On Fang Yizhi's Study of Cognate Words

It is an important content to analyze cognate words.Although FangYizhi has not yet raised the terms like “the cognate or “the word family, he puts close pronunciations and relative meanings together to analyze their relationships between the pronunciation and the meaning. What he has done is just studying cognate words and has analyzed lots of cognate words in his TongYa so as to provide us with a great many materials.