Hundreds of child triplets from throughout China celebrate the fourth birthday of the world's only giant panda triplets－Meng Meng, Shuai Shuai and Ku Ku－on Sunday at Chimelong Safari Park in Guangzhou by offering the trio fresh bamboo. [Photo/Xinhua]

Hundreds of child triplets from throughout China celebrate the fourth birthday of the world's only giant panda triplets－Meng Meng, Shuai Shuai and Ku Ku－on Sunday at Chimelong Safari Park in Guangzhou by offering the trio fresh bamboo. [Photo/Xinhua]

Hundreds of child triplets from throughout China celebrate the fourth birthday of the world's only giant panda triplets－Meng Meng, Shuai Shuai and Ku Ku－on Sunday at Chimelong Safari Park in Guangzhou by offering the trio fresh bamboo. [Photo/Xinhua]

Hundreds of child triplets from throughout China celebrate the fourth birthday of the world's only giant panda triplets－Meng Meng, Shuai Shuai and Ku Ku－on Sunday at Chimelong Safari Park in Guangzhou by offering the trio fresh bamboo. [Photo/Xinhua]