A tourist in costume poses for a photo at a square of architecture art in Harbin, northeast China's Heilongjiang Province, Dec. 15, 2025. The square, where the landmark St. Sophia Cathedral, a former Russian Orthodox church and a perfect example of Neo-Byzantine architectures, is located, has become a hot spot for tourists to take travel photos. (Xinhua/Wang Song)

A tourist in costume poses for a photo at a square of architecture art in Harbin, northeast China's Heilongjiang Province, Dec. 15, 2025. The square, where the landmark St. Sophia Cathedral, a former Russian Orthodox church and a perfect example of Neo-Byzantine architectures, is located, has become a hot spot for tourists to take travel photos. (Xinhua/Wang Song)

A tourist in costume poses for a photo at a square of architecture art in Harbin, northeast China's Heilongjiang Province, Dec. 15, 2025. The square, where the landmark St. Sophia Cathedral, a former Russian Orthodox church and a perfect example of Neo-Byzantine architectures, is located, has become a hot spot for tourists to take travel photos. (Xinhua/Wang Song)

A tourist in costume poses for a photo at a square of architecture art in Harbin, northeast China's Heilongjiang Province, Dec. 15, 2025. The square, where the landmark St. Sophia Cathedral, a former Russian Orthodox church and a perfect example of Neo-Byzantine architectures, is located, has become a hot spot for tourists to take travel photos. (Xinhua/Wang Song)