A four-vessel Chinese naval fleet comprised of the guided-missile destroyer Shijiazhuang (Hull 116), the guided-missile frigate Daqing (Hull 576), the comprehensive supply ship Dongpinghu (Hull 960) and the submarine rescue ship Changdao (Hull 867), arrives at a naval port in Russia's Vladivostok on Sept. 18, 2017. The second stage of the China-Russia Joint Sea - 2017 military exercise is scheduled to be held in Vladivostok from September 18 to 26, 2017. (Photo/eng.chinamil.com.cn)