Workers pose with giant panda "Ping Ping" as they celebrate the birthday of giant panda twins "Ping Ping" and "An An" at the Bifengxia breeding base in Ya'an City of southwest China's Sichuan Province, July 6, 2009. [Jiang Hongjing/Xinhua]
(Xinhua News Agency July 7, 2009)
![Workers pose with giant panda 'Ping Ping' as they celebrate the birthday of giant panda twins 'Ping Ping' and 'An An' at the Bifengxia breeding base in Ya'an City of southwest China's Sichuan Province, July 6, 2009. [Jiang Hongjing/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090707/000bcdb95f1d0bbcddde05.jpg "Workers pose with giant panda 'Ping Ping' as they celebrate the birthday of giant panda twins 'Ping Ping' and 'An An' at the Bifengxia breeding base in Ya'an City of southwest China's Sichuan Province, July 6, 2009. [Jiang Hongjing/Xinhua]")
