C240 Military Order

Jiang Rann shook his head: "Don't copy it down. You just need to remember the formula yourself, I don't need it."

Wei Shuyu was stunned, she did not expect Jiang Rann to refuse.

Jiang Rann had seen the power of gunpowder, so he believed that he could understand how useful gunpowder could be in this era of cold weapons. Although Wei Shuyu didn't know what Jiang Rann had been scheming