Mikimoyo is a Japanese term that literally means trunk patterns. It refers to the curve line of a trunk that forms the basis of a tree form. There are two types of Mikimoyo: the natural curve and the artificial one. The natural curve is the result of the tree's growth in response to environmental factors, such as wind, sunlight, gravity, etc. The artificial curve is the result of the bonsai artist's manipulation of the trunk, such as wiring, bending, pruning, etc. The Mikimoyo is an important element in creating a harmonious and aesthetic bonsai design.