Flower arrangement should know some common sense of flower collocation, such as: in color, light flowers are inserted low and dark flowers are inserted high; At the level, flowers should not be inserted in the same horizontal line or straight line, and flowers and leaves should not be arranged at equal distances, but should be sparse and dense. In short, flowers are real, leaves are empty, there are flowers without leaves, and there are leaves without flowers without entities; Both motion and static are suitable, and the motion and static are symmetrical and scattered.