Chu Shi Biao Chalk Handwriting On Classroom Blackboard Smartphone Photo

Photorealistic real-life candid shot, taken with a modern smartphone on a bright sunny daytime, first-person slightly tilted handheld shooting angle, soft natural daylight pouring into a standard middle school classroom from side floor-to-ceiling windows, dark green standard classroom blackboard in the center of the frame, full text of Chu Shi Biao (the famous ancient Chinese memorial text) neatly handwritten on the blackboard with realistic white chalk, the chalk handwriting has subtle chalk dust texture, slightly rough edges and natural writing traces with no typos, a small corner of a wooden front-row classroom desk and sheer white curtain edge are visible at the frame edge, no harsh shadows, true-to-life color grading, no heavy filters, high resolution, 4K, authentic daily photography style