A woman pushes a baby stroller on a road in Moscow, Russia, on Oct. 4, 2021. (Xinhua/Evgeny Sinitsyn)

A man rides his bike near Moscow State University in Moscow, Russia, on Oct. 4, 2021. (Xinhua/Evgeny Sinitsyn)

Photo taken on Oct. 4, 2021 shows a view in Moscow, Russia. (Xinhua/Evgeny Sinitsyn)

Photo taken on Oct. 4, 2021 shows red leaves on a tree in Moscow, Russia. (Xinhua/Evgeny Sinitsyn)