As a famous scholar,Mr.Chen Yinque put forward an influential viewpoint that the formation of "the four tones" was affected by the translating reading of Buddhist sutras.It attracted many scholars’ attention during hundreds of years.They discussed many problems of "the four tones",such as the relation between them and the theory of tone in ancient India,the siddham of Sanskrit,the folk songs in southern China,and "the four image" theory in traditional culture.They also studied the beginning time and the inventor of "the four tones".So the information of "the four tones" in the history books collected,and the rational knowledge about the culture exchange of "the four tones" between China and India was built.The fuzzy thought was clarified,and the research on the problem of "the four tones" was impelled than ever.
