《玉篇》卷末所附的神珙《四声五音九弄反纽图》向以为难释,《中国大百科全书·语言文字卷》“神珙”条说:五音图和九弄图“这两张图很费解,还没有人能作出令人满意的解说”。而两张图中,尤以九弄图更为难释。最近,由许嘉璐先生主编的《传统语言学辞典》(河北教育出版社,1990年)对九弄图作出了较好的解释,其文云:“九弄之图”以“反音、双声、正韵、傍韵、绮错、罗文、叠韵、傍纽、正纽”九种关系为经,以平上去入四声为纬列图,意在使人反复玩习双声叠韵之理,进而掌握反切和分析声韵调 “Jade articles” attached to the end of the scroll of God 珙 “Quanguoliangyinnongnongnuoduo” to think it is difficult to release, “Encyclopedia of China language books,” “God” “Article said: pentameter and nine get Figure ”These two pictures are very hard to understand, no one can make a satisfactory explanation “. The two pictures, especially in the figure nine more difficult to release. Recently, the ”Dictionary of Traditional Linguistics“ (Hebei Education Publishing House, 1990), edited by Mr. Xu Jialu, gave a better explanation of the Nine-figure. , Double, rhyme, prosperous rhyme, mistakes, Luo Wen, stack rhyme, Pong New York, is New Zealand ”Nine kinds of relations for the class, in order to enter the quadruple as weft chart, intended to make people repeatedly play double Reason, and then master the anti-cut and analysis of rhyme tone