石敬瑭
The Later Tang had a few years of relative calm, followed by unrest. In 934, Sichuan again asserted independence. In 936, Shi Jingtang, a Shatuo jiedushi from Taiyuan, was aided by the ethnic-Khitan Liao dynasty in a rebellion against the Later Tang. In return for their aid, Shi Jingtang promised annual tribute and the Sixteen Prefectures (modern northern Hebei and Beijing) to the Khitans. The rebellion succeeded; Shi Jingtang became emperor in this same year.