四合院自然通风分析图

Create one standalone 3:2 landscape image: an elegant architectural analysis sheet showing courtyard airflow, shade and seasonal sun paths around one axonometric model, no words. Visual approach: Cloudy diffuse light. Keep a single coherent scene with crisp material edges and believable spatial relationships. No collage, no grid, no logo, no watermark, and no readable text.

生成一张独立的 3:2 横幅图像：围绕一个轴测院落模型展示气流、遮阴与季节日照的建筑分析图，无文字。视觉方法采用阴天漫射光。保持单一连贯场景，材质边缘清晰，空间关系可信；不要拼贴、网格、标志、水印或可读文字。