Subject: High-altitude bird's-eye panoramic night view of a city, crisscrossing highway overpasses, long-exposure orange and white light trails from traffic, continuous residential and commercial buildings, warm lit windows in buildings, distant mountain silhouettes, blue-purple gradient dusk night sky. Scene: Modern city high-altitude perspective scene during the transition between dawn and dusk, three-dimensional transportation network crisscrossing, traffic turning into a flowing light river, city center buildings with scattered lights, distant mountains contrasting with the gradient night sky, fully showcasing the bustling rhythm of the city. Style: Long-exposure photography art, aerial panoramic perspective, atmospheric cityscape, cool-warm contrasting colors with cinematic texture. Tone: Dominated by cool blue-purple gradient tones of the night sky, paired with orange traffic lights and warm yellow building lights, interwoven cool and warm tones with full layers and strong visual tension. Lighting: Smooth light trail streaks formed by long exposure, warm and diffused building lights, soft gradient dusk in the night sky, natural overall light and shadow transition, rich atmosphere. Composition: High-altitude bird's-eye panoramic composition, transportation network extending outward in a grid, scattered building clusters, distant mountains and night sky forming foreground and background layers, grand and open spatial depth. Purpose: Suitable for city promotion posters, cultural tourism landscape covers, high-end real estate backgrounds, urban night scene wallpapers, visual materials for urban construction themes.