The horn is a lip-vibrating air-sounding instrument of the Yi, Dai, Man, and Han nationalities. In the Dai language, it is called 筚phase short, Haya. In Chinese, it is called bucket, big copper horn. Popular in Yunnan Province Chuxiong Yi Autonomous Prefecture, Xishuangbanna Dai Autonomous Prefecture, Liaoning, Jilin and other places.

The tube body is made of copper, the upper part is small, the lower part is large, and the bottom is empty. It consists of upper and lower sections. The upper section is a blowpipe, the body is thin and long, and the top is fixed with a mouthpiece. The lower section is a resonator, which is bell-shaped or trumpet-shaped. When not in use, the upper section of the tube body can be retracted into the lower section, and then pulled out when in use.

The cymbals of the Yi and Dai nationalities are small in size, with a total length of 89 cm, of which the upper blowpipe is 56 cm long, the mouth diameter is 4 cm, the lower resonator tube is 33 cm long, and the lower bell mouth diameter is 19.5 cm. The Manchu cymbals are larger in size, with a total length of 178 cm.