This is a minimalist interior photography work that captures the abstract geometric space formed by the interweaving of arched curved walls and light and shadow in the National Taichung Theater, presenting a unique cave beauty. The figures of pedestrians walking towards the light source form an intriguing echo with the simple male and female symbols on the wall, as if the human-shaped symbols on the wall are also moving forward with their steps. At this moment,people and the geometry of the building's interior blend together,light and shadow wander between them, resonating a moment of reverie.