d his hand dismissively and said impatiently, "That's enough, get out of here. You lot never give this king a moment's peace."The old man opened his mouth, but in the end said nothing. He sighed and l...ses were quite widespread, the consumption volume was actually not large, so the price was very cheap.Now that the Qin Empire has invented firearms, the demand for gunpowder will skyrocket. This is so...