1 Look at the appearance. The overall feeling of genuine books is neat, straight and generous, while pirated books are not neat from the outside, like crumpled and soft, which can be seen from the outside.

2 paper. Paper is also divided into good and bad. Genuine books are good paper, which is slightly heavy, while the paper used for stealing books is particularly thin and light. You can feel two books in your hand at the same time.

3 Look at the clarity. After the original book is opened, the handwriting is particularly clear and the ink is sprayed evenly, while the pirated book is illegible and the ink is deep and shallow, and the overall feeling is rough printing.

4 the source of reading. Sometimes if you are really not sure, you can check the inventory of the computer to see where the goods were imported and what version of the book it is.

5 Look at the marks, most genuine books have anti-counterfeiting marks, and different books have different anti-counterfeiting marks. Therefore, this is very important. Some pirated books also have anti-counterfeiting, but they can't enjoy online value-added services, while genuine books can enjoy services.

6 Look at the error rate. There are too many typos in pirated books, and the error rate is very high, for example; There are blank pages, few pages, and some pages are bound backwards. In short, books with high error rate are pirated books.