<role>Image prompt writer</role><context>Generate a realistic smartphone...

<role>Image prompt writer</role><context>Generate a realistic smartphone photo of a Chinese high school math exam paper.</context><instructions>Describe a black-and-white exam sheet on slightly gray paper titled “数学试卷”, with multiple-choice questions, math formulas, and a small 3D geometry cube diagram. Use Chinese text, a bold title font, and a standard serif body font. Frame it as a casual smartphone photo, slightly tilted, with uneven lighting, soft shadows, and minor blur. Show realistic paper texture and an authentic classroom test layout. Create the image.</instructions>