Aerial photo taken on Jan 13, 2019 shows the camp of one of two inland expedition teams on China’s 35th Antarctic expedition (L), China’s Kunlun Station (C), and the drilling equipment (R) at the Kunlun Station in Antarctica. [Photo/Xinhua]

Fan Xiaopeng (L), a member of one of two inland expedition teams on China’s 35th Antarctic expedition, operates the drilling equipment at the Kunlun Station in Antarctica, Jan 12, 2019. [Photo/Xinhua]

Photo taken on Jan 12, 2019 shows the newly-drilled ice core on China’s 35th Antarctic expedition at the Kunlun Station in Antarctica. [Photo/Xinhua]

Members of one of two inland expedition teams on China’s 35th Antarctic expedition handle the newly-drilled ice core at the Kunlun Station in Antarctica, Jan 12, 2019. [Photo/Xinhua]

A member of one of two inland expedition teams on China’s 35th Antarctic expedition works at the Kunlun Station in Antarctica, Jan 6, 2019. [Photo/Xinhua]