A worker holds one of the twin panda cubs given birth by their mother Haizi at the China Conservation and Research Center for the Giant Panda at the Wolong Nature Reserve in Wenchuan County, Southwest China's Sichuan Province, June 22, 2013. The giant panda successfully gave birth to twins on Saturday, the first pair ever born globally this year. One cub is a female and weighs 79.2 grams. [Photo: CNS/Zhou Jing]