The most powerful and most literate of the plateau khanates, straddling the Altai, Turkic-speaking despite its Mongolic name ('eight'). Unlike its neighbours it had a single ruling dynasty, frontier guards, a throne and a seal kept by a Uighur scribe — the state whose captured scribe Tatar-Tonga gave the Mongols their alphabet.
Destroyed by Chinggis Khan in May 1204 on the southern slopes of the Altai, where Tayang Khan fell; his son Kuchlug fled to the Qara Khitai, usurped its throne in 1211 and was killed by the Mongols in 1218.
The fullest short account of Naiman territory, the divided kingship, the literate chancery, and the 1204 destruction.
Dates the campaigns precisely (1199 joint attack on Buyruq; May 1204 final battle) and follows Kuchlug into the Qara Khitai.