds his dog as he skates at the sidewalk of Barceloneta beach, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 4, 2020. REUTERS/Nacho Doce