The sea will never be wasted - Please edit, please sit down, and please drink tea. This course extends the "Island Plastic Chair" work exhibited at Matsu International Art Island. Through "Please edit", "Please sit down" and "Please drink tea", a total of Integrate the creative concept into the campus, invite local teachers and students, transform drifting waste, and continue to practice sustainable co-creation of the future through the application of various weaving techniques. The course redefines the issue of waste, using recycled CDs, fishing lines collected from beach cleanups and floating balls, and through the connections between "mathematics", "art", "ocean issues" and "comprehensive" fields to guide students on how to use recycling CDs and cardboard, use the concept of finding patterns in circles to think about how to solve problems, design knitting templates, learn simple techniques for weaving and wrapping, and complete hand knitting exercises. The course gives people a gentle touch, integrates aesthetic experience, and cultivates patience and concentration. The floating balls collected from sea waste are painted with four-season plants and designed into lamps. These recycled items are also transformed into works of art through creation, stimulating and cultivating the literacy and application abilities needed for future life, making life artistic and art life-oriented. .