Qaan

Kaan/Khan/ Kahn (Mongolian: хаан, xaan; ᠬᠠᠭᠠᠨ, qaγan; Turkish: kağan or hakan; Azerbaijani:xan; Ottoman: han; Old Turkic: , kaγan; Chinese: 可汗, kèhán Goguryeo : 皆, key; Silla : 干, kan; Baekje : 瑕, ke) Persian: خان, is an originally Mongol and subsequently Central Asian title for a sovereign or military ruler, widely used by medieval nomadic Turko-Mongol tribes living to the north of China. "Khan" is also seen as a title in the Xianbei confederation for their chief between 283 and 289. The Rourans were the first people who used the titles Khagan and Khan for their emperors, replacing the Chanyu of the Xiongnu, whom Grousset and others assume to be Turkic. It was subsequently adopted by the Ashina before the Göktürks (hence the Turkic peoples) and the Mongols brought it to the rest of Asia. In the middle of the sixth century it was known as "Kagan – King of the Turks" to the Persians.