"Green Waist" is a big name in music and dance in Tang and Song Dynasties, belonging to the category of "soft dance" in Tang Dynasty. Also known as Liu Yao, Lu Yao and Xerox. The dancers are dressed in long sleeves and narrow skirts, and their movements are light and feminine. The movements are mainly dance sleeves. The rhythm changed from slow to fast, and the dance was elegant and smart, like a bird that was surprised to fly. Liu Yao's music is very popular, so there is a poem "Liu Yao mink sings by everyone", which is often used as a pipa solo.

Gu, a painter of the Five Dynasties, painted a sketch of the real-life scene "Han Xizai's Night Banquet", including a scene painting of Wu Wang performing a dance. In the painting, the dancer's back is turned to the audience, and half of her face comes from the upper side of her right shoulder, wearing a sky-blue long-sleeved dance skirt, slightly tilting her head and slightly lowering her eyebrows. After the double-sleeve dance, she put her back behind her, and her slightly raised right foot was about to step down. The hands behind her seem to be separated from the bottom to the sides, waving their long sleeves, and their expressions are subtle and charming.

Han Xizai's Night Banquet is the only dance relic with clear time, specific occasion, dance name and dancer's name.

Liu Yao dance was still popular in the Song Dynasty. There are various names of "six hexagrams" in the number of official dramas in the Southern Song Dynasty, such as: six hexagrams of Cuihu, six hexagrams of Yingying and six hexagrams of Cook. From this, it can be proved that in the Song Dynasty, Liu Yao had been absorbed by the art of traditional Chinese opera. China's traditional operas absorbed the historical facts of ancient traditional dances and showed them clearly.