This textbook is designed for students of Chinese as a second/foreign language who have had three years of study at college. Focus on topics of international business and foreign trade, the book offers advanced training in vocabulary, grammar, and rhetoric. With an emphasis on communication and practicality, the textbook contains detailed explanations for word usages and sentence structures, and ample exercises of different kinds, each targeting at a specific skill area. It also includes various authentic materials, including documents, forms, and letters, etc. in addition, it provides some useful cultural information and business background knowledge in each lesson.