The first emperor of Daning, Xuan Feng, passed away, and the second emperor Xuan Quan succeeded to the throne. At the beginning of the new dynasty, they bloodyly suppressed the vassal kings who had been the hero, and began to rule brutally. They killed Xiao Gang, the king of Xuan in southern Xinjiang, and forced his son Xiao Chen to rebel against Ning in southern Xinjiang...