PREVIEW
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In the most primitive tribal eras, humans initially relied on eating raw flesh and blood to obtain salt.
After entering the era of civilization,
the ancestors found salt wells and thus gained methods for processing crude salt.
By the Tang and Song periods, fine salt refined from sea salt gradually appeared and was quite expensive.
The highest price even reached a pound... or rather sixteen taels and ninety wen.
But the term 'fine salt' here is ac ...
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