Click "Menu" at the top of the itunes interface and select to add Chinese document files to the repository.

Click "Books" and you will see that the added books are in the project.

Connect the device to the computer with a data cable, then click the Book tab to select the synchronized book, and wait for the synchronization to end.

Run the reader "ibooks" and select the Chinese document file. At this time, you can find synchronized e-books in the list, and you can see them when you open them.

How to turn on the vibration mode of Apple mobile phone;

1. Open the settings option of the mobile phone, enter the "Sound" option, and click Enter.

2. Slide the "Silent Mode Vibration" option button in the sound setting interface to the right. Or both vibration modes are turned on.

3. After that, press the home button directly to exit, and the setting will be successful. There will also be a vibration prompt when answering the phone in silent mode.