Group worship festival is also called ugly boys' day. At first, the main characters in the dance were two ugly men. Great changes have taken place since then, and it contains other dance elements. At present, the so-called group dance is usually performed by a man and a woman or two people. This dance was put in the last performance of Crown Boat and became the finale. So it is also called "back dance". Now, in the dance performance, two female dancers first came out of the stage. They danced quietly, wearing Wang Fu-era Turkish class women's dresses, red tops and white culottes. After they finished dancing, there appeared two ugly girls in masks, dressed in human clothes, with turtle bones on their heads and black tops. On the stage, ugly women and beautiful women dance with each other. Beautiful women are dignified and elegant, and ugly women are exaggerated and funny. Then, the beautiful women got off the stage, leaving the ugly women on the stage. They made more exaggerated gestures, twisted their waist and swung their arms, and then walked off the stage.

Dance has a small plot, showing two different characters: a cold and aloof beauty and an open and honest ugly woman. It is a humorous dance, and it is also a dramatic art that transforms into traditional Chinese opera. Today, people still regard it as a genre of royal boat dance.