China's polar icebreaker Xuelong, or Snow Dragon, prepares to dock at the port of Hobart, Australia, Nov. 7, 2019. China's polar icebreaker Xuelong 2, or Snow Dragon 2, docked at the port of Hobart on Nov. 4. Both Xuelong and Xuelong 2 joined the country's 36th Antarctic expedition, marking the first time for two polar icebreakers to work together on China's Antarctic expedition. After their first encounter in Hobart, the two icebreakers will meet again at the Zhongshan Station. (Xinhua/Liu Shiping)