Chinese Navy's supply vessel Chaohu tries to replenish fuel for the destroyer Changchun (not in picture) in western Indian Ocean waters on Aug. 25, 2017. A Chinese naval formation consisting of the destroyer Changchun, guided-missile frigate Jingzhou and supply vessel Chaohu conducted a live-fire drill in the waters of the western Indian Ocean, military sources said Friday. (Xinhua/Xu Shouming)
