Tourists visit 21st edition of Ice-Snow World in Harbin

A tourist visits the 21st edition of Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Photo by Zhang Tao/Xinhua)

People visit the 21st edition of Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Photo by Zhang Tao/Xinhua)

People visit the 21st edition of Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Photo by Zhang Tao/Xinhua)

A woman poses for photos during the 21st edition of Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Photo by Zhang Tao/Xinhua)

People pose for photos during the 21st edition of Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Photo by Xie Jianfei/Xinhua)

An aerial view of the 21st edition of Ice-Snow World is seen in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Photo by Xie Jianfei/Xinhua)