A straight line will turn to be an arc under forces, making arc a symbol of power. However，I am attracted by the perfect arc as generated intense insteps and the waist. In reality, the muscle lines in a dancer’s body parts (chest, abdomen, buttock, arms, shanks and even fingers) when completing every action (raising head, stretching, jumping, circle), display the beauty of power, which is similar with dynamic strokes of Chinese calligraphy (e.g. regular script), i.e. Straight forward principles. In addition, the control of power is also reflected in every circuity, pause or stretch. Also, in the English language, I find the same beauty.