Chinese President Hu Jintao, who is also General Secretary of the Communist Party of China (CPC) Central Committee and chairman of the Central Military Commission, addresses at the academician conference of the Chinese Academy of Sciences (CAS) and the Chinese Academy of Engineering (CAE) at the Great Hall of the People in Beijing, capital of China, June 5, 2006. The four-day, 13th CAS conference and eighth CAE conference were opened simultaneously on June 5.