Hoshuud Mongols ruled the Khökhnuur (Kokonor) region from 1637 to 1723. This paper, based on the author's History of the Hoshuud published in Mongolian in 1990, uses Chinese, Mongolian, Manchu and Tibetan sources to describe the main features of the history and polity of this time. This Hoshuud polity, known as the rule of the Eight Taijinar of Khökhnuur, encompassed a hereditary feudal system that gradually took its shape with the consolidation of the Hoshuud rule in the Khökhnuur. Furthermore a system of alliances linked feudal lords and connected the Hoshuud court in Lhasa with the Eight Taijinar in the Khökhnuur. The worship of the Khökhnuur Lake represented the ritual expression and concrete enactment of the Khökhnuur assembly where all concerned parties would come together, often including Qing and Tibetan representatives. During this period Mongolian-Tibetan-Manchu relations were shaped by a complex system of alliances and “;priest-patron” relations.