In China, at the time of graduation, most students are used to selling their textbooks, test papers and draft papers by weight. It seems to become a 'traditional custom' on the campus during the graduation season. Apart from selling these books, is there any other way to disposing of them? Personally, these books have accompanied my four years of college life and carried many precious memories. Although they are no longer useful, I am not willing to sell them. Through the 'Proper Goodbye' project, I created a new way to say goodbye to my college books, turning them into furniture series so that they can continue to stay with me in a new form.