This series is composed of eight books, which is designed according to the task-based teaching theory and is arranged in accordance with functional items of business Chinese. There are two books at the elementary level, with the emphasis on the simple daily communication tasks in business activities. There are four books at the intermediate level, which are divided into two groups, i.e. tasks about living and tasks about business. Most of the main functions of business Chinese activities are covered. The two books at the advanced level are written with the real business corpus, focusing on the practices of listening, speaking, reading, and writing.