Chinese President Hu Jintao (R) presents a certificate to the mathematician Gu Chaohao, who won China's 2009 State Top Scientific and Technological Award, during a ceremony at the Great Hall of the People in Beijing, capital of China, on Jan. 11, 2010.[Xinhua] 

Chinese President Hu Jintao (R) presents a certificate to space scientist Sun Jiadong, who won China's 2009 State Top Scientific and Technological Award, during a ceremony at the Great Hall of the People in Beijing, capital of China, on Jan. 11, 2010.[Xinhua]