About the Teaching in Changing Tone of the Rising Tone in Putonghua

As an important part of modern Chinese phonetic teaching, the teaching of the rising tone and its changing tone have always been the difficulty in of the morden Chinese and foreign Chinese phonetic teaching. According to the principles of the intonation speed and tone changing, we should mainly master three kinds of changing tones in teaching: First, the changing tone of three rising tones; secondly, the changing tone of three rising tones; thirdly, the changing tone of four or more than four continuous rising tones.