《广韵》“支脂祭真仙宵侵盐”等韵里的喉牙唇音字反切上有对立,韵图把它们分别置于三、四等,这就是人们所说的重纽.如支韵;奇,渠羁切;祇,巨支切.两字的反切上字同属群纽,反切下字也同类,而《广韵》并不认为两字同音,把它们分置于不同的小韵.在韵图里,奇列三等,祇列四等. “Rhyme”, “Yao Zhi Zhexiao Xiaoxie salt” and other rhyme in the mouth of the throat lip sound opposite on the opposite, rhyme map them to three, four, etc., which is what people call the heavy button. Rhyme; odd, channel custodial cut; only giant cut. The word reverse of the word belong to the same group New Zealand, anti-cut the word is also similar, but “Guangyun” do not think the word homonyms, put them in different small In rhyme map, Qilei third, only ranked fourth and so on.