## Five Eight The connecting part of these two curves is called rhythm. The "bamboo joint cap cylinder" lacks a sense of rhythm. Both of the above diagrams use double curves for the body cylinder and arc lines for the neck, but they give people different impressions. The former diagram gives the image of a vase, while the latter gives the image of a jar. In the former diagram, the ratio of neck to body is 1:1, while in the latter diagram the ratio of neck to body is 1:3. In both diagrams above, because the connecting part between neck and body—that is, the connecting part of the arc lines with the double curves—creates linear decoration, the sense of rhythm is relatively strong. Conversely, if the false base in the diagram is not handled well, it will be greatly weakened. The latter diagram is a jar; if a small knob is added to the shoulder, it becomes even more enriched. The former should be treated as a single line at the appropriate place, which makes it more harmonious. If in the above two diagrams the appropriate place is treated as a straight cylinder form, it won't look good, but if the double curve is widened and a straight neck is added, it's not necessarily unworkable. In short, the contrast should be strong and intense, but must be just right.