Subject: Foreground is a white new energy electric vehicle parked next to a charging pile, midground features two cyclists wearing safety helmets riding bicycles on a greenway, mid-background is a city rail transit train exiting a mountain tunnel, background includes modern urban buildings, wind turbines on hills, paired with abundant green vegetation. Scene: Suburban low-carbon travel outdoor scene, including rural cycling greenway, new energy vehicle charging points, rail transit tunnel, remote clean energy power generation mountains, urban built-up area skyline, open and comfortable environment. Style: Modern flat vector illustration style, simple and concise shapes, smooth and rounded lines, fresh cartoon-style operational illustration, no excessive complex texture rendering. Color tone: Overall low-saturation macaron color system, with light sky blue, tender grass green, light beige as main colors, paired with pale blue and light yellow as accent colors, soft and fresh colors. Lighting: Flat-painted soft diffused light effect, no strong light-dark contrast or hard shadows, overall uniform and bright light, transparent and refreshing picture. Composition: Vertical layered progressive composition, elements arranged sequentially from near to far, clear picture hierarchy, proper spacing, visual focus on the lower-middle part of the picture, open and expansive field of view. Purpose: Suitable for low-carbon green travel theme promotion, environmental protection public welfare science popularization, urban ecological construction promotion, and visual illustrations for related operational activities.