清 · 张潮
姑gū就jiù诗shī韵yùn言yán之zhī:如rú「东dōng」「冬dōng」韵yùn,无wú入rù声shēng者zhě也yě,今jīn人rén尽jìn调tiáo之zhī以yǐ东dōng、董dǒng、冻dòng、督dū。夫fū「督dū」之zhī为wéi音yīn,当dāng附fù于yú都dū、睹dǔ、妒dù之zhī下xià。若ruò属shǔ之zhī于yú东dōng、董dǒng、冻dòng,又yòu何hé以yǐ处chǔ夫fū都dū、睹dǔ、妒dù乎hū?若ruò东dōng、都dū二èr字zì,具jù以yǐ督dū字zì为wéi入rù声shēng,则zé是shì一yī妇fù而ér两liǎng夫fū矣yǐ。三sān江jiāng无wú入rù声shēng者zhě也yě,今jīn人rén尽jìn调tiáo之zhī以yǐ江jiāng、讲jiǎng、绛jiàng、觉jué,殊shū不bù知zhī「觉jué」之zhī为wéi音yīn,当dāng附fù于yú交jiāo、绞jiǎo之zhī下xià者zhě也yě。绪xù如rú此cǐ类lèi,不bù胜shèng其qí举jǔ。然rán则zé,如rú之zhī何hé而ér后hòu可kě?曰yuē鳏guān者zhě听tīng其qí鳏guān,寡guǎ者zhě听tīng其qí寡guǎ,夫fū妇fù全quán者zhě安ān其qí全quán,各gè不bù相xiāng干gān而ér已yǐ矣yǐ。
张潮(唐)