Team members of China's 36th Antarctic expedition work on China's polar icebreaker Xuelong 2 in the Antarctica's Prydz Bay, Dec. 6, 2019. Team members of China's 36th Antarctic expedition conducted multidisciplinary observations and researches in Antarctica's Prydz Bay from Dec. 3, to Dec. 7. (Photos: Xinhua)

Emperor penguins walk near China's polar icebreaker Xuelong 2 in the Antarctica's Prydz Bay, Dec. 6, 2019.

Emperor penguins dive into the ocean in the Antarctica's Prydz Bay, Dec. 6, 2019.

Emperor penguins dive into the ocean in the Antarctica's Prydz Bay, Dec. 6, 2019.

Emperor penguins walk near China's polar icebreaker Xuelong 2 in the Antarctica's Prydz Bay, Dec. 6, 2019.