1. Open the music box, turn the rocker, and let the spring spring exert force.

2. Rotate the small handle to the appropriate position to select the music you want to play.

3. Turn the crank to make the spring tighten on the internal load-bearing spring, and at the same time, let the gears inside the music box start to rotate.

4. When the gear rotates, the small steel balls slide with the gear and hit the string pieces on the comb, causing the comb to start vibrating.

5. The vibrating comb produces sound, and as the gears rotate, the music box plays a melodious melody.