Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday. (Photos: Xinhua)

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists take photos at the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists take photos at the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists take photos at the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.

Tourists visit the Harbin Ice-Snow World in Harbin, northeast China's Heilongjiang Province, Jan. 2, 2021. The Harbin Ice-Snow World attracted many visitors during the New Year's holiday.