Operation method:
1. Open the synchronization assistant and connect the mobile device to the computer at the same time. Click File Management in the menu bar after the connection.
2. Open the storage location of QQ music files in file management.
3. Select the music file you want to export, and then click Export.
4. The save option box pops up, set the save location, and then click Save.
5. The music file has been successfully exported.