Research team members have lunch at a dock of the Great Wall Station in Antarctica, Jan. 4, 2017. Chinese research vessel and icebreaker Xuelong (Snow Dragon) on Jan. 4 arrived in the Maxwell Bay, some 2 kilometerss away from the Great Wall Antarctic research station, and began its unloading task. Xuelong was on its 33rd Antarctic expedition. (Xinhua/Rong Qihan)