What is the dance in the boundless sky about?

Dancing in the sky implies the author's love and praise for meeting.

Dance is a performing art, which uses the body to complete various elegant or difficult movements, usually accompanied by music, and rhythmic movements are the main means of expression. It usually uses music and other props. Dance itself has multiple social meanings and functions, including sports, socialization, courtship, sacrifice, etiquette and so on. Before the origin of human civilization, dance was very important in ceremony, etiquette, celebration and entertainment. Dance appeared in China five thousand years ago. It was born in slave society and developed into a certain feature in Qin and Han Dynasties.