In this undated file photo, Gu Songfen (C) works with his colleagues at a laboratory. Gu Songfen, winner of China's top science award, is an aircraft designer at the Aviation Industry Corporation of China, Ltd. (AVIC), the nation's leading aircraft maker. Born in 1930, Gu is an academician at both the Chinese Academy of Sciences (CAS) and the Chinese Academy of Engineering. Leading the development of China's J-8 and J-8 II fighter jets, Gu has made contributions to the country's advancement in aviation weaponry and equipment. (Xinhua)
