The forward Vertical Launching System(VLS) aboard the guided-missile frigate Xiangtan (Hull 531) is pictured during an anti-submarine training exercise jointly conducted by frigates Xiangtan (Hull 531) and Binzhou (Hull 515) and ship-borne helicopters in an undisclosed sea area of the East China Sea on June 29, 2017. (eng.chinamil.com.cn/Photo by Zhang Qian)
Source：China Military Online
