Lighting is one of the human's most important inventions. Without lighting, our lives and daily activities would be much different. To begin with, lighting brings us a lot of convenience. In the dark, night lights allow us to move around and do things more safely. In places where people need to work after dark, such as factories and offices, we rely on lighting to provide us with necessary illumination. Lighting also has aesthetic value. Not only does it make our homes and workplaces look more beautiful，it also creates an atmosphere of peace and serenity in various environments. Whether it is the soft candlelight in a restaurant, or the sophisticated customized lighting in a museum, lighting can greatly contribute to the decoration effect. Furthermore, lighting also plays an important role in everyday life，such as painting with light, which can show our emotions and feelings. For instance, when we watch beautiful sunset or a romantic movie, light helps to project those emotions to our heart. In conclusion, light is one of the most important inventions of humans, and it has contributed significantly to our quality of life, comfort, safety and enjoyment. It has special meanings for people when we use light to show our feeling.