A visitor wearing a face mask visits the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

Visitors wearing face masks walk past artworks at the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

A boy plays in front of the main building of the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

Visitors wearing face shields rest on a bench at the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

People wearing face masks visit the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

A visitor wearing a face mask and gloves looks at a painting at the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

A visitor wearing a face mask rests on a bench at the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

A visitor wearing a face mask rests on a bench at the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)

Visitors wearing face masks take pictures of artworks at the Pushkin State Museum of Fine Arts in Moscow, Russia, on July 10, 2020. The Pushkin State Museum of Fine Arts on Friday reopened for public after closing due to coronavirus pandemic. (Photo by Alexander Zemlianichenko Jr/Xinhu)