With a romantic retro style, this cello music box puzzle is mainly a combination of cello and magic books. The hollow structure of the body shows the internal gear set, a six-petal flower embellished on it, the panel is engraved with a classic European pattern, a very retro aesthetic. The product is also interspersed with a large number of magic elements, such as magic books, little witches, and cats, giving people a retro and mysterious visual experience. In addition, the base of the magic book shape, uses the story of the "father of the cello" Pablo Casals, and the main self-playing cello echoes. Self-playing Mechanism: The winding mechanism moves the bow in a straight line from left to right and back again. Six-petal Flower Gear Body: Creative body design, engraved with a large number of openwork pattern, elegant and romantic. The hollowed out body visually shows the internal multi-stage gear transmission, which makes you feel the wonderful collision of rigorous machinery and romantic shape. Mysterious Magic Ancient Book: The base of the book is a mix of original wood and vintage brown, with a short story about the "father of the cello", Casals. The three magic books are stacked in sequence, and the cover is carved with an openwork European pattern, mysterious and retro.