Thư viện prompt AI miễn phí cho người Việt

Soft watercolor greeting card for Vietnamese Teachers' Day in vertical format. A wooden teacher's desk stands in a bright classroom beside a classic dark chalkboard. On the desk sits a ceramic vase with fresh pink lotus and red roses, several textbooks, a wooden pen box, and neat white chalk sticks. Soft golden sunlight streams through a side window, casting warm shadows. In the upper center, rendered neatly on the clean chalkboard background, is the exact text "Chúc mừng ngày Nhà giáo 20/11" in elegant hand-lettered calligraphy; the quotation marks themselves are not drawn. An ample clean empty area with light watercolor wash is left open below for adding personal messages. Delicate textures, pastel tones, no other letters, words, or numbers anywhere.