简约现代风儿童教育宣传五个快乐孩子手持彩色纸板人像

minimalist style, main colors white and light gray, color scheme includes yellow, blue, pink, and brown, 4 children, natural smiling expressions, standing and holding books, wearing gray, white, and red school uniforms, close interaction between children, main objects are children and books, books in yellow, blue, pink, and orange, children standing in a row with the middle boy slightly prominent, light and cheerful atmosphere, bright and simple environment, no decorative elements, no text, pure white background, fresh and natural visual effect, conveying a positive and educational theme