 Though the Khiyad Borjigids and the Tayichiuds were closely related and shared a common ancestor in Bodonchar Munkhag, at times they were arch-rivals for the rule of the Khamag Mongol.Though Khabul Khan of the Borjigin had 7 sons, he had designated Ambaghai, a son of Sengum Bilge of the Tayichiud, as his successor.Thus Ambaghai Khan became the second khan of the Khamag Mongol.