Chinese President Hu Jintao (C, front), also chairman of the Central Military Commission (CMC), and Premier Wen Jiabao (3rd R, front) attend the aircraft carrier handover ceremony held at a naval base in Dalian, northeast China's Liaoning Province, Sept. 25, 2012. China's first aircraft carrier "Liaoning" was delivered and commissioned to the Navy of the Chinese People's Liberation Army (PLA) Tuesday after years of refitting and sea trials. CMC Vice Chairmen Guo Boxiong (3rd L, front) and Xu Caihou (2nd R, front), State Council Secretary-General Ma Kai (2nd L, front), director of the PLA's General Armament Department Chang Wanquan (1st R, front) and Navy Commander Wu Shengli (1st L, front) also attended the ceremony. (Xinhua/Zha Chunming)