生成一张真实的大学教室照片，iPhone16质感，XX老师在教XX知识，黑板上有详细而清晰的粉笔介绍，有图形辅助理解，不需要同学
Generate a realistic photo of a university classroom, iPhone 16 texture, Teacher XX is teaching XX knowledge, there is a detailed and clear chalk introduction on the blackboard, with graphics to assist understanding, no students needed
