People spend most of their lives in buildings, such as homes, offices, or other indoor public spaces. I think the building should give people a comfortable feeling. The structure and shape of the building must also meet the needs of people's lives. For example, ventilation and nice light, and space are the elements to be considered in living. I think the building must be ventilated, the outdoor air enters the room at its original temperature and mixes with the indoor air during the flow, and exchanges heat with the indoor surfaces according to the temperature difference between the indoor and outdoor. It can also prevent discomfort due to warmth and damp skin. I think buildings must have good light because sufficient indoor light brings comfort to people’s lives. For example, the floor-to-ceiling windows can allow more natural light to enter the building space, save energy, reduce environmental pollution, or enjoy the outdoor great views. Because people can know the outdoor weather and the visual enjoyment of the surrounding environment through the window and can relieve their emotions during intense work. I think the space of a building has different needs for everyone.  The space may be large, or space must have some visual impact, such as color. Buildings are important places for people to live. The living environment must have good light and space must meet people's needs. Like that the building can give people a feeling of comfort and security.