Minimal White-Shirt Portrait

Create a 4:5 vertical minimalist white-shirt portrait. A Chinese male model sits on a simple wooden chair in front of a blank light-gray wall, wearing a clean white shirt and black trousers, sleeves slightly rolled up, hands naturally folded on his knees, body angled slightly toward the camera, calm expression. Composition from half-body to thighs, not full-body and not a dramatic fashion pose. Soft window light from the left, slight shadow on the right, completely blank texture-free background. Palette: white, light gray, black, and natural skin tones; minimal, quiet, and realistic. 85mm lens, natural face and hands, realistic proportions. No readable text, logo, watermark, brand, poster, or decorative symbol anywhere.

生成一张 4:5 竖版白衬衫极简肖像。中国男性模特坐在浅灰色空白墙前的一把简单木椅上，穿干净白色衬衫和黑色长裤，袖口微微卷起，双手自然交叠放在膝上，身体略微侧向镜头，表情平静。构图为半身到大腿，不是全身，不是时装大片姿态。光线为左侧大窗柔光，右侧轻微阴影，背景完全空白无纹理。色调为白、浅灰、黑和自然肤色，极简、安静、真实。85mm 镜头，面部和手部自然，人物比例真实。画面内不要出现任何可读文字、logo、水印、品牌、海报或装饰符号。