Kaew the Playful (Thai: แก้วจอมแก่น) is a children's literature by Waen Kaew (Thai: แว่นแก้ว, Princess Maha Chakri Sirindhorn's pen name), the first published in 1978. The novel is adapted from the author's own experience, it's the story of primary school girl Kaew and her friends. Source: Wikipedia (en)