How to set up trial reading content?

1. If the product is set to be free, users can directly view the complete e-book content.
2. If the product is set to be paid and trial reading is supported, users can only view the trial content and can access the complete e-book after purchase. (The chapter list shows in black and grey. The trial part is in black, and the grey part requires payment to view.)
3. If the product is set to be paid and trial reading is not supported, users cannot view the e-book content or the trial content.

Free e-books do not have the concept of trial reading. Therefore, it doesn't matter whether trial reading is set or not supported for free e-books, and the trial reading setting will not take effect.

Trial reading supported: Set the trial reading to which chapter. Here, the number of chapters refers to the chapters of the e-book, starting from the first page of the e-book, not the first chapter of the main text. If there is content such as preface and copyright information, it is also counted as a separate chapter. (Note: For e-books in PDF format, set the trial content by page number.)

Trial reading not supported: If you choose not to support trial reading, the trial reading button will not be displayed on the user side.