Introduction to the ancient cannon: The Baiyushan ancient cannon is located at the corner of the mountainside on the south road of Baiyushan. It is a cannon purchased from Germany in 1881 by the Qing Dynasty, with a caliber of 210 mm. During the Russo-Japanese War, in order to strengthen the defense of the Lushunkou Fortress, the Tsarist Russian army moved the cannon from the Laohuwei West Jiguanshan Fort to the top of Laotieshan Mountain. In February 1908, the Japanese army placed this gun in Baiyu Mountain.