People look around a large snow sculpture ahead of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People walk around ice and snow sculptures ahead of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People walk around ice and snow sculptures during the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





Fireworks light up the sky behind ice and snow sculptures during the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





Fireworks light up the sky behind ice sculptures on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





Fireworks light up the sky behind ice sculptures on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People look at ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People walk past ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People walk past ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





People visit ice sculptures illuminated by coloured lights on the opening day of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





A large snow sculpture is seen ahead of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





A large snow sculpture is seen ahead of the Harbin International Ice and Snow Festival in the northern city of Harbin, Heilongjiang province, China, January 5, 2016. (Photo by Aly Song/Reuters)





Two policewomen chat in front of ice sculptures at the China Ice and Snow World during the Harbin International Ice and Snow Festival in Harbin, northeast China's Heilongjiang province on January 5, 2016. Over one million visitors are expected to attend the spectacular Harbin Ice Festival, where buildings of ice are bathed in ethereal lights and international ice sculptors compete for honours. (Photo by Wang Zhao/AFP Photo)





This picture shows a general view of the opening ceremony of the Harbin International Ice and Snow Festival at the China Ice and Snow World in Harbin, northeast China's Heilongjiang province on January 5, 2016. (Photo by Wang Zhao/AFP Photo)





Visitors carve characters on ice as they visit at the China Ice and Snow World during the Harbin International Ice and Snow Festival in Harbin, northeast China's Heilongjiang province on January 5, 2016. (Photo by Wang Zhao/AFP Photo)





Visitors enjoy riding on ice slides of large ice sculptures at Harbin ice and snow world during the opening ceremony of the 32nd Harbin International Ice and Snow Festival in Harbin city, China's northern Heilongjiang province, 05 January 2016. The festival runs from 05 January to 05 February. (Photo by Wu Hong/EPA)





People visit the ice sculptures illuminated by coloured lights at Harbin ice and snow world during the opening ceremony of the 32nd Harbin International Ice and Snow Festival in Harbin city, China's northern Heilongjiang province, 05 January 2016. (Photo by Wu Hong/EPA)





People visit the ice sculptures illuminated by coloured lights at Harbin ice and snow world during the opening ceremony of the 32nd Harbin International Ice and Snow Festival in Harbin city, China's northern Heilongjiang province, 05 January 2016. (Photo by Wu Hong/EPA)





Fireworks display over the ice sculptures at Harbin ice and snow world during the opening ceremony of the 32nd Harbin International Ice and Snow Festival in Harbin city, China's northern Heilongjiang province, 05 January 2016. (Photo by Wu Hong/EPA)





People visit a snow sculpture at the Harbin International Snow Sculpture Art Expo of the 32nd Harbin International Ice and Snow Festival, in Harbin, China's northern Heilongjiang province, 05 January 2016. (Photo by Wu Hong/EPA)





People dress up in animal costumes at the Harbin International Ice and Snow Sculpture Festival, January 1, 2016, in Harbin, China. (Photo by Tao Zhang/NurPhoto/Sipa USA/AP Photo)





The 32nd annual Ice and Snow Festival begins in Harbin, China, January 5, 2016. (Photo by AP Photo/Kyodo News)





Tourists visit the Harbin International Ice and Snow Sculpture Festival, January 1, 2016, in Harbin, China. (Photo by Tao Zhang/NurPhoto/Sipa USA/AP Photo)





Visitors view the ice sculptures at Harbin Ice and Snow Festival in Harbin City, China, January 4, 2016. (Photo by Wu Hong/EPA)





Visitors take a selfie in front of a snow sculpture at the Harbin International Ice and Snow Festival, in Harbin, China, January 5, 2016. (Photo by Wu Hong/EPA)





Entertainers in cartoon character costumes perform a dance in front of a snow sculpture at the Harbin International Ice and Snow Festival, in Harbin, China on January 5, 2016. (Photo by Wu Hong/EPA)





People visit snow and ice sculptures at the Harbin International Ice and Snow Festival in Harbin, China on January 5, 2016. (Photo by Wu Hong/EPA)





Visitors walk in front of a massive snow castle sculpture at the Harbin International Ice and Snow Festival held in the city of Harbin, located in China's northern Heilongjiang province, January 5, 2016. (Photo by Wu Hong/EPA)





People visit snow sculptures at the 32nd Harbin International Ice and Snow Festival in Harbin, China on January 5 2016. The festival is open from Jan. 5 till Feb. 5, 2016, and is aimed at attracting both foreign and local visitors to experience the beauty of the ice and snow. (Photo by Wu Hong/EPA)





A general view showing large ice sculptures at Harbin Ice and Snow Festival, one day before the opening in Harbin City, China, January 4, 2016. (Photo by Wu Hong/EPA)





A family drives a sleigh on the frozen Songhua River beside the Harbin International Ice and Snow Festival in Harbin, China, January 3, 2016. (Photo by Wang Zhou/Getty Images)





Vendors selling candied haws wait for customers at the Harbin Ice and Snow Festival in Harbin, China, January 4, 2016. (Photo by Wang Zhao/AFP Photo)





A woman rides a sleigh before the opening ceremony of the Harbin International Ice and Snow Festival in Harbin, China on January 4, 2016. (Photo by Wang Zhao/AFP Photo)





A vendor yawns as he waits for customers on the frozen Songhua River beside the Harbin International Ice and Snow Festival in Harbin, China, January 3, 2016. (Photo by Wang Zhao/AFP Photo)





People wait in line at the Harbin Ice and Snow Festival in Harbin, China, January 4, 2016. Over one million visitors are expected to attend the festival. (Photo by Wang Zhao/AFP Photo)