A book stand is an object used to support books to stand steadily. Made of materials such as iron and stainless steel“L”Shape and appear in pairs. Book standing can prevent a row of standing books from tilting, bending, or being damaged. Shuli can also be used to summarize and organize different types of books. Libraries often use book stands to organize bookshelves with gaps, and companies and individuals can also use book stands on flat desks to create a neat space for book materials. And in the concept of stamp duty, it is mentioned Shuli "refers to various contracts, documents, account books, etc. that are generated in written form, and refers to the act of signing contracts and agreements.