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FILE - In this photograph provided by the National Zoo, Tai Shan, the National Zoos giant panda cub, plays in a tree at his home at the zoo in this June 9, 2006 file photo. The cub turns one year old Sunday, July 9. The National Zoo's beloved giant panda cub, Tai Shan, will soon be heading to China. Zoo spokeswoman Karin Korpowski-Gallo says officials will announce Friday morning Dec. 4, 2009 that Tai Shan will be leaving the Smithsonian Institution park in Washington. Under the Smithsonian's panda loan agreement, any cub born at the zoo must be returned to China for breeding.