This article delves into the development of Japanese Chinese character variations, and how they fit into the broader study of Chinese characters. By examining the differences between early Japanese kanji and modern Japanese writing systems, as well as the varying approaches of Chinese and Japanese scholars in studying Japanese kanji, we can propose a more fitting classification and naming method better suited to studying Chinese characters. To that end, we take the Wamyō Ruiju Shō (倭名類聚抄) as an example, exhaustively sorting out the situation of variant characters in the manuscript across different eras, and referring to other ancient Chinese dictionaries from the same period. This article introduces concepts like “inherited variants” and “Japan saved variants” to make studying these characters more comprehensive.

In recent years, the phonetic study of foreign dialects is wide and deep, but the study on the history of researches on phonetic aspects of foreign dialects is rare. Even rarer is that on the Chinese characters in Korean. With the help of China National Knowledge Infrastructure (CNKI), this paper attempts an exhaustive analysis of the content, method and condition of research on the basis of academic researches on phonetic aspects of Chinese characters in Korean. Thus, this work is expected to make clear the researches and problems in this field in China so as to facilitate quick references for other scholars.

In Korea, there are some ancient dictionaries written with Chinese characters. We digitized and built corpus of ancient dictionaries written with Chinese characters. We hope that the Chinese cultural circle of scholars to share these resources. Use of these resources to study in the Korean historical linguistics, lexicographer learn history and culture of science, the communication history of Chinese characters and Chinese characters history of the development.