A helicopter carries navigational kerosene from China's Antarctic ice-breaker Xuelong, or Snow Dragon to China's Zhongshan Antarctic Station, on Nov. 26, 2008. Xuelong was blocked by thick ice around the Antarctica during her 25th expedition to Antarctica. To keep up with the schedule, the science expedition team began to send goods and materials by helicopter to China's Zhongshan Antarctic Station under good weather condition. [Xinhua]