"Puzhuang Lock City" is a well-preserved defense system against Japanese pirates in Ming Dynasty. 1996 was listed as a national cultural relics protection unit. Pucheng was originally along the corner of Puwan, and gradually became a beach with calamus and reeds because of tidal fluctuation and sediment deposition. /kloc-more than 0/500 years ago, the ancestors who came here to settle the field took the leaves of Pu as the door and got the name of "Pumen". In order to resist the Japanese invasion, in the 17th year of Ming Hongwu (1384), the 1,000th household stationed in Xia Ji presided over the construction of Pucheng City Wall at the foot of Longshan Mountain, which was completed three years later and renamed as Pucheng. In the eighth year of orthodoxy (1443), after the merger of the "home of strong men" in Wucheng, it was collectively called the "home of Puzhuang".

"Puzhuang Town" faces the sea to the north, with a wall circumference of 2km, a height of 4.5-7m, a bottom width of 8-12m and a top width of 4-8m. There are three gates in the southeast and west, all of which are made of earthenware pots and towers. There are six enemy towers and the city gate is 6 1 1.

The plane of "Puzhuang Lock City" is an irregular rectangle, and the infrastructure structure is extremely reasonable. When completed, it is centered on the cornerstone, extending eastward to Cross Street, and turning to Dongchengmen via Hengjie to become Dongmen Street, with a length of 305 meters and a width of 4.5 meters. Extending southward to the south gate is Nanmen Street, with a length of 142m and a width of 4m. Ximen Street extends westward to Xichengmen, with a length of 183m and a width of 4m. The Chenghuang Temple extends northward to the foot of Longshan, that is, Cang Qian Street, which is 149 meters long and 2.4 meters wide. The streets and lanes in the city are designed around the shape of "Tian", which are neatly arranged and connected with each other. Other small streets are subdivided into "Tian"-shaped squares and spread back into four streets, connecting the central street with the ring road, forming the road network of the town. Narrow and deep roads are paved with stones and pebbles, and the streets and alleys in the city have hardly changed so far. As the old saying goes: "One pavilion, two pavilions, three archways, three gates, four lanes, seven security halls, east, west, north and south cross streets, twenty-four ancient wells and eight stages." The historical sites of this city include Wenchang Pavilion, Torinji and Zhuxi Temple. Among them, Shecang Lane, Tiexie Bureau and Mafang Lane in the southwest corner of the city were the logistics equipment areas at that time. Happy Valley Road, which is built close to the southeast and the inner side of the west wall, is the main channel for the defenders in the city to travel between the city gate, the tower, the enemy platform and the urn.

"Puzhuang Town" has three gates: east, south and west. The main entrance Weiyuanmen 1987 was renovated and restored in summer. The Ming Dynasty is a spectacular toothed mound, all piled up by stones of similar size and shape, with enemy platforms on both sides, and its structure is very prominent. The front of the tower is surrounded by walls on three sides, with a width of19.6m and a depth of 26.9m, covering an area of more than 500m2, forming a square urn with a gate at the bottom and a gate at the right, which is used to lure wolves into the house and close the door to beat dogs in wartime. Above the East Gate, there is Dongcheng Building, also known as Angelababy Building. The existing tower was rebuilt later, showing a brief introduction to the historical sites of local celebrities since the Song Dynasty. On the right side of the tower stand three stone tablets, which record the history of Pucheng.

The south gate is also called Zhengyangmen. The two walls of the gate are wrapped with stones, and the interior is tamped with solid and gravel. It is 2.26-3.2m wide, with a penetration depth of11.8m and a height of 4.8m. It is built on the Tajukui Building. The entrance of the original two-story arched ticket gate has been destroyed. The west gate, also known as the Eight Immortals Gate, is 2. 1 m wide and 5.55 m deep, and is divided into two floors. Between the two arches, the two Liang Shi crosses and the two ends are inserted into the city wall respectively. There is no smoke mound in Nanbaoling outside the city, which is divided into Qikui Mountain from north to south. Dajianshan, Duimian Mountain and Xiaguan Yandun.