 In the 10th century the remaining Shatuo branch of the Chuy tribe possibly joined Mongolic-speaking Tatar confederation in the territory of the modern Mongolia, and became known as Ongud or White Tatars branch of the Tatars.Another Yueban-descended tribe, Chumukun, might be associated with the Kimek tribal union, which existed in the period of 743-1050 AD and was well-known to Persian and Arab writers.Abu Said Gardizi (d. 1061) listed the Kimek khaganate's seven constitutents as Imi, Yemeks Tatars, Bayandur, Kipchaks, Lanikaz, and Ajlad.