Detailed portrait of a young man sitting in a classroom, wearing a white t

detailed portrait of a young man sitting in a classroom, wearing a white t-shirt and holding a pen, black short hair, exams and books on the desk, upper body focus, Loepfe artistic style, popular on CGStation, Xinhaicheng H 2160, inspired by Bian Shoumin, Xinhaicheng, Planned, guvitz style, best quality, 4k, 8k, highres, masterpiece:1.2, ultra-detailed, realistic, photorealistic, photo-realistic:1.37, HDR, UHD, studio lighting, ultra-fine painting, sharp focus, physically-based rendering, extreme detail description, professional, vivid colors, bokeh