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Panda twins Mao Zhu and Mao Sun pose for a picture at the Chengdu Research Base of Giant Panda Breeding on Nov. 20, 2014. The panda twin brother and sister got their new names collected from a public poll. [Photo/Xinhua]
![PPanda twins Mao Zhu and Mao Sun pose for a picture at the Chengdu Research Base of Giant Panda Breeding on Nov. 20, 2014. The panda twin brother and sister got their new names collected from a public poll. [Photo/Xinhua]](http://images.chinagate.cn/attachement/jpg/site1021/20141121/00261854d72915d9256636.jpg "PPanda twins Mao Zhu and Mao Sun pose for a picture at the Chengdu Research Base of Giant Panda Breeding on Nov. 20, 2014. The panda twin brother and sister got their new names collected from a public poll. [Photo/Xinhua]")