2. The scope of book exchange includes social science, literature, economics and management, philosophy and life books;
3. Books such as magazines and periodicals, professional and technical books, current affairs books, teaching materials, reference books, worn-out books and defaced paintings that are not suitable for exchange are not included in the exchange scope;
4. Readers can participate in book exchange activities free of charge with the "Library City" reader card, and the book exchange adopts the integral system, which is accumulated and decreased according to the card;
5. The converted books are calculated at a 20% discount on the original book price, and every 1 yuan product 1 minute, if it is less than 1 yuan, the maximum product of each book is 100 minute;
6. Redemption of books will be deducted according to the original book price, and every 1 yuan will be deducted 1 minute, and if it is insufficient 1 yuan, it will not be deducted;
7. If the reader has no record of donating books for one year in a row, the points will be cleared automatically.