Contestants carve an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)

Contestants carve an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)

A contestant carves an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)

A contestant carves an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)

A contestant carves an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)

Photo taken on Jan. 3, 2019 shows a part of an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province. (Xinhua/Wang Song)

Photo taken on Jan. 3, 2019 shows a part of an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province. (Xinhua/Wang Song)

A contestant carves an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)

Photo taken on Jan. 3, 2019 shows a part of an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province. (Xinhua/Wang Song)

Contestants carve an ice sculpture during an international ice sculpture competition in Harbin, capital of northeast China's Heilongjiang Province, Jan. 3, 2019. (Xinhua/Wang Song)