People collect ice from Songhua River in Harbin, NE China

Workers collect ice from the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Zhang Tao)

Workers prepare to cut ice on the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Wang Jianwei)

Workers collect ice from the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Zhang Tao)

This aerial photo shows an ice collecting festival on the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Xie Jianfei)

People cook fish during an ice collecting festival on the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Wang Jianwei)

People play with spinning tops during an ice collecting festival on the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Xie Jianfei)

Workers collect ice from the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Wang Jianwei)

People play with ribbons during an ice collecting festival on the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Zhang Tao)

A performance is staged before ice collecting from the Songhua River in Harbin, capital of northeast China's Heilongjiang Province, Dec. 7, 2023.

Ice cubes collected from the frozen Songhua River will be used in decoration of the city. (Xinhua/Wang Jianwei)