A mature national dancer's action on the stage has aesthetic value and artistic charm, because it embodies the high integration of "form, spirit, strength and rhyme" and is an important expression of the body rhyme of China classical dance. "Form, spirit, strength and rhyme", as the basic action elements of body rhyme, highly summarizes all the connotations of body rhyme. Form, that is, external action, includes the movement line connected by posture and its action. God, that is, charm and mind, is the dominant part. Strength is strength, which includes the artistic treatment of the relationship between priority, strength and softness. Law, that is, the movement law of the action itself. The relationship between these four elements of action is to achieve unity of form and spirit through force and law. Its law is "harmony between heart and heart, harmony between heart and qi, harmony between qi and force, harmony between force and form". These are incisive generalizations and refinements. These words and basic movements are highly unified and harmonious, which constitutes a dance aesthetic theory with China characteristics.