Various shapes. The traditional Sai Ding is somewhat similar in appearance to Ruan. It consists of a sound box, a headstock, a piano rod, a peg, a bridge and strings.

sound box
Most of them are flat oval-shaped hollow bodies, but there are also peach-shaped, wax gourd-shaped, round top and bottom, etc. The piano box is 23 cm-32 cm long, 20 cm-26 cm wide, and 5 cm-8 cm thick. Nowadays, the frame board of the piano box is mostly made of red toon wood, toon wood, yellow mulberry wood or nanmu. Several pieces of wood are spliced and glued to form the piano frame. Thin bamboo board.

Headstock and stem
Made of one piece of frame wood, the upper part is the headstock, and the middle and lower part are the stem. The headstock is simple in shape, mostly in the shape of a square column. The upper end is slightly larger and has a flat top. The front is engraved with ethnic-style patterns or ornaments.

peg
Red toon wood or yellow mulberry wood, in the shape of a cone, the surface of the shaft is decorated with straight petal patterns. The piano bar is wide and long, in the shape of a semi-circular cylindrical body, narrow at the top and wide at the bottom, flat at the front and round at the back, with a mountain pass at the upper end, and a fingerboard at the bottom. in the square hole of the piano case. There are several small circular sound holes in the upper middle of the panel.

bridge
Bamboo, wood or iron, placed in the middle and lower part of the panel.

strings
The copper wire stripped from the wire was used at the earliest, and the steel string was used later. Between the string groove and the tail post, there is a silk colored strap.