Central Military Commission Chairman Xi Jinping, also Chinese president and general secretary of the Communist Party of China Central Committee, inspects the honor guards of the Chinese People's Liberation Army (PLA) Navy after boarding Xining destroyer in Qingdao, April 23, 2019. (PHOTO / XINHUA)

PLA Navy honor guards are seen at the Xining destroyer prior to the starting of the sea parade marking the 70th anniversary of the Chinese navy, in Qingdao, April 23, 2019. (PHOTO / XINHUA)

The honor guards of the Chinese People's Liberation Army (PLA) Navy stand in formation before a naval parade staged to mark the 70th founding anniversary of the PLA Navy at a pier in Qingdao, east China's Shandong Province, on April 23, 2019.  (PHOTO / XINHUA)

A nuclear submarine is reviewed by Chairman of the Central Military Commission Xi Jinping (not in frame) in Qingdao on April 23, 2019. (PHOTO / XINHUA)

The guided-missile destroyer Changchun of the Chinese People's Liberation Army (PLA) Navy is reviewed during a naval parade staged to mark the 70th founding anniversary of the PLA Navy on the sea off Qingdao, east China's Shandong Province, on April 23, 2019. (PHOTO / XINHUA)

Guided missile destroyer Guiyang is reviewed during the Chinese naval parade off Qingdao, April 23, 2019. (PHOTO / XINHUA)

Guided missile destroyer Nanchang is reviewed during the Chinese naval parade off Qingdao, April 23, 2019. (PHOTO / XINHUA)

Aerial photo taken on April 23, 2019 shows the landing ship Yimengshan of the Chinese People's Liberation Army (PLA) Navy on the sea off Qingdao, east China's Shandong Province. A naval parade was staged here to mark the 70th founding anniversary of the PLA Navy on Tuesday. (JU ZHENHUA / XINHUA)

Aerial photo taken on April 23, 2019 shows a new type of nuclear submarine of the Chinese People's Liberation Army (PLA) Navy on the sea off Qingdao, east China's Shandong Province. A naval parade was staged here to mark the 70th founding anniversary of the PLA Navy on Tuesday. (JU ZHENHUA / XINHUA)