A penguin of Harbin Polarland stands next to a fish cake in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
Penguins of Harbin Polarland play outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
Penguins of Harbin Polarland play outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
A penguin of Harbin Polarland plays outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
Penguins of Harbin Polarland play outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
Penguins of Harbin Polarland play outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
Penguins of Harbin Polarland play outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)
Penguins of Harbin Polarland play outside in Harbin, northeast China's Heilongjiang Province, Dec. 24, 2018. (Xinhua/Cao Jiyang)