Ping-Ti Ho wrote: ““Just before concluding the part to the T’ang, I wish to look at some offered figures. Concerning T’ang T’ai-tsung’s accession in 617 as well as outbreak of your An Lu-shan rebellion in 755, a span of 138 yrs, the mixture range of this sort of steppe individuals as being the Turks plus the nineteen Turkish T’ieh-Ie