People visit the Harbin Sun Island International Snow Sculpture Art Exposition in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2022. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)

Aerial photo taken on Jan. 2, 2022 shows tourists visiting the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province on Jan. 2, 2022. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)

A woman poses for a photo with a snow-clad house in the background at the square of the Flood Control Monument in Harbin, northeast China's Heilongjiang Province, Jan. 1, 2022. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Wang Jianwei)

Aerial photo taken on Jan. 2, 2022 shows tourists visiting the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)

Aerial photo taken on Jan. 2, 2022 shows tourists visiting the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)

People walk on the Harbin Central Street in Harbin, northeast China's Heilongjiang Province, Jan. 1, 2022. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Wang Jianwei)

Aerial photo taken on Jan. 2, 2022 shows tourists visiting the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)

Aerial photo taken on Jan. 2, 2022 shows tourists visiting the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province. Harbin, famous for its ice and snow tourism, attracts tourists during the winter time. (Xinhua/Zhang Tao)