The bass is humming, and the Li people sing their musical instruments. Li language is also called cluster. It is called Dadongxiao in Chinese. Popular in Hainan Province.
The bass dulu has a shape that resembles a western musical instrument bass oboe. It is made of bamboo. The length of the tube is 100 cm to 130 cm and the diameter of the tube is 3 cm. There is a bamboo hat, and a small bamboo pipe 20 cm long is attached to the hat as a blowpipe.