Create a new folder, put the music you cut in, and then make a copy. Then use QQ video to open the music clip you cut, and click on the video toolbox at the lower right (like a small wrench icon).

② Next, click Merge.

(3) As shown in the figure below, first add music and music copies in the upper left corner, then set the saving path in the lower right corner, and finally click Start, and you're done. Pure manual operation. You can ask questions if you don't understand ~