The special chime is an important musical instrument in the ancient court music - Zhonghe Shao music. The texture is mostly jasper, and there are also Lingbi stones. A whole set of twelve, in order to respond to the twelve laws. The chime body is a rectangle with obtuse angles, the long side is called the drum, and the short side is called the strand.

The whole set of special chimes have the same size, and the pitch is fixed according to thickness. The two sides of the chime are decorated with golden clouds and dragon patterns, one side is the inscription made by Emperor Qianlong in seal script, and the other side is the name of the law chime. The chime hole is hung with a silk rope. Each of the twelve chimes is hung with a bi, which is roughly the same as that of the bell, except that the upper chime is carved with a phoenix head on the left and right, and the left and right two bear the lying mallard with white feathers and red beaks.
The use of the twelve chimes is the same as that of the bells, and they are displayed according to the monthly laws. They are located in the west of the chimes. When making music, it is advisable to first strike the bell to announce its sound, the music will stop, and then strike the special chime to close its rhythm, which is the so-called "golden sound and jade vibration".