Fireworks explode to celebrate the Orthodox Christmas in St. Petersburg, Russia, Jan. 7, 2020. (Photo by Irina Motina/Xinhua)

Photo taken on Jan. 7, 2020 shows a festive view of St. Petersburg on the night of Orthodox Christmas in Russia. (Photo by Irina Motina/Xinhua)

A man performs during Orthodox Christmas celebrations in St. Petersburg, Russia, Jan. 7, 2020. (Photo by Irina Motina/Xinhua)

A man performs during Orthodox Christmas celebrations in St. Petersburg, Russia, Jan. 7, 2020. (Photo by Irina Motina/Xinhua)

People perform during Orthodox Christmas celebrations in St. Petersburg, Russia, Jan. 7, 2020. (Photo by Irina Motina/Xinhua)

People perform during Orthodox Christmas celebrations in St. Petersburg, Russia, Jan. 7, 2020. (Photo by Irina Motina/Xinhua)