As early as 50,000 years ago during the period of the Upper Cave Man, shells were strung into chains as decorations. From the Shang Dynasty to the Qin Dynasty, a type of shellfish was polished and perforated and used as currency for a long time. This is shell money. During the Spring and Autumn Period and the Warring States Period, shells were widely made into necklaces, arm ornaments, waist ornaments, clothing, etc., and even horse ornaments and car ornaments appeared. During the Spring and Autumn Period and the Warring States Period, 30% of the soldiers of the State of Lu used red threads to string shells as pendants to enhance military power. During the Qin and Han Dynasties, the improvement and popularization of smelting technology opened up new ways for shell carving. Artists used the color of shells to grind a relatively flat shell into thin slices, and then carved simple bird and animal patterns, and inlaid them on bronze ware, mirrors, screens, tables and chairs as decorations. This craft is commonly known as "snail inlay". This craft is still preserved in many areas. Around the Song and Yuan Dynasties, Chinese folk crafts such as mother-of-pearl inlay and shell stickers were very popular. There are various types of furnishings such as figures, animals, flowers, hanging screens, and various stationery, smoking utensils, table lamps and other daily necessities. Colorful, bizarre, and naturally beautiful. From the liberation to the 1970s and 1980s, shell carving workers from all over the country, on the basis of inheriting traditional crafts, paid attention to absorbing the strengths of ivory carving, jade carving, wood carving, and Chinese painting, combined with the characteristics of mother-of-pearl inlay technology, successfully studied relief-shaped shell carving paintings and a variety of practical crafts, thus opening a new page in the history of shell carving crafts. The products are exported in large quantities to earn foreign exchange and are sold well in domestic and foreign markets. Process flow: 1. Collect, wash, and dry; 2. Design the pattern. Design the shell carving pattern on the drawing. 3. Cut and carve. Carve and cut the shell raw materials. This is the basic preparation stage for shell carving crafts. 4. Glue. According to the design and the effect of the previous demonstration, glue it once, usually using universal glue. According to various shapes, select similar items and glue them. 5. Drill. Due to the needs of the shape, the connection between the materials is often not strong enough by gluing alone, and a connector (usually steel wire) is required. Choose a drill with a suitable caliber to drill holes. 6. Before and after gluing, the work needs to be polished and adjusted. At present, Pan Xiuju, a retired teacher from Daishan, has opened a shell carving course in Gaoting Central Primary School to teach this technique to students and develop their imagination. It is deeply loved by students and now has more than 100 students.