Cadets of Moscow Military Music College perform near the Kazansky train station to celebrate the Children's day in Moscow, Russia, June 1, 2019. (Xinhua/Evgeny Sinitsyn)

Cadets of Moscow Military Music College perform near the Kazansky train station to celebrate the Children's day in Moscow, Russia, June 1, 2019. (Xinhua/Evgeny Sinitsyn)

Cadets of Moscow Military Music College perform near the Kazansky train station to celebrate the Children's day in Moscow, Russia, June 1, 2019. (Xinhua/Evgeny Sinitsyn)