| After becoming a book, Shiwen was repeatedly copied, printed, and proofread by later generations, and it was inevitable that there were some errors in the Song version of Shiwen, such as false words, missing words, reversal of words, and confusion in order. On the basis of fully absorbing previous research results, this article summarizes four methods for investigating and correcting repeated sound cutting of the Song version of Shiwen from the perspectives of statistical data, phonetic examples, version variations, and phonetic deduction. This provides useful reference for further sorting out the book and correctly understanding the sound system of Shiwen. |