Aijie (pinyin: jié kè) is also known as Harzak. Originated from Uyghur folk. Popular in Xinjiang, such as Maigaiti, Bachu, Avati, Kashgar, Shache and Kuqa.

Ai Czech, Uyghur, Uzbek bow and stringed musical instruments. It is now a series of stringed instruments with a full range of highs, mids and lows, with a fresh, bright and rich sound. Can be used for solo, instrumental ensemble or to accompany song and dance. It is one of the main musical instruments of Muqam music.

Ai Czech originated in ancient Persia, and later spread to my country through the "Silk Road". It is very similar to the Jichak of Tibetan Genka, Soviet Uzbek, Turkmen, Tajik and other ethnic groups, especially similar to the Gamanzaqin popular in Turkey and Kashmir.

In the Uyghur folk, it is said that Aijie is the sound made when the door is opened, closed or the wheel axle is turned. It was initially popular in the areas of Hotan, Yarkand and Kashgar in southern Xinjiang, and then gradually spread to all parts of northern and eastern Xinjiang.