1. First open Kuaishou and click the button in the upper right corner.

2. Go to the video recording page and click the music button in the lower right corner.

3. Select the multiplier music for the video and click Local.

4. As shown in the picture, you can choose any music currently stored in the phone.

5. The selected music can be used directly to start shooting or to edit the required parts.

6. Drag the slider below to adjust the starting position of the music, and then start recording the video.