Kang, Huisuk. 2003. A Synchronic Study of the Mother Tongue Usage of Korean-Chinese Students Living in Yeonbyeon, China. The Sociolinguistic Journal of Korea, 11(2). This study aims to synchronically analyze the mother tongue usage of Korean-Chinese People living in Yeonbyeon, China. The study is based on the writing materials of a literary contest for Korean-Chinese students.Korean-Chinese people living in Yeonbyeon have been maintaining their mother tongue even though they are living in the downward pressure of a bilingual society. The linguistic characteristics of their mother tongue are composed of three aspects: the reflection of regional dialects such as that of Hamgyeng-do, the conservative reflection of diachronic components and the innovative reflection of linguistic change in progress. These heterogeneous linguistic characteristics have formed depending on their peculiar culture and society. In particular, it is interesting that their language contact with both Chinese and South Korean have caused them to form new words, common expressions and sound changes in progress.