Photo taken on Feb. 6, 2016 shows the McMurdo Station of the United States in Antarctica. It's the first time that team members of Chinese scientific research of the 32nd Antarctic expedition visited the McMurdo Station. (Xinhua/Zhu Jichai)

Team members of Chinese scientific research of the 32nd Antarctic expedition visit the McMurdo Station of the United States in Antarctica, Feb. 6, 2016. It's the first time Chinese researchers visited the McMurdo Station. (Xinhua/Zhu Jichai)

Team members of Chinese scientific research of the 32nd Antarctic expedition visit the McMurdo Station of the United States in Antarctica, Feb. 6, 2016. It's the first time Chinese researchers visited the McMurdo Station. (Xinhua/Zhu Jichai)

Photo taken on Feb. 6, 2016 shows the Chinese icebreaker "Xuelong", or Snow Dragon, stops at the McMurdo Sound on the Ross Sea in Antarctica. The icebreaker reached the Ross Sea for scientific research. (Xinhua/Zhu Jichai)

Photo taken on Feb. 6, 2016 shows the Mount Erebus on the Ross Island in Antarctica. The Chinese icebreaker "Xuelong", or Snow Dragon, reached the Ross Sea for scientific research. (Xinhua/Zhu Jichai)

Photo taken on Feb. 6, 2016 shows the Chinese icebreaker "Xuelong", or Snow Dragon, stops on the Ross Sea in Antarctica. The icebreaker reached the Ross Sea for scientific research. (Xinhua/Zhu Jichai)

Photo taken on Feb. 6, 2016 shows clouds over the Mount Erebus on the Ross Island in Antarctica. The Chinese icebreaker "Xuelong", or Snow Dragon, reached the Ross Sea for scientific research. (Xinhua/Zhu Jichai)