Saying she knew where the raw materials were, that was Pei Shu'er's nonsense.
When she traveled through time, with the dream figure's guidance, she already knew there would be a time to make gunpowder, so she started collecting these raw materials.
When she led people to a mountain to dig out the "saltpeter mine" she had prepared in advance, during the excavation, they unexpectedly uncovered a real saltpeter mine.
At this moment, Pei Shu'er was stunned, suspecting she was not yet awake.
The saltpeter mine in front of her was evidently much more than what she had buried in the mountain.
Was this luck a little too outrageous?
Pei Shu'er ordered people to dig up the ore and also sent for another batch of people from the Deserted Mountain to come over for mining, promising them rewards.
As for the military camp, no more people could be requisitioned from there.
