Introduction to coastal defense forest boundary monuments: In order to commemorate the great achievements of forest defense construction over the years, further promote the protection of coastal defense forests, and expand domestic and foreign influence, the State Forestry Ministry decided in 2000 to build northern and southern boundary monuments of coastal defense forests at the northern and southern ends of my country. One, the northern boundary monument is in Dandong City, Jilin Province, and the southern boundary monument is built in the forest belt of Wanwei Coast Defense Base in Dongxing City. The southern boundary monument was built in 2001. It is 16 meters high and covers an area of 30 acres. The three wings of the stele are shaped like the Chinese character "sen", and the raised sphere symbolizes the earth. It means that only by constructing a coastal protection forest system through artificial afforestation can we protect the earth, improve the earth's ecological environment, and resist coastal natural disasters. To arouse people's environmental awareness.