If we consider that a large part of beauty, that is, what we appreciate in animals or other objects, comes from the concept of convenience and efficiency, we will not hesitate to agree with this view. In one kind of animal, it is a beautiful appearance that can produce strength, and in another kind of animal, it becomes a symbol of agility and agility. In the palace construction, the key of order and convenience is no less than the beautiful appearance. Similarly, in buildings, it is required that the top of the beam column is longer than the bottom column base, because this shape conveys a sense of safety and makes us feel happy. The opposite shape will give us a feeling of danger and make us feel uneasy.If we consider that a large part of beauty, that is, what we appreciate in animals or other objects, comes from the concept of convenience and efficiency, we will not hesitate to agree with this view. In one kind of animal, it is a beautiful appearance that can produce strength, and in another kind of animal, it becomes a symbol of agility and agility. In the palace construction, the key of order and convenience is no less than the beautiful appearance. Similarly, in buildings, it is required that the top of the beam column is longer than the bottom column base, because this shape conveys a sense of safety and makes us feel happy. The opposite shape will give us a feeling of danger and make us feel uneasy.