Introduction to the dual main guns of the Jiyuan ship: The "Jiyuan" ship is a dome-armored cruiser of the Beiyang Navy. It was ordered at the Vulcan Shipyard in Germany. It has experienced the Battle of Toshima on July 25, 1894 and the Yellow Sea on September 17. Great war. On February 17, 1895, the "Jiyuan" ship was captured by the Japanese army and incorporated into the Japanese Combined Fleet. It participated in the Russo-Japanese War in 1904. On November 30 of the same year, it struck a mine outside Port Arthur and blew up and sank. The two main guns in front of the ship sank to the bottom of the sea. On the afternoon of July 25, 1992, the twin main guns in front of the "Jiyuan" ship were transported to the Liugong Island Iron Wharf by the Yantai Maritime Salvage Bureau and became the "treasure of the museum".