Analysis of information sources in references of the Wikipedia article "Khả hãn" in Vietnamese language version.
territories within his empire. He took the title "Heavenly Khan," thus designating himself as their ruler. A little later the Western Turks, although then at the height of their power, were badly defeated, and the Uighurs, a Turkish tribe, were detached from them and became sturdy supporters of the T'ang in the Gobi. The Khitan, Mongols in Eastern Mongolia and Southern Manchuria, made their submission (630). In the Tarim basin
