Amphibious dock landing ship Changbaishan (Hull 989) and Jing'gangshan (Hull 999), along with 3 Landing Craft Air Cushions (LCAC), attached to a landing ship flotilla with the South China Sea Fleet under the Chinese People’s Liberation Army (PLA) Navy, steam in waters off the Xisha Islands during the maritime coordinative training from March 6 to 11, 2019. The training subjects included the LCACs' in and out of the mother ship, formation movement, ship-borne helicopter take-off and landing, and replenishment-at-sea. (eng.chinamil.com.cn/Photo by Liu Jian)