This book presents a comprehensive and in-depth investigation on the relationships among tone, intonation and sentence final particle (SFP) for the first time, explaining and verifying them from many aspects. The book investigates one of the most cutting-edge research topics in the field of international linguistics of the past decades. The research has a significant impact on the fields of Chinese language history and syntax. The emergence of SFP will also become an important symbol of the evolution of language types.