China's polar icebreaker Xuelong 2, or Snow Dragon 2, sails in the Southern Ocean before it crosses the prime meridian and enters the Western Hemisphere on Jan. 30, 2020. (Xinhua/Liu Shiping)
Xinhua Photos of the day (Jan. 31)
Source: Xinhua| 2020-01-31 13:22:54|Editor: huaxia
