The present paper,digging into written and unearthed literature revealing wheat's changing role in the For-mer and Later Han dynasties,illuminates that the popularity of wheat in the Former Han should be attrib-uted to the importance attached by the central government having a long border war with Xiongnu tribe to wheat,which could be used to feed both warhorses and soldiers,and that wheat turned into an everyday food due to the fact that the war against Xiongnu had subsided in the Later Han.
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