Awu is also known as Brila because of the sound of "Awu, Awu", which is named after the first line of the ancient "Awu Song". It has a long history, and there is such a legend circulating among the people.

A long time ago, the people of Zijun lived on Longbao Mountain, and there was a dragon pool at the foot of the mountain, where two dragons lived. Here the water is clear and the grass is tender, people graze their cattle and live a happy life. Later, the dragon pool dried up, the grass was withered and yellow, and it was extremely difficult for people to drink water. It turned out that two dragons fought each other. A cow-herding baby grabbed the pond mud and squeezed a hollow dumpling-shaped toy, and played it against the sky, making a sound of "Awu, Awu", blowing every day, blowing every day, suddenly, the Longtan water was full, and again The drainage river of Dianchi Lake was dredged, and the water level of Dianchi Lake dropped, exposing a large area of land. Since then, Zijun people have moved to Pingba to live, and every year when the seedlings are planted, they will play Awu to pray for rain and a bumper harvest.