A realistic photo of a Chinese high school math exam paper, printed inblack and white on slightly gray paper, titled “数学试卷”, with multiplechoice questions and math formulas, including a small 3D geometrycube diagram. The paper is photographed casually with asmartphone, slightly tilted, with uneven lighting, soft shadows, andminor blur. The text is in Chinese with a mix of bold title font andstandard serif body font. Realistic paper texture, exam layout,authentic classroom test sheet style.