The picture shows the Xiangshan North Fishing Mountain Lighthouse. (Provided by the Municipal Cultural Insurance Institute) Among the coastal lighthouses in eastern Zhejiang, the Qiliyu Lighthouse, which was first built in 1865, is one of the earliest two modern lighthouses in China. The rest was built before 1911. Most of the coastal lighthouses in eastern Zhejiang were designed and built by Europeans. They reflect the latest navigation technology and building technology at that time. They incorporate the unique ideas of design builders for lighthouse functions such as navigation, lighting, moisture, ventilation, and lookout. The rational use of architectural elements such as sturdiness, beauty and durability is the epitome of European architectural art and provides an important example for studying European architectural art. The distribution of lighthouses along the coast of eastern Zhejiang has formed a complete system that provides vital navigational aid for maritime navigation and ensures the safety of vessels. During the development of more than one hundred years, the coastal lighthouses in eastern Zhejiang guarded the entrance and exit of the north-south navigation trunk line on the southeast coast of China, witnessed the important development process of the world's marine culture, and was the crystallization of the intersection of historical lighthouse culture and modern civilization. The Zhedong Coastal Lighthouse is a tower-shaped luminous beacon between the key areas of the sea channel between Shanghai and Fujian. It is a fixed navigation mark used to guide ships to navigate or indicate dangerous areas. It is still in use today and is a living cultural relic. . The coastal lighthouse in Zhedong not only preserves the lighthouse body, but also preserves the facilities such as whistle, fog, and attached houses, which is the overall preservation of the navigation mark system.