Russian and Chinese winter swimmers show their diving skills in Harbin, capital of northeast China's Heilongjiang province, Jan 25, 2012. A joint performance of winter swimming was given by Chinese and Russian swimmers in Harbin during the Spring Festival holiday, to celebrate the Chinese Lunar New Year, which fell on Jan 23 this year.[Photo/Xinhua]

A Russian winter swimmer shows his diving skills in Harbin, capital of northeast China's Heilongjiang province, Jan 25, 2012. A joint performance of winter swimming was given by Chinese and Russian swimmers in Harbin during the Spring Festival holiday, to celebrate the Chinese Lunar New Year, which fell on Jan 23 this year.[Photo/Xinhua]

Russian winter swimmers wearing dragon-shaped ornaments on their heads greet visitors in Harbin, capital of northeast China's Heilongjiang province, Jan 25, 2012. A joint performance of winter swimming was given by Chinese and Russian swimmers in Harbin during the Spring Festival holiday, to celebrate the Chinese Lunar New Year, which fell on Jan 23 this year.[Photo/Xinhua]

Russian winter swimmers wearing dragon-shaped ornaments on their heads greet visitors in Harbin, capital of northeast China's Heilongjiang province, Jan 25, 2012. A joint performance of winter swimming was given by Chinese and Russian swimmers in Harbin during the Spring Festival holiday, to celebrate the Chinese Lunar New Year, which fell on Jan 23 this year.[Photo/Xinhua]