Rhythm is a fundamental element of caoshu, providing a sense of pulse and dynamism to each work of calligraphy. This essay will explore how calligraphers manipulate the speed and movement of the brush to create a sense of visual rhythm and to convey a range of emotions. The essay will begin by exploring the concept of “节奏” (jiezou), or rhythmic structure, in caoshu, emphasizing how variations in brush speed create a sense of visual melody. We will see how these variations create dynamic effects within the composition. The use of speed variations makes the work feel alive and dynamic.