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Tai Shan celebrates his fourth birthday in Washington D. C. on July 9,2009.
Tai Shan is a 4-year-old panda. He is a superstar at the National Zoo of Washington D. C. ,US. But the star panda is leaving the US soon to come back to China.
Tai Shan was born at the zoo on July 9,2005. He is the son of two pandas that China rented (租借) to the zoo. People in Washington D. C. love Tai Shan very much.
But Tai Shan is now old enough to breed. It is time for him to come back to China to help increase (增加) the panda population (数量).
