This preachy story has little to recommend it: characters are flat, either all-wise and good like Yu-ning and her teachers, weak and easily converted by Yu-ning's superior wisdom, or entirely evil. The contrived plot moves from one episode to the next in a predictable fashion, though contrary to the title, Yu-ning spends most of the book journeying away from Rainbow Island, and the final conflict takes place in the Imperial City. Stilted dialogue makes the story even less engaging, and the computer-generated illustrations add little to the book.