four hundred years Central China was generally at peace, and on the whole well governed, a cycle of strength and prosperity unparalleled by anything in the experience of the Western world.
Only the first of the Han monarchs continued the policy of Shi-Hwang-ti against the literati. His successor restored the classics, for the old separatist tradition was broken, and in the uniformity of learning throughout the empire lay, he saw, the cement of Chinese unity. While the Roman world was still blind to the need of any universal mental organization, the Han emperors were setting up a uniform system of education and of literary degrees throughout China that has maintained the intellectual solidarity of that great and always expanding country into modern times. The bureaucrats of Rome were of the most miscellaneous origins and traditions; the bureaucrats of China were, and are still, made in the same mould, all members of one tradition. Since the Han days China has experienced great vicissitudes of political fortune, but they have never changed her fundamental character; she has been divided, but she has always recovered her unity; she has been conquered, and she has always absorbed and assimilated her conquerors.
But from our present point of view, the most important consequences of this consolidation of China under Shi-Hwang-ti and the Hans was in its reaction upon the unsettled tribes of the northern and western border of China. Throughout the disordered centuries before the time of Shi-Hwang-ti, the Hiung-nu or Huns had occupied Mongolia and large portions of northern China, and had raided freely into China and interfered freely in Chinese politics. The new power and organization of the Chinese civilization began to change this state of affairs for good and all.
We have already, in our first account of Chinese beginnings, noted the existence of these Huns. It is necessary now to explain briefly who and what they were. Even in using this word Hun as a general equivalent for the Hiung-nu, we step on to controversial ground. In our accounts of the development of the Western world we have had occasion to name the Scythians, and to explain the difficulty of distinguishing clearly between Cimmerians, Sarmatians, Medes, Persians, Parthians, Goths,
