Nanxi Hahao is an ancient folk wind instrument in Nanxi. It is one of the props for the local people to entertain themselves during the 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 the harvest in their spare time. They used bamboo as their horn and played it for music, and they played it on 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.