Nanxi Hahao is an ancient folk wind instrument in Nanxi. It is one of the props for the local people to entertain themselves during festivals. It has unique local characteristics and has a history of more than 2,000 years. According to legend, in ancient times, the Bo people celebrated good harvests in their spare time, took bamboo as their horns, and played bamboo for music, which was mostly played in representative festivals such as the twelfth lunar month and the fifteenth day of the first lunar month. And because the Bo people's surname is "Ha", later generations call the local musical instrument invented by the Bo people "Ha Hao", which has been handed down to this day.

Nanxi Ha Hao belongs to the main category of historical relics, the sub-category of intangible cultural relics, and the basic type of traditional music. In June 2011, "Nanxiha" was listed as the third batch of intangible cultural heritage list of Sichuan Province.

Nanxi Hahao uses the natural bamboo joints of bamboo, thins one end of each section, and then inserts each section into molding. The longest horn can reach more than 4 meters, with about 20 bamboo knots, and the shortest horn is only 33 centimeters like an unearthed bamboo shoot.

The prepared horns will be soaked in water one day before playing, that is, by swelling, the connection between each bamboo section will be more dense. This kind of original ecological folk bamboo number is popular among people because of its pure and simple sound, fresh and lively.

Hahao is a testimony to the leisure and entertainment life of the ancient Luolong people. Since January 2011, CCTV Channel 3 "Happy China Tour - Charming Yibin", Channel 4 "Distant Home - Come to Yibin to See the Sea in Summer", Channel 7 "Many Earth - People Living in Caves" ", "Traveling in China at 30° North Latitude - Following the Footsteps of the Bo People", as well as "West China Metropolis Daily", "Sichuan Rural Daily" and other media and columns, successively interviewed and reported the provincial intangible cultural heritage "Nanxi Ha" "Representative inheritor Guo Daoming.