The guided-missile destroyer Hefei (Hull 174) attached to a destroyer flotilla of the South China Sea Fleet under the PLA Navy fires its main gun at simulated targets during a live-fire training exercise in waters of the South China Sea in the evening of May 27, 2017. The guided-missile frigate Sanya (Hull 574) and the guided-missile destroyers Lanzhou (Hull 170) and Changsha (Hull 173) also participated in the training. (Photo/eng.chinamil.com.cn)
