Couples attend a group wedding at "Harbin Ice and Snow World"- a theme park in Harbin, Heilongjiang, on Jan 20, 2013. Harbin has been using its winter resources to develop its tourism industry for many years. During the Harbin International Ice and Snow Festival last year, the city attracted more than 13 million tourists and the general income from tourism reached 13 billion yuan.[Photo/Xinhua] 

Tourists take pictures at "Harbin Ice and Snow World"- a theme park in Harbin, Heilongjiang, on Jan 20, 2013. Harbin has been using its winter resources to develop its tourism industry for many years. During the Harbin International Ice and Snow Festival last year, the city attracted more than 13 million tourists and the general income from tourism reached 13 billion yuan.[Photo/Xinhua]