Lee, Jang-Song & Shin, Gyeong-Shik. 2004. A Study of Codeswitching by the Korean-Chinese People Living in Chenguoz District of Harbin. The Sociolinguistic Journal of Korea, 12(1). The main purpose of this paper is to analyze Korean-Chinese people's usage of Korean and Chinese in terms of code-switching. To be more specific, the study is focused on analyzing the bilingualism within the Korean community in Chenguoz District of Harbin, Heirungjiang Province, China. The study especially focuses on clarifying the reciprocal relationship between the Korean language and the Chinese language, examining the difference in the usage of the two languages according to age groups. This specific area was selected as our subject, since most of the Korean communities in the Heirungjiang area were formed by descendents of the immigrants from the southern provinces of the Korean Peninsula, which allows the comparison between the language used today and the language their ancestors used before moving to this area. Due to the industrialization and innovation brought about by the opening of the Chinese society, the fast outward flow of youths to urban areas, and greater assimilation threats from the embedding Chinese culture, we are not too sure if the Korean language will continue to be used in the future. Given these circumstances, we consider this research most opportune in that it provides a look into the Korean community that developed its distinctive culture and language within an isolated cultural environment.