1. Open the friends QQ chat dialog box.

2. Click the "+"icon at the bottom to open various tools, and click "Video Chat".

3. Wait for the dialogue to be answered. Video chat can be used for mobile phones or computers with cameras.

4. After the other party answers, you can click "Hands-free" to make a voice call, and click the "Camera" icon to turn off or turn on your own camera.

5. Enter the video chat, and two windows will be displayed on the interface at the same time, the large window for the other party and the small window for yourself (long press and drag to any position).

6. Clicking anywhere on the screen will pop up a menu. Click "Switch Camera" in the lower right corner to change the selfie to the rear camera, which will be very convenient if you need to show anything.