Recently, a destroyer detachment of the northern theater Navy, Huainan ship, Kaifeng ship and Wuhu ship, formed a ship formation and conducted a three-day training assessment. In this assessment, more than 10 main assessment contents were set in detail, such as emergency preparation for war and navigation, sea artillery attack, submarine search and attack, which tested the commander's tactical application and comprehensive disposal ability under the condition of actual combat. (Photo Report by Qian Hao, Yang Mingyi and Liu Xingxing) Huainan ship in navigation Auxiliary gun firing Auxiliary gun firing Jamming projectile launch Main gun firing Main gun firing Ship aircraft cooperation (Xinhua News Agency)