"Seventh Five-Year Plan" is a category that Confucius used books network to measure the old and new degree of books. The specific provisions are as follows:

Ordinary books:

Seven or five products: it meets the requirements of eight products, but the problem can be a little heavier. 8. Finished product stage: overall intact. Item 1-4 (front cover, back cover, inner page and copyright page) is in good condition, item 5-6 (illustration page and title page) may be missing individually, and item 7- 10 (spine, shape and corner) may be slightly defective, but it does not exceed 5%. 1-6 has no common problems in book appearance (incomplete matching, adhesion, water stain, deformation, moth-eaten and repair), and 7- 10 has some problems (ink marks, stains, signatures and wear), but it does not exceed 5%. There can be no damage to this book except that the front cover and back cover are worn or slightly creased and the corners of the book are slightly wrinkled. Books with certain fluidity.

Thread-bound book:

Seven or five products meet the requirements of eight products, but the problem is slightly heavier. Eight finished products are well preserved. There is no problem with FAQ 1-4 (residual copy 1, missing page 2, adhesion 3, deformation 4). Item 5- 12 (moth-eaten 5, repair and reloading 6, water stain 7, ink stain 8, defacement 9, signature 10, abrasion1,mildew and weathering 12) may exist slightly, but it does not exceed 5 of the total book area.