Fanqie (反切) is a traditional method of indicating the pronunciation of a Chinese character by using two other Chinese characters, one having the same consonant as the given character and the other having the same vowel (with or without final nasal) and tone. There are seven problematic aspects regarding Fanqie (反切) phonetic notation of polyphonic characters in The Grand Chinese Dictionary, 漢語大詞典. The first, the cited Chinese characters used as phonetic notations are wrong; the second, the attributions of phonological status about some polyphonic characters are not correct; the third, one or two phonetic notations are missing among several pronunciations of the polyphones; the fourth, the materials for phonetic evidences are neglected; the fifth, the evidences of some ancient sounds are lagging because of not finding the earliest evidence in citing ancient sound; the sixth, the main sounds and the secondary ones are reversed; and the last, the selected Chinese characters are not appropriate in some Fanqie phonetics.

Categorizing dialect and the phonetic notation (《方言類釋》) written in 1778 is a specialized dictionary which collected and recorded Chinese language vocabulary in the middle of Qing dynasty. As far as stylistic rules and layout is concerned, Chinese character was the main index and their pronunciations of Mongolia, Manchu, Japan, and Korean were recorded in Korean alphabet spelling. Xu Mingying (徐命膺) and Hong Mingfu (洪命福), who accepted the king's command, wrote the book so as to easily communicate with Japan and China. Chinese language had been changing. On the contrary, North Korean language conserved a lot of ancient Chinese words leading to a lot of problem communication with the Chinese. This is the reason why two authors had to accept the king’s command to finish the book. The book included abundant Chinese vocabulary also with "Chinese dialect" from Guangzhou, Guangdong province, Shanxi Fen states and southern Jiangsu, Hunan Changsha. These materials are the most valuable complement for the research on the history of modern Chinese history. At the same time those exterior material can also be added by Chinese scholars in the Qing dynasty for enriching interior dictionaries. At the same time, the dialect also provided such clues that are vocabulary rooted in powerful dialect.