Tourists pose for photos in front of a snow sculpture at the Sun Island International Snow Sculpture Art Expo in Harbin, capital of northeast China's Heilongjiang Province, January 31, 2015. More tourists visit the snow and ice amusements in Heilongjiang Province this year. Photo: Xinhua

Tourists visit the Harbin Ice and Snow World in Harbin, capital of northeast China's Heilongjiang Province, January 5, 2015. More tourists visit the snow and ice amusements in Heilongjiang Province this year. Photo: Xinhua

A tourist looks at a gigantic snow sculpture of Newton at the Sun Island International Snow Sculpture Art Expo in Harbin, capital of northeast China's Heilongjiang Province, January 6, 2015. More tourists visit the snow and ice amusements in Heilongjiang Province this year. Photo: Xinhua

Newlyweds take part in a group wedding ceremony at the Harbin Ice Lantern Exhibition in Harbin, capital of northeast China's Heilongjiang Province, January 6, 2015. More tourists visit the snow and ice amusements in Heilongjiang Province this year. Photo: Xinhua