Length 76 cm, width 36.5 cm, thickness 3.5 cm

　　Made of serpentine, the artifact is gray and trapezoidal, with a small hole near the top. The hole's wall bears traces of singlesided tubedrilling, and the edge is somewhat irregular. Two parallel stringlike patterns adorn the surface, and when struck, the chime produces clear, melodious tones with a pure and pleasing sound quality.