The violin horn is divided into two parts, divided by the bridge. The upper part of the bridge belongs to the small head part, and the lower part belongs to the large head part. There are a total of four violin horns. Improper production of violin horns can directly affect the overall aesthetics of the violin.

The middle part of the interior is made when assembling the qin. It is made by grinding the corner wood into the shape of the qin corner, and then sticking the upper side panel. The qin corner is composed of the middle waist, small head, and large head side panels that are glued together to form the shape of the qin body.

The external two ends are formed by bonding the panel and back panel corner wood, which has been pre made to match the size of the internal piano corner, and then the bonded corner wood is finely polished to form.