This is a creative composite image themed on Green World. The foreground is bright green grass dotted with colorful butterflies in bright yellow and vivid blue. The background is clear blue sky with white clouds, overlaid with semi-transparent world continent outlines. The whole picture is fresh and transparent, conveying the environmental protection concept of protecting global natural ecology and building a green earth. It is full of spring vitality, suitable for environmental promotion materials or eye-friendly desktop wallpapers.