《四韵定本》是桐城方以智撰著的一本韵书,成书于清初。书中有见晓组细音读同知照组14字,如晓母“训”与书母“顺”同音。逐一分析这些例子,对照方以智家乡枞阳县浮山镇现代方音“书虚”、“猪居”等同音的事实,可以肯定方以智《四韵定本》中见晓组细音读同知照组现象反映的是其家乡方言的特点。这种现象在时代稍前的明代学者陆容《菽园杂记》和袁子让《字学元元》中也有记载。 “Four rhyme set this” is Tongcheng Fang Yi Zhi’s a rhyme book, into the book in the early Qing Dynasty. The book has seen Xiao group read the same group of fine sound 14 words, such as Xiao mother “training ” and the book mother “Shun ” homonyms. By analyzing these examples one by one, the control party can confirm the fact that Fang Yixing, the founder of the four rhyme texts, has been affirmed by Fang Yizhi’s modern dialect “Shu Xu” and “Piao Habitat” in Fushan Town, Zongyang County, Soprano read Tongzhi Zhao phenomenon reflects the characteristics of his hometown dialect. This phenomenon was also recorded in Ming Dynasty scholar Lu Rong’s “Garden of Miscellany” and Yuan Zi-jing’s “Yuanxue Yuan”, a little earlier in the era.