Boya Chinese is compiled by a group of experienced teachers who teach Chinese as second language. It is divided into four levels: elementary, pre-intermediate, intermediate and advanced. There are altogether 9 books in the set which suits the four-year college study or any short-term and long-term classes. The elementary level is in two volumes of 50 lessons for beginners and covers about 1,000 words. Finishing it will ensure the students to reach level 3 of HSK.