For instance, in the Qin dynasty the prophecy "Hu will destroy Qin" was current. The first Qin emperor believed that "Hu" referred to the nomadic herding peoples of the north, so he sent troops to attack the Huns. But later the Qin dynasty fell just the same--in the reign of the emperor's son Hu-hai.
像秦朝時盛傳「亡秦者胡」，秦始皇以為「胡」指的是北方遊牧民族，便派兵攻打匈奴，但後來秦王朝還是亡了，亡在秦始皇的兒子胡亥手裡。