Like its earlier edition, is composed of three integrated volumes: (1) the Blue Book [ ]: introduction; foundation work on pronunciation; lesson dialogues in romanized Chinese and English; appendices; glossary-index; (2) the Red Book [ ]: vocabularies; grammar notes and culture notes keyed to the lessons; exercises; and (3) the Yellow Book [ ]. (There is also a fourth volume, the Green Book [ ], which is sold separately.) Texts of the lessons are in both traditional and simplified Chinese characters, and there is a Chinese introduction for teachers.