> Nod.
> "All right, that's good to know."
> Resume general assembly address.
> "So here we have a source of gunpowder. But the box also had traces of a flammable liquid called kerosene, which was almost assuredly used to ignite the gunpowder from a distance. Based on general interactions here tonight, it doesn't seem like too many people in Gensokyo know about both gunpowder and kerosene, never mind how to apply them. But anyone that spends any reasonable amount of time here would have had the chance to learn about it from the shopkeeper, since it's what the red-white uses to fuel her heater."