Sculptors carve a snow sculpture with "happy pigs" theme at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 12, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

Sculptors carve a snow sculpture with "happy pigs" theme at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 13, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

Sculptors carve a snow sculpture with "happy pigs" theme at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 14, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

A snow sculpture with "happy pigs" theme is seen at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 17, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

Sculptors carve a snow sculpture with "happy pigs" theme at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 13, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

A snow sculpture with "happy pigs" theme is seen at Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 17, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

Sculptors carve a snow sculpture with "happy pigs" theme at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 13, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)

Sculptors carve a snow sculpture with "happy pigs" theme at the Sun Island International Snow Sculpture Art Expo park in Harbin, capital of northeast China's Heilongjiang Province, Dec. 14, 2018. The sculpture is composed of three pigs to greet the approaching Chinese Lunar Year of the Pig. (Xinhua/Wang Jianwei)