Реалистичный бланк китайского экзамена по математике

A realistic photo of a Chinese high school [math] exam paper, printed in black and white on slightly grayish paper, titled "[数学试卷]". The paper features multiple-choice questions, mathematical formulas, and a small [3D geometry cube diagram]. Casually photographed with a smartphone from a slightly tilted angle, with uneven room lighting, soft cast shadows, and subtle natural blur. The text is in Chinese, using a bold title typeface and standard Songti or Mingti serif body font, with realistic paper grain and authentic test paper layout.