The frigate Enshi (Hull 627), Yongzhou (Hull 628), Bazhong (Hull 625), and Wuzhou (Hull 626) steam in formation during a 9-day maritime training exercise in waters of the South China Sea in late November, 2020. They are attached to a frigate flotilla of the navy under the PLA Southern Theater Command. (eng.chinamil.com.cn/Photo by Zhang Bin)
