The three-string Duolang Aijie was remade in the 1920s by adding strings on the basis of the two-string Aijie by an artist of the Uyghur folk musical instrument in southern Xinjiang. Zhang has three main strings, using horsetail strings, casing strings or steel strings, and also has 10 steel wire resonance strings, which are now widely popular in Xinjiang.

The Doran Aijk consists of a sound box, a headstock, a stem, a peg, a bridge, strings and a bow.

sound box
It is hemispherical and mostly made of hard wood such as sand jujube wood and walnut wood. The front is covered with sheepskin or donkey skin.

Headstock, stem, peg
It is made of one piece of wood, mostly walnut, apricot, coconut or mulberry, with a total length of 80 cm. The headstock is in the shape of a circular pagoda, the string groove is opened at the back, and wooden pegs are placed on both sides for the main strings.

strings
The rod is in the form of a circular cylinder, with T-shaped chord buttons on both sides of the middle and upper parts, and the strings are resonated with steel wires.

bridge
There is a wooden bridge bridge in the center of the leather surface, and a metal tail post under the guitar case.

bow
The bow rod is made of thin bamboo or wood, and the two ends are tied with horsetails as bow hairs.