Dayuan, north of Bactria, was a nation centered in the Ferghana Valley of present-day Central Asia, and even as early as the Han Dynasty, China projected its military power to that area. The Han imperial regime required Ferghana horses and imported such great numbers of them that the rulers of Ferghana closed their borders to such trade. That move resulted in a war that China won. In 102 CE, the Chinese required of the defeated Ferghana that they provide at least ten of their finest horses for breeding purposes, and three thousand Ferghana horses of ordinary quality. However, there are other views: the Records of the Grand Historian and Book of Han provide no description of Ferghana horses, and as it seemed from these chronicles they were not employed in any known Han expeditions and campaigns.
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