Main subject: Overhead view of city night scene, an arc-shaped light strip extends from the left to the right of the frame, sweeping over urban buildings, presenting a tech-savvy flowing trajectory effect. Scene: Dark blue gradient night sky background, paired with twinkling city buildings, creating a futuristic urban tech-business atmosphere. Style: Modern tech-style city night scene design, with flowing light effects and particle texture, a visual style commonly used in internet, finance, and urban development scenarios. Color palette: Based on light and dark blues, paired with the bright white highlight of the light strip, the overall tone is calm and high-end, highlighting a sense of technology and future. Lighting: The lights of urban buildings form a contrast with the arc-shaped light strip, the light strip has a glow effect, the background light transitions from bright to dark, highlighting the picture's sense of depth and fluidity. Composition: Asymmetrical horizontal composition, city night scene is located on the right side of the frame, large blank space on the left, the arc-shaped light strip forms a strong visual guide, the picture is balanced and full of tension. Usage: Suitable for tech/finance-themed PPT backgrounds, corporate website banners, urban development promotional materials, internet industry illustrations, and business conference backdrop boards.