写实三维产品渲染，中式仿古做旧铜制长方体文房盒，边角圆润倒角，深棕古铜色金属材质，表面带有氧化粗糙肌理与使用痕迹，正面长方形内嵌边框内雕刻三朵相连的中式祥云浮雕，云纹线条卷曲流畅，末端延伸出飘逸云尾，浮雕凸起边缘带有浅金铜色高光，器物放置在深灰色哑光平面上，深灰渐变纯色棚拍背景，左侧侧主光照明，光影柔和自然，突出金属质感与浮雕立体感，浅景深，中近景，略微偏右的斜侧视角，1:1方形画幅。

Realistic 3D product rendering, Chinese antique bronze rectangular stationery box with rounded chamfered edges, dark brown aged bronze metal material, rough oxidized texture and wear marks on surface, three connected Chinese auspicious cloud reliefs carved inside the rectangular embedded frame on the front, cloud patterns with smooth curled lines and flowing cloud tails at the end, raised edges of the reliefs with light golden bronze highlights, the object placed on a dark gray matte surface, dark gray gradient pure color studio background, left side main lighting, soft natural shadows, highlighting metal texture and relief three-dimensional sense, shallow depth of field, medium close-up, slightly right oblique side perspective, 1:1 square aspect ratio.