How to tell the authenticity of a book?

1, the so-called truth, that is to say, genuine books rarely have a 30% discount, a 50% discount, or even a 20% discount or a 10% discount. There are indeed a few books in the special price book processing center of regular bookstores that are not complete sets;

2. For genuine books, especially ancient books published earlier, the editor-in-chief has a strict academic research attitude and strict examination and approval, and there are few mistakes and omissions. Fake books (pirated books) are just the opposite. The reason is very simple: one is for learning (true) and the other is for making profits (fake). Different purposes, different abilities and levels will naturally lead to different results;

3, the quality of the paper, whether the cutting is neat; Whether the bones of the book are straight, flat and full; Whether the typesetting is beautiful or not, and whether the words are clear or not, are the criteria for identifying books, especially ancient books.