Aerial photo taken on Jan. 1, 2020 shows China's polar icebreaker Xuelong 2, or Snow Dragon 2, conducting scientific research in the Cosmonauts Sea. (Xinhua/Liu Shiping)
Aerial photo taken on Jan. 1, 2020 shows China's polar icebreaker Xuelong 2, or Snow Dragon 2, conducting scientific research on water environment in the Cosmonauts Sea. (Xinhua/Liu Shiping)