Integrated Chinese is a four-volume series designed for two years of study at the college level. Each volume consists of Textbook, Workbook, Character Workbook, Teacher’s Resources, streaming audio and video components. Volumes 1 and 2 kept the core from the 3rd edition that everyone likes but added enhancements to update its Chinese language usage. In Volumes 3 and 4, changes were made to ensure a more gradual transition between each level.