Aerial photo shows tourists visiting the Harbin Ice-Snow World in Harbin, Northeast China's Heilongjiang province, Dec 25, 2021. The 23rd Harbin Ice-Snow World opened to the public on Saturday. (Photos: Xinhua)

Aerial photo shows tourists visiting the Harbin Ice-Snow World in Harbin, Northeast China's Heilongjiang province, Dec 25, 2021.

A performer gestures at the Harbin Ice-Snow World in Harbin, Northeast China's Heilongjiang province, Dec 25, 2021.

A tourist visits the Harbin Ice-Snow World in Harbin, Northeast China's Heilongjiang province, Dec 25, 2021.

Tourists pose for photos at the Harbin Ice-Snow World in Harbin, Northeast China's Heilongjiang province, Dec 25, 2021.

A tourist takes photos at the Harbin Ice-Snow World in Harbin, Northeast China's Heilongjiang province, Dec 25, 2021.