The Reading Program series focuses on learning the Chinese language 100 words at a time. Each passage in the books is written using word repetition to build sentences using previously mastered words, while simultaneously introducing new words. This repetitive and progressive method is the most effective way to learn a language. Each level is comprised of eight books, and each level introduces new words in sets of 100.The theme Story series teaches children to recognize and speak Chinese words as they make up stories comprised of the study words. Simplified Chinese characters.