The Yukjin dialect is a dialect of Korean or a Koreanic language spoken in the historic Yukjin region of northeastern Korea, south of the Tumen River. It is unusually conservative in terms of phonology and lexicon, preserving many Middle Korean forms. Some scholars classify it as a different language. Yukjin speakers currently live not only in the Tumen River homeland, now part of North Korea, but also in diaspora communities in Northeastern China and Central Asia that formed in the nineteenth and twentieth centuries. The dialect is under pressure from Standard Seoul Korean, the language's prestige dialect, as well as local Chinese and Central Asian languages.