The dragon head sanxian is a plucked stringed musical instrument of the Bai people. Because the qin jewelry is named after the dragon head, it is called Xiongzijia in Bai language. There is such a legend in the Bai people.

Legend has it that a long time ago, there lived an old man on the Erhai Sea. He had three sons, Dalang was greedy for money, Erlang was lazy, and Saburo loved to play the ancestral dragon head sanxian since he was a child.

Saburo grew up to be a handsome young man, and he also played a wonderful piano. The melodious sound of the qin can make the buds bloom during the day and the stars at night without blinking.

One year after the old man died, the two older brothers drove Saburo out of the house to divide the property. Saburo wandered everywhere, comforting all the unfortunate people with the sound of the piano, wherever he played the three strings, there would be singing and laughter.

One day, Saburo walked into a village, and saw an old couple crying with their daughter in their arms. It turned out that a demon came to the main temple of the village, and later turned into a thick python. It eats a pair of boys and girls every day. Tomorrow is just right. It was the old couple's turn to give up their daughter.

Saburo was determined to eradicate the evil for the people. The next night, he lit a fire in the temple, and sat by the fire and played the three strings of the dragon head.

By the firelight, he saw a stunning beauty painted on the wall, smiling at him and winking with big charming eyes, Saburo couldn't help but sing: "Girl, you are a fairy in the sky, or a flower god in the world, if you have love, I would like to express my wishes." Before the singing was over, the beautiful woman in the painting fell to the ground and danced gracefully around the fire.

Suddenly, the man-eating monster came in, and it saw the girl and the boy and wanted to have a delicious meal. Who knows, the wonderful sound of the piano makes it limp and fall asleep. The girl hurriedly unfastened the strap of the dragon head sanxian, and it turned into an iron chain that wrapped around the neck of the demon. Saburo then pulled out his waist knife, cut off its head, and turned into a severed boa constrictor. It turned out that the girl was the princess of the Dragon King of Erhai Lake. She envied the flowers in the world and came out to play. She was immobilized on the wall by a demon and turned into a painting.

Saburo and Dragon Girl become husband and wife and live a happy life.

Since then, the dragon head sanxian has spread among the Bai people and has become an inseparable musical instrument for young men and women when they are in love.