A 3D model of a harp, featuring polished brown wood, gold accents, and resonant strings, with an ornate, elegant design aesthetic. It has detailed textures and is suitable for music production, educational tools, or 3D visualization.

A 3D model of an audio equipment, featuring a wooden base, brass horn, and decorative metal details, with a vintage aesthetic. It has low polygon count and detailed modeling, suitable for home decor and music equipment display. （注：原类目“Instrument”不准确，留声机为播放音乐的设备，归为“Audio Equipment”更合适，已识别纠正。）

A 3D model of a guzheng, featuring a wooden body, multiple strings, and wooden bridges, with a traditional Chinese classical aesthetic. It has low polygon count, high detail, and is suitable for music production, game scenes, and educational use.

A 3D model of a Liuqin, featuring a dark wooden body with moon-shaped inlays, four strings, and a slender neck with tuning pegs, showcasing traditional Chinese aesthetic. It has low polygon count and high detail, suitable for music production and educational displays.