培训机构插画红领巾男孩伏案书写素材图片

A Chinese boy wearing a red scarf holds a pencil and is looking down at a math problem, with a serious and thoughtful expression. The background is pure white with no decorations. Natural, soft, frontal light. The subject is centered and occupies 55% of the frame, with large areas of white space around it. 16:9 aspect ratio, rounded and flat style, healing/comforting.