A philately lover shows commemorative stamps for the opening of the 17th National Congress of the Communist Party of China (CPC), in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Oct. 15, 2007. The 17th National Congress of CPC opened in Beijing on Monday. (Xinhua Photo)

Local residents buy commemorative stamps for the opening of the 17th National Congress of the Communist Party of China (CPC), in Harbin, capital of northeast China's Heilongjiang Province, Oct. 15, 2007. (Xinhua Photo)

Local residents buy commemorative envelopes and stamps for the opening of the 17th National Congress of the Communist Party of China (CPC), in Shijiazhuang, capital of north China's Hebei Province, Oct. 15, 2007. (Xinhua Photo)