Dancers perform during a celebration held in Shanghai's Luwan Gymnasium on Tuesday night, April 29, 2008, marking the 100-day countdown of the 29th Olympic Games.(Xinhua Photo)

People perform Taijiquan in Luoyang, a city of central China's Henan Province, April 29, 2008. Different cities in Henan held public health-keeping activities to greet the 100-day countdown of the Beijing 2008 Olympic Games on Tuesday. (Xinhua Photo)

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