Sailors in Mission-Oriented Protective Posture (MOPP) gears conduct chemical decontamination wash down aboard the guided-missile frigate Huangshi (Hull 502) during a three-day maritime training exercise conducted by a frigate flotilla with the navy under the PLA Northern Theater Command from January 8 to 10, 2019. (eng.chinamil.com.cn/Photo by Wang Guangjie and Li Wenlu)