China's Snow and Ice Festival

Tourists visit ice sculptures on the night before the opening ceremony of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province January 4, 2012. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken January 4, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

A tourist records video on ice sculptures during the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY)

A horse carriage carrying tourists travels past ice sculptures during the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

Tourists visit ice sculptures during the testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT ENTERTAINMENT)

A horse carriage carrying tourists travels past ice sculptures during the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY TRAVEL)

Tourists visit ice sculptures during the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

Tourists visit ice sculptures during the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

An employee pulls a dog sled carrying tourists in front of a snow sculpture ahead of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 26, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY ANIMALS TPX IMAGES OF THE DAY)

A visitor sleighs down a snow slope near ice sculptures during the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

Tourists visit ice sculptures during the the lights testing period of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 25, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken December 25, 2011. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

Tourists take pictures in front of a snow sculpture ahead of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 26, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY)

Tourists walk past a coffee shop covered by shaped snow ahead of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 26, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY)

A tourist poses for a photograph in front of a snow sculpture depicting the famous painting "Barge Haulers on the Volga" ahead of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province December 26, 2011. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY)

A tourist slides down an ice sculpture on the night before the opening ceremony of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province January 4, 2012. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken January 4, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)

A performer takes a rest on a decoration during a rehearsal of the opening ceremony of 13th Harbin Ice and Snow World in Harbin, Heilongjiang province January 4, 2012. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken January 4, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL TPX IMAGES OF THE DAY)

Tourists visit ice sculptures on the night before the opening ceremony of the 13th Harbin Ice and Snow World in Harbin, Heilongjiang province January 4, 2012. The Harbin International Ice and Snow Festival will be officially launched on January 5, 2012. Picture taken January 4, 2012. REUTERS/Sheng Li (CHINA - Tags: ENVIRONMENT SOCIETY TRAVEL)