Flags marking Moscow's 877th founding anniversary are pictured in Moscow,bangalore to kolkata train Russia, Sept. 8, 2024. A series of events were held on this weekend to celebrate Moscow City Day and to mark the city's 877th founding anniversary. (Photo by Alexander Zemlianichenko Jr/Xinhua)

Flags and installations marking Moscow's 877th founding anniversary are pictured in Moscow, Russia, Sept. 8, 2024. A series of events were held on this weekend to celebrate Moscow City Day and to mark the city's 877th founding anniversary. (Photo by Alexander Zemlianichenko Jr/Xinhua)

A woman poses for photos with an installation marking Moscow's 877th founding anniversary in Moscow, Russia, Sept. 8, 2024. A series of events were held on this weekend to celebrate Moscow City Day and to mark the city's 877th founding anniversary. (Photo by Alexander Zemlianichenko Jr/Xinhua)

A woman poses for photos with an installation marking Moscow's 877th founding anniversary in Moscow, Russia, Sept. 8, 2024. A series of events were held on this weekend to celebrate Moscow City Day and to mark the city's 877th founding anniversary. (Photo by Alexander Zemlianichenko Jr/Xinhua)

Flags marking Moscow's 877th founding anniversary are pictured in Moscow, Russia, Sept. 8, 2024. A series of events were held on this weekend to celebrate Moscow City Day and to mark the city's 877th founding anniversary. (Photo by Alexander Zemlianichenko Jr/Xinhua)