Chapter 1571: Sudden Visit

l and potassium nitrate as possible from the market.Ancient potassium nitrate was actually quite easy to obtain, but even then she had to stockpile it, lest something like the sulfur incident happen a...I'm fortunate to witness it today, this trip wasn't in vain.""...."Feng Ming's lips curled into a thin line, his obsidian eyes inlaid with gold swept over the person unintentionally. There wasn't a sh...