Ficak is a single-reed air-sounding instrument unique to the Xibe people. The Xibe language is also called Olhuifizak. The Han people call it the reed flute. It is popular in Qabqal Xibo Autonomous County, Yili Kazak Autonomous Prefecture, Xinjiang Uygur Autonomous Region.

The Fizak consists of a double-pipe and two-pipe whistle, with a total length of 25 cm. The tube body reed system is made by cutting two reed tubes of the same length and thickness from a reed.

Generally, the length of the pipe is 21 cm and the inner diameter is 0.8 cm. There are six identical circular sound holes on the two pipes, and the distance between the holes is equal. The two whistles are made of thin reed tubes, the length of the tubes is 5 cm and the outer diameter is 0.8 cm. The upper end can be left open or not, and the lower end is open. At 1 cm from the first end, a rectangular reed is carved with a sharp knife. The reed, the reed base is down, the reed tongue is up, and the reed is 2.5 cm long and 0.4 cm wide. Finally, insert the two pipe whistles into the upper mouths of the two pipes respectively.