Photo taken on Sept. 28, 2010 shows workers feed the penguins in Haichang Polar Ocean Park in north China's Tianjin Municipality. (Xinhua/Wang Guangrong)

Photo taken on Sept. 28, 2010 shows a polar bear in Haichang Polar Ocean Park in north China's Tianjin Municipality. (Xinhua/Wang Guangrong)

Photo taken on Sept. 28, 2010 shows Russian actresses during an rehearsal performance in Haichang Polar Ocean Park in north China's Tianjin Municipality. (Xinhua/Wang Guangrong)