There is a radio exercise, why is it called "Dancing Youth", what is the meaning of "Dancing"?

Can you imagine a picture: in a square, there are a group of energetic children, holding a balloon in their hands, raised above their heads, while jumping and running towards you, the look of excitement, that is called dancing. It contains the meaning of positive upward, with this age group of children should have the vigor. Dance youth, is to youth outlook to youth salute!