BEIJING, Jan. 11 (Xinhua) -- Two scientists from the Chinese Academy of Sciences received China's annual top science honor Monday for their outstanding contributions to scientific and technological innovation.

    Gu Chaohao, a mathematician, and space scientist Sun Jiadong won China's 2009 State Top Scientific and Technological Award, China's highest science honor.

    The two scientists were each awarded 5 million yuan (732,300 U.S. dollars). Chinese President Hu Jintao presented the certificates to the scientists at the Great Hall of the People in downtown Beijing.