probably via Japanese 姑娘(クーニャン) (kūnyan). (SK Standard/Seoul) IPA(key): [kʰuɲa̠ŋ] Phonetic hangul: [<span class="searchmatch">쿠냥</span>] <span class="searchmatch">쿠냥</span> • (kunyang) (Chinese) girl, young unmarried woman...
斗姑娘 黃姑娘 / 黄姑娘 黃花姑娘 / 黄花姑娘 → Japanese: 姑娘 (kūnyan) → Korean: 꾸냥 (kkunyang), <span class="searchmatch">쿠냥</span> (kunyang) → Russian: ку́ня (kúnja) Japanese Wikipedia has an article on: クーニャン...