Hulishan Fortress was built in 1891, occupying an area of 13,000 square meters. It fully reserves the ancient military facilities such as the emplacement, the barracks, the castle, the secret tunnel, the trench, the ammunition depot and the drill ground etc. all its buildings distinctively reserve the military style of the Ming Dynasty and that of the Qing Dynasty besides the construction structure referring to the Europe King Fortresses. It also possesses local characteristics. They East Fortress is still holding a huge cannon made by Krupp Company of Germany. The caliber of the cannon is 280 mm, the whole length of the cannon is 13.96 meters, the weight of the cannon is 59,888 kilograms and the maximum range of fire of the cannon is 10,460 meters. Though it has endured one hundred years of erosion by wind and rain, it is still in good condition. It is the only cannon of the same type being left in the world. It really can be called "King of the Cannon in the World" and is really a precious historical relic. In recent years, the Hulishan Fortress collected several batches of ancient cannons of the Ming Dynasty and the Qing Dynasty in order top develop the tourism resources. More than fifty ancient mighty cannons of various types are formed into several ancient cannon square arrays. They surround the "King of the Cannon in the World" just like a myriad of stars surrounding the moon making a vivid representation of the stately appearance of its "Deterrent in the Southeast China". Now the barracks have been changed into exhibition halls of ancient cannons, double-edged swords, rare stones and firelocks