This study looked at the 借字表記 口訣 that our ancestors had used for the study and study of Chinese characters.
During the early Goryeo Dynasty, there was a 口訣 written with dots and lines using 角筆. There is also a 口訣 written with a brush by omitting the Chinese characters' dots and lines. We looked at how these two are related and when they were created. In addition, the function of 口訣 has been changed from interpreting to reading aloud. The cause was analyzed. For this, we looked at cases such as <初雕本 瑜伽師地論>, <舊譯仁王經> and <再雕本 瑜伽師地論>. So far, 口訣 has been used to study 佛經. In addition, the results were passed back to future generations, allowing them to succeed the academic tradition. At this time, we looked at the role of 口訣. In addition, we examined the phenomenon in which intellectuals who learned 儒學 used a new combination of 口訣 rather than 口訣 of 佛經. Also, we investigated the possibility of differentiation strategies in this division.