The Treasure of the Ancestral Clans of Tibet is a translation of Bod mi bug dong drug gi rus mdzod me tog skyed tshal zhes bya ba bzhugs so composed jointly by Gyilung Tashi Gyatso and Gyilung Thugchok Dorji, Tibetan scholars in Tibet, and published by the Religious Affairs Committee of Qinghai Prefecture. Based on various old Tibetan records, folksongs, biographies, oral stories, etc., this book discusses the origin of Tibetan people, supporting the traditional Tibetan theory that Tibetans originated from a monkey father, and emanation of Avalokiteshvara, and a mother rock-dwelling ogress.