Cells are the basic unit of the structure and function of organisms. Since it does not easily visible to the naked eye, people usually ignore its importance. The cells grow in small micro-world. Through a microscope, you can find that cells' shape and color changes constantly. Although they seems like just gather together, they coordinate with each other, share the work and have good relationship with each other. And I use the principle of magnetic attraction as the main way to wear, let brooch add interactive and fun. The closely connected component and the use of lines in my project interpret the thought of cells that they want to have a sense of energetic movement.