By the Kabul valley route, which includes at its head the group of passes across the Hindu Kush which extend from the Khawak to the Kaoshan, all those central Asian hordes, be they Sacae, Yue-chi, Jats, Goths or Huns, who were driven towards the rich plains of the south, entered the Punjab.
300) India was invaded from the north by tribes partly of Parthian and partly of Turki (Yue-chi, &c.) origin.
Our earliest information about the Ephthalites comes from the Chinese chronicles, in which it is stated that they were originally a tribe of the great Yue-Chi, living to the north of the Great Wall, and in subjection to the Jwen-Jwen, as were also the Turks at one time.
The Chinese statement that the Hoa or Ye-tha were a section of the great Yue-Chi, and that their customs resembled those of the Turks (Tu-Kiue), is probably correct, but does not amount to much, for the relationship did not prevent them from fighting with the Yue-Chi and Turks, and means little more than that they belonged to the warlike and energetic section of central Asian nomads, which is in any case certain.
This may, however, be due to the fact that their contact with civilization was so short; the Yue-Chi and Turks had had some commerce with more advanced races before they played any part in political history, but the Ephthalites appear as raw barbarians, and were annihilated as a nation in little more than a hundred years.