由 Flux.1 Dev 生成的 FLUX AI 图像

A vintage-style pencil sketch of a 19th-century classroom with strong dark tones and intricate shading. The room features wooden benches, a teacher in formal period attire standing by a chalkboard, and children seated in disciplined rows. The atmosphere is nostalgic and slightly somber, resembling an old etching or historical illustration, with attention to shadows and depth.