
Researchers on Chinese icebreaker Xuelong 2 release a weather balloon for meteorological observation during China's 36th Antarctic expedition, Jan. 11, 2020. (Xinhua/Liu Shiping)

Researchers on Chinese icebreaker Xuelong 2 release a weather balloon for meteorological observation during China's 36th Antarctic expedition, Jan. 11, 2020. (Xinhua/Liu Shiping)