Singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

Singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

Singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

People watch as singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

Singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

Singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

People watch as singer Kadim Al Sahir performs during the opening of the infinitives night series at Dubai Expo 2020, in Dubai, United Arab Emirates, October 15, 2021. REUTERS/Mohammed Salem

Visitors look at a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020, in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

A visitor looks at a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020, in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

Visitors look at a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020, in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

A visitor looks at the accessories of a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020, in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

A visitor walks through a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020 in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

Visitors are shown looking at a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020, in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

A visitor takes a photo of a private collection of Afghan artefacts at the Afghanistan Pavilion during the Dubai Expo 2020 in Dubai, United Arab Emirates, October 12, 2021. Picture taken October 12, 2021. REUTERS/Mohammed Salem

Grazia Tucci, Professor at the University of Florence and head of the Advanced Vocational Training Center for the Digitization and "Re-Construction" of Cultural Heritage, poses for a photo next to a 3-D replica of Michelangelo's David statue in the Italy Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 10, 2021. REUTERS/Raya Jalabi

A visitor tours the Syrian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 7, 2021. Picture taken October 7, 2021. REUTERS/Abdel Hadi Ramahi

Pictures of Syrian landmarks are displayed in the Syrian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 7, 2021. Picture taken October 7, 2021. REUTERS/Abdel Hadi Ramahi

People visit the Syrian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 7, 2021. Picture taken October 7, 2021. REUTERS/Abdel Hadi Ramahi

The 3-D twin of Michelangelo's David statue is pictured in the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Abdel Hadi Ramahi

Former United Nations High Commissioner for Human Rights Mary Robinson speaks at the World Green Economy Summit at Expo 2020 in Dubai, United Arab Emirates, October 6, 2021. REUTERS/Alexander Cornwell

Workers are pictured at the Singapore Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People visit the Singapore Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

A view shows a tree made from multiple plants at the Netherlands Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People visit the Netherlands Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People visit the Singapore Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People visit the Singapore Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People hold umbrellas as they visit the Netherlands Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People hold umbrellas as they visit the Netherlands Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People hold umbrellas as they visit the Netherlands Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

People hold umbrellas as they visit the Netherlands Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

A man walks past the Netherlands Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

A general view of the Singapore Pavilion at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

The 3D-printed replica of Michelangelo's David statue is pictured in the Italian Pavilion at the Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

The 3D-printed replica of Michelangelo's David statue is pictured in the Italian Pavilion at the Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

The 3-D twin of Michelangelo's David statue is pictured in the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

The 3-D twin of Michelangelo's David statue is pictured in the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

Visitors look around the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

A woman stands by the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

A statue is pictured in the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

The 3-D twin of Michelangelo's David statue is pictured in the Italian Pavilion at Dubai Expo 2020, in Dubai, United Arab Emirates, October 5, 2021. Picture taken October 5, 2021. REUTERS/Rula Rouhana

A woman is pictured as she arrives at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. REUTERS/Rula Rouhana

People are pictured at the entrance of Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. REUTERS/Rula Rouhana

People arrive at Dubai Expo 2020 in Dubai, United Arab Emirates October 5, 2021. REUTERS/Rula Rouhana

Exterior view of the USA Pavilion at Expo 2020 Dubai, United Arab Emirates October 5, 2021. REUTERS/Alexander Cornwell

Japan's new World Expo minister Kenji Wakamiya speaks at a news conference in Tokyo, Japan, October 5, 2021. REUTERS/Kim Kyung-Hoon

Japan's new World Expo minister Kenji Wakamiya speaks at a news conference in Tokyo, Japan, October 5, 2021. REUTERS/Kim Kyung-Hoon

A man stands next to a panda robot at the Chinese Pavilion at the Expo 2020 in Dubai, United Arab Emirates, October 4, 2021. REUTERS/Jacob Greaves

A panda robot waves while being pictured at the Chinese Pavilion at the Expo 2020 in Dubai, United Arab Emirates, October 4, 2021. REUTERS/Jacob Greaves

A panda robot is pictured at the Chinese Pavilion at the Expo 2020 in Dubai, United Arab Emirates, October 4, 2021. REUTERS/Jacob Greaves

A panda robot stands while being pictured at the Chinese Pavilion at the Expo 2020 in Dubai, United Arab Emirates, October 4, 2021. REUTERS/Jacob Greaves


People watch as fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

Fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

People watch as fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

People watch as fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

Fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

Fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

Fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

Fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem

People watch as fireworks explode over the Atlantis hotel during the first day of Dubai Expo 2020 in Dubai, United Arab Emirates, October 1, 2021. REUTERS/Mohammed Salem