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... saltpeter in temperatures around fifty to sixty degrees is very fast, requiring someone to replace a batch every one or two hours, and then dry the previous batch for future use.
Actually, this isn’t very troublesome, but the real trouble is that this only applies to noon.
The temperature at night is a completely different matter.
As the night temperature drops, the saltpeter’s effect becomes greater, causing the temperature in the herbal cultivation room to drop signifi ...
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