This is also a Hani reed instrument, available in single and double-barrel versions, and is used for solo performance or as an accompaniment to raps and dances. The Bawu is 40 centimeters long and 3 centimeters wide in size, and has eight finger holes, seven in the front and one in the back [1]. However, because the original baowu only had eight holes, it could not play a complete seven-tone scale. After the founding of the PRC, a research group modified the original Bawu, changing the reed material from bamboo to copper, and changing the eighth finger hole to the lower right of the finger hole column, but basically retaining the original playing technique and the bamboo body [3]. This effectively optimizes the playing of the baow and expands its range.

There is also an interesting legend about the Bawu in the Hani Ailao Mountains: a Hani girl named Meiwu once fell in love with a young man named Bachong, but was taken captive due to the devil's jealousy. The devil forced Mei Wu and his own marriage, but she did not say a word, never give in, so the devil cut off her tongue, threw her into the deep forest. One day, a fairy bird came to the forest and brought Mew her tongue as well as a piece of bamboo. After putting her tongue into the bamboo, the girl blew the bamboo to express her longing to her distant lover. After hearing the sound of the bamboo, Bachong wades into the forest and rescues Meiu. In the end, the two of them took out the “Ba” and “Wu” in their names and named the bamboo instrument “Ba Wu”.

Bamboo tubes originated from the Hani people's former cooking utilities, which were used to cook food by “roasting”, “broiling”, “steaming”, “stewing”, and other cooking techniques [5]. Later, the Hani people transformed the bamboo pipe from a cooking utensil into a musical instrument with no fixed pitch but a loud sound by trimming the bamboo pipe into a 45-degree beveled surface. Bamboo pipes are often used to accompany various ceremonies and festivals, the most famous of which is the Bamboo Pipe Dance [1]. The most famous of these is the Bamboo Dance [1], in which the Hani people will come out to dance with the sound of the bamboo pipes, and even celebrate the New Year's Eve with the sound of the bamboo pipes all night long. The old people will also sit around the bamboo tube to chat and drink. It can be said that the sound of the bamboo tube is the atmosphere of all kinds of Hani festivals.