Artists construct the "crown of snow" sculpture on the Sun Island in Harbin, northeast China's Heilongjiang province on Dec. 24, 2015. The sculpture is made of 30,000 cubic meters of snow, with a height of 51 meters and covers an area of 2,800 square meters. It is expected to be completed in early 2016. By then, it will be the highest snow building in the world. (Xinhua/Wang Jianwei)