People wearing protective face masks play computer games at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer poses for pictures at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A man wearing a face mask tries Virtual Reality (VR) games at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer poses for pictures at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song TPX IMAGES OF THE DAY

Cosplayers wearing face masks pose for a picture at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wears a face mask at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Cosplayers wearing face masks pose for a picture at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Women wearing face masks walk at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

People wear face masks at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Cosplayers wearing face masks pose for a picture at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A Tencent Games sign is seen at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Women wear face masks during the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wears a face mask during the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wears a face mask during the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wearing a face mask is seen at the China Digital Entertainment Expo and Conference (ChinaJoy), following the coronavirus disease (COVID-19) outbreak, in Shanghai, China July 31, 2020. REUTERS/Aly Song

People arrive to attend the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A man wearing a protective face mask and a face shield is seen at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A girls wearing a protective face mask plays with bubbles at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Girls wearing protective face masks play with bubbles at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Girls wearing protective face masks play with bubbles at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A girl wearing a protective face mask attends the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Girls wearing protective face masks attend the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

People wearing protective face masks play computer games at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

People wearing protective face masks play computer games at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

People attend the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wearing a face mask poses for a picture at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wearing a face mask poses for a picture at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

People play games on devices at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A woman wearing a face mask poses next to a hand sanitiser at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wearing a face mask attends the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A cosplayer wearing a face mask attends the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

Cosplayers wearing face masks pose for a picture at the China Digital Entertainment Expo and Conference (ChinaJoy) in Shanghai, following the coronavirus disease (COVID-19) outbreak, China July 31, 2020. REUTERS/Aly Song

A face mask is seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

Two face masks are seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks are seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man carries melt blown filter cloths at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks visit a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man wearing a face mask is seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks are seen at a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man wearing a face mask adjusts a machine of atomization disinfection at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

A man wearing a face mask walks past a machine of atomization disinfection at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks visit a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

People wearing face masks visit a mask stall at a procurement fair for epidemic-prevention materials in Shanghai following the coronavirus disease (COVID-19) outbreak, China July 22, 2020. REUTERS/Aly Song

Voting booths stand on the floor of the Expo Center on the day of the primary election in Louisville, Kentucky, U.S. June 23, 2020. REUTERS/Bryan Woolston

A view shows an Aventa-M medical ventilator next to a bed inside a pavilion of Crocus Expo exhibition centre, turned into a temporary hospital amid the coronavirus disease (COVID-19) outbreak, on the outskirts of Moscow, Russia May 11, 2020. Picture taken May 11, 2020. REUTERS/Evgenia Novozhenina

South African President Cyril Ramaphosa visits the coronavirus disease (COVID-19) treatment facilities at the NASREC Expo Centre in Johannesburg, South Africa April 24, 2020. Jerome Delay/Pool via REUTERS

South African President Cyril Ramaphosa visits the coronavirus disease (COVID-19) treatment facilities at the NASREC Expo Centre in Johannesburg, South Africa April 24, 2020. Jerome Delay/Pool via REUTERS

South African President Cyril Ramaphosa visits the coronavirus disease (COVID-19) treatment facilities at the NASREC Expo Centre in Johannesburg, South Africa April 24, 2020. Jerome Delay/Pool via REUTERS

South African President Cyril Ramaphosa visits the coronavirus disease (COVID-19) treatment facilities at the NASREC Expo Centre in Johannesburg, South Africa April 24, 2020. Jerome Delay/Pool via REUTERS

South African President Cyril Ramaphosa visits the coronavirus disease (COVID-19) treatment facilities at the NASREC Expo Centre in Johannesburg, South Africa April 24, 2020. Jerome Delay/Pool via REUTERS

A video journalist is seen in front of beds at the Nasrec Expo Centre, where it is expected to be turned into a temporary treatment site for the coronavirus disease (COVID-19) patients which are in need of urgent care, in Johannesburg, South Africa, April 14, 2020.REUTERS/Siphiwe Sibeko

A journalist wearing a protective face mask gestures in front of beds at the Nasrec Expo Centre, where it is expected to be turned into a temporary treatment site for the coronavirus disease (COVID-19) patients in need of urgent care, in Johannesburg, South Africa, April 14, 2020.REUTERS/Siphiwe Sibeko

Patients recovering from the coronavirus disease (COVID-19) are transferred from a hospital to a ballroom at the Singapore Expo, which was converted into community isolation facility, in Singapore, April 10, 2020. REUTERS/Edgar Su

A general view shows the Singapore Expo Convention Hall and Exhibition Centre, which is being converted into a facility for patients recovering from the coronavirus disease (COVID-19), in Singapore, April 5, 2020. REUTERS/Edgar Su

A general view of beds set up at the premises of the Expo Center, after the government turned it into a hospital following the outbreak of coronavirus disease (COVID-19), in Lahore, Pakistan March 26, 2020. REUTERS/Mohsin Raza

Military officers stand near parked trucks and ambulances at the premises of the Expo Center, after government declared it a mass isolation center and field hospital following an outbreak of the coronavirus disease (COVID-19), in Karachi, Pakistan, March 20, 2020. REUTERS/Akhtar Soomro

Military officers stand near parked ambulances at the premises of the Expo Center, after government declared it a mass isolation center and field hospital following an outbreak of the coronavirus disease (COVID-19), in Karachi, Pakistan, March 20, 2020. REUTERS/Akhtar Soomro

Italy's Tree of Life, a central feature of the annual Milan Expo global fair, is illuminated with the colours of the Italian flag to show solidarity with the country as it battles coronavirus, in Milan, Italy, March 16, 2020. REUTERS/Daniele Mascolo

Shawn Morse, dressed as Savage Opress from "Star Wars" is photographed by friend Ashley Wernicke looking into a vacant expo hall as a small group of cosplayers gather at the Washington State Convention Center for what would have been the 2020 Emerald City Comic Con, an event organizers said drew 98,000 fans over four days last year, and will be postponed to August due to the coronavirus (COVID-19) outbreak, in Seattle, Washington, U.S. March 14, 2020. REUTERS/Jason Redmond

Saudi visitors are seen during inauguration of IKTVA Forum and Exhibition 2020 at Dhahran Expo Center, in Dammam, Saudi Arabia, February 24, 2020. REUTERS/Hamad I Mohammed