Giant panda Tuantuan eats bamboo shoot in Taipei Zoo of Taipei, southeast China's Taiwan Province, Jan. 24, 2010. A party is held in the zoo on Sunday celebrating the one year anniversary of the first public appearance of the Giant pandas Tuantuan and Yuanyuan in Taiwan. The two pandas arrived in Taipei Zoo on Dec. 23, 2008 and made the first appearance on Jan. 24, 2009. (Xinhua/Wu Ching-teng)

Giant panda Yuanyuan scratches itself in Taipei Zoo of Taipei, southeast China's Taiwan Province, Jan. 24, 2010.  (Xinhua/Wu Ching-teng)

Guests attend the party celebrating the one year anniversary of the first public appearance of pandas Tuantuan and Yuanyuan, in Taipei Zoo of Taipei, southeast China's Taiwan Province, Jan. 24, 2010. (Xinhua/Wu Ching-teng)

Director of Taipei Zoo (2nd R) cuts open the cake in Taipei Zoo of Taipei, southeast China's Taiwan Province, Jan. 24, 2010.  (Xinhua/Wu Ching-teng)

Visitors take photos of giant panda Tuantuan in Taipei Zoo of Taipei, southeast China's Taiwan Province, Jan. 24, 2010.  (Xinhua/Wu Ching-teng)

Giant panda Yuanyuan eats fresh bamboo in Taipei Zoo of Taipei, southeast China's Taiwan Province, Jan. 24, 2010. (Xinhua/Wu Ching-teng)