Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission (CMC), boards the aircraft carrier Shandong and reviews the guards of honor at a naval port in Sanya, south China's Hainan Province, Dec. 17, 2019. Xi attended the commissioning ceremony of China's first domestically built aircraft carrier, the Shandong, here Tuesday afternoon. The new aircraft carrier, named after Shandong Province in east China, was delivered to the People's Liberation Army (PLA) Navy and placed in active service Tuesday at the naval port. (Xinhua/Li Gang)