Yukjin Korean
The Yukjin dialect (Yukjin Korean: 뉴웁말; Hanja: 六鎭말; RR: Nyuummal) is a variety of Korean or a separate Koreanic language spoken in the historic Yukjin region of northeastern Korea, south of the Tumen River. Its phonology and lexicon are unusually conservative, preserving many Middle Korean forms.