The guided-missile frigate Hengyang (Hull 568) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command fires its close-in weapons system at a mock sea target during a maritime live-fire training exercise in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

The guided-missile frigate Hengyang (Hull 568) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command fires its main gun against mock ashore targets during a maritime live-fire training exercise in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

Sailors wearing anti-flash gears to inspect and repair the operating equipment during a damage control operation aboard the guided-missile frigate Hengyang (Hull 568) during a maritime training exercise conducted by a destroyer flotilla with the navy under the PLA Southern Theater Command in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

The Type 054A guided-missile frigate Yulin (Hull 569) and the Type 052D guided-missile destroyer Hohhot (Hull 161) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command steam in a stern formation during a maritime maneuver operation in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Hongming)

The Type 054A guided-missile frigate Yulin (Hull 569) and the Type 052D guided-missile destroyer Hohhot (Hull 161) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command steam in a stern formation during a maritime maneuver operation in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Hongming)

The guided-missile frigate Hengyang (Hull 568) and the guided-missile destroyer Wuhan (Hull 169) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command steam alongside with each other during a maritime maneuver operation in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

The guided-missile frigate Hengyang (Hull 568) and the guided-missile destroyer Wuhan (Hull 169) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command steam alongside with each other during a maritime maneuver operation in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

The guided-missile frigate Hengyang (Hull 568) and the guided-missile destroyer Wuhan (Hull 169) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command steam alongside with each other during a maritime maneuver operation in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

The guided-missile frigate Hengyang (Hull 568) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command fires chaff rounds from the decoy launching system to deploy electromagnetic smoke during a maritime live-fire training exercise in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)

The guided-missile frigate Hengyang (Hull 568) and the guided-missile destroyer Wuhan (Hull 169) attached to a destroyer flotilla with the navy under the PLA Southern Theater Command steam alongside with each other during a maritime maneuver operation in waters of the South China Sea on June 18, 2020. (eng.chinnmil.com.cn/Photo by Li Wei)