Juan-juan (Mongolian nomads); Jou-jan; Rouran Khaganatedanh từ
Rouran (a khaganate that ruled much of present-day Mongolia, northern China and southern Siberia from the mid-4th to the mid-6th centuries, formed from a tribal confederation of pre-Mongolic peoples of Donghu origin)tên riêng
Rouran (the language of the Rouran khaganate)tên riêng