Alat tribe

The Alat (a.k.a. Ala-at, Ala, Alachin, Alagchin, Alchin, Alchi, Alayontli, Ulayundluğ (اُوﻻيُنْدْلُغْ) ("piebald horse", pinto); Boma (駁馬 or 駮馬 "piebald horse"), Helai (賀賴), Helan (賀蘭), Hela (曷剌), Bila (弊剌), or dru-gu ha-la-yun-log ("Ha la yun log Turks")) were one salient Turkic tribe known from Chinese annals.

Alats were possibly identical to the Luandi, or Xueyantuo, or Khalajes, the last group being a Turkic Central Asian people known to medieval Arab and Persian Muslim geographers and in Bactrian inscriptions.

Literature on Alats is very rich; Alats were a subject of study by Tangshu, Jiu Tangshu, Tang Huiyao, N.Ya. Bichurin, S.E. Malov, N.A. Aristov, Grigory Grum-Grshimailo, Yu. Nemeth, G. Howorth, P. Pelliot, L. Hambis, and others.