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What does chestnut cloth mean in the ancient six arts?
It's corn, which is a quantitative conversion method.

Nine numbers: square field, millet, difference, less width, quotient work, equal loss, equation, Underwin, side rail.

Xiaomi (exchange royal communication for quality)

Su law [where these rates are consistent with Datong, they sought each other at that time, and each rate is so. You can make an appointment if you can. Don't do this. ) Millet percentage is 50%, 54%, rice is 60%, rice is 30%, rice is 75%, rice is 63%, rice is 27%, rice is 54%, rice is 90%, rice is 48%, rice 135%, rice is 2 1%, and rice is 42%.