Back Шаснаццаць акруг BE Seize préfectures French Enam Belas Prefektur ID 燕雲十六州 Japanese 연운십육주 Korean Янь-Юний 16 жөү MN Шестнадцать округов Russian Šesnaest prefektura SH Шістнадцять округів Ukrainian Yên Vân thập lục châu VI
The Sixteen Prefectures, more precisely known as the Sixteen Prefectures of Yan-Yun (traditional Chinese: 燕雲十六州; simplified Chinese: 燕云十六州; pinyin: Yānyún Shíliù Zhōu) or the Sixteen Prefectures of You-Ji (Chinese: 幽薊十六州; pinyin: Yōujì Shíliù Zhōu), comprise a historical region in North China along the Great Wall in present-day Beijing, Tianjin, and part of northern Hebei and Shanxi. It was a site of constant military and political conflict between various dynasties from the end of the Tang dynasty until the establishment of the Yuan dynasty.