"The Rainbow Dragon" Graded Chinese readers are specially compiled for the 3-to-11-year-old Chinese learners at home and abroad. The books are created by seasoned Chinese teachers in international schools, which have proven effective to stimulate the learning interest of teen learners in teaching practice and to enhance their reading motivation. The series encompasses 15 topics from family, food to Chinese culture and includes 225 readers classified into 3 levels of difficulty, thus forming 45 resource packages in accordance with the topics and difficulty. The series can help learners grasp 2000 common Chinese vocabulary so that they can conduct daily conversations in the language smoothly and correctly. The books are written in plain language, with vivid dialogues and interesting illustrations. They can be used as both textbooks and extracurricular readers. The reading can be conducted vertically from easy to difficult, or horizontally from one topic to another. The matching game APP "Rainbow Dragon", teaching and learning reference books, evaluation tools and other sorts of products can meet all the requirements for both in and out of the class, both in school and at home.