Thư viện prompt AI miễn phí cho người Việt

Vertical printed poster format, bright flat 2D vector illustration style. A decorative school wall newspaper border frame for Vietnamese Teachers' Day. The outer perimeter is adorned with neatly arranged open notebooks, fountain pens, wooden rulers, and vibrant red hibiscus and yellow chrysanthemums alongside small green leaves, framing the entire canvas. Centered at the top border, the exact Vietnamese headline appears: "Tri ân thầy cô 20/11" in neat, elegant typography; the quotation marks themselves are not drawn. The entire central area is a large, completely clean and empty solid cream paper texture background, leaving generous blank space for pasting articles. Even, bright daylight illumination, warm cheerful school palette with cream, pastel cyan, soft yellow, and coral red accents. No people, no other letters, words, or numbers anywhere.