Dark areas are the "silent partners" of light—they define existence through absence and measure brightness by means of shadows. From optical principles to cultural symbols, the essence of dark areas lies in humanity's deliberate preservation of "visual tension": we design dark areas in architecture to highlight exhibits, uses hadows in films to write metaphors about characters, and even regard dark areas as "emotional buffers" on a psychological level. As Le Corbusier once said, "Architecture is the masterly, correct and magnificent play of masses brought together in light," and dark areas are precisely the most philosophical pieces in this play. They endow the language of light with pauses and accents, ultimately imbuing space with a rhythmic breath through the dialogue between light and dark. When we learn to pause in dark areas, we come to understand that the ultimate art of light is how to reconcile with shadows.