Giant panda "Kaikai" enjoys his birthday cake in Macao Special Administrative Region, south China, Aug. 23, 2015. Children were invited to celebrate giant panda Kaikai's 7th birthday here on Sunday. (Photo: Xinhua/Yang Yi)
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Giant panda "Kaikai" enjoys his birthday cake in Macao Special Administrative Region, south China, Aug. 23, 2015. Children were invited to celebrate giant panda Kaikai's 7th birthday here on Sunday. (Photo: Xinhua/Yang Yi)
