Chinese icebreaker Xuelong, after an 85-day scientific quest across the Arctic ocean, is harboured in east China's Shanghai Municipality, Sept. 27, 2012. Xuelong, or "Snow Dragon", returned to its base in Shanghai on Thursday after wrapping up the country's fifth Arctic expedition, which kicked off from Qingdao in east China's Shandong Province on July 2. (Xinhua/Pei Xin)
