Suddenly, one can see a smoky black trace on Lin Yi's back right now.
It's clear without guessing how that trace came about, isn't Lin Yi currently covering his ears and ceaselessly cursing?
"These damned things, how much gunpowder did they use?
This isn't firecrackers, this is practically a hand grenade!"
Indeed, the thing Lin Yi had just lit was not something else, it was the firecrackers he had ordered the workshop to produce.
It was also the product of Lin Yi taking time to specifically ponder over during this period.
After all, in the future, the methods of making black gunpowder were quite easy to find.
Moreover, as a man, handling weapons and arms was always a man's delight.
When Lin Yi used to read online novels at home, he often came across various recipes for gunpowder in those time-travel stories.
Thus, Lin Yi did have some research on gunpowder.
Also, with the presence of the Nanshan Base, it was easy for Lin Yi to successfully develop gunpowder.
