1, generally speaking, you should look at the comments of people who have bought this book, especially the bad reviews, not just the good reviews. . Many praises are deceptive;

2. Generally, the price of genuine books is not too low, but it is not too high. For example, a book sells for 300 yuan to 400 yuan (there are some, but few, so it is rarely a classic book). .

3. When you buy a book, talk to the customer service, ask if it is genuine, and what can be proved, and then compare the genuine book online to know whether it is true or not.