Puzhuang City is located in Pucheng and Pucheng of Mazhan Town, Cangnan County, at the junction of Zhejiang and Fujian. It is a famous coastal defense castle in ancient China. Pucheng was originally along the corner of Puwan Bay. Because of tidal fluctuation and siltation, it gradually became a beach of calamus and reeds. More than 1500 years ago, the ancestors who came here to reclaim wasteland got the name "Pumen" by weaving Puye as a door. Since the Tang and Song Dynasties, it has been an important place to guard against Japanese aggressors. In the 17th year of Hongwu Ming Dynasty (1384), the first thousand households were stationed at the foot of Longshan to build the Pucheng Wall, which was renamed "Pucheng" three years later. Eight years of orthodoxy (1443), after the merger of Wucheng "Heroic Institute" into the city, collectively known as "Puzhuang City", now known as Pucheng. In 1996, the State Council promulgated it as a national key cultural relics protection unit, and then established a cultural relics protection and management institute.