The guided-missile frigate Changzhou (Hull 549) and the guided-missile destroyer Jinan (Hull 152) attached to a destroyer flotilla with the navy under the PLA Eastern Theater Command, steam in formation in waters of the East China Sea during a maritime training exercise on January 20, 2021. Training items including main-gun live-fire operations, comprehensive assault and defense, joint search and rescue are practiced during the exercise. (eng.chinamil.com.cn/Photo by Fang Sihang)