This world has gunpowder and fireworks, but no one has yet connected gunpowder, fireworks, and the military.
Lin Wanqing discovered this and began to try to recall the proportions of explosives from her previous life. As long as she could research explosives, she could directly advance the era of cold weapons to the era of firearms.
As long as she firmly grasps this technology, not only will the Northern Li and the Great Chu submit to her, but the entire Nine Provinces will also submit to her.
During this period, Lin Wanqing devoted almost all her time to researching and making explosives.
In her previous life, she wasn't an expert in this field either; her exposure to this knowledge came from games or from glancing at short videos she occasionally saw.
When she needed to use it, those memories became blurry and confused. She could only slowly recall them and try little by little, but at least she knew the direction.
After many trials, she finally succeeded in mixing sulfur, saltpeter, and charcoal in a certain proportion!
Although the research was completed a little later than she had promised the King of Bei Li, it was still a success, wasn't it?
With this technology in hand, wouldn't the King of Beili cherish her like a treasure?
The only thing to consider now is that although Beili has a lot of saltpeter, it does not produce sulfur and can only purchase it from countries such as Da Chu, Yun Qi, and Xiao Yue.
However, these three countries control sulfur as much as they control ironware and weapons. Buying small quantities is fine, but if there is a large demand, it is very difficult to obtain enough.
However, in this world, as long as one is connected to power and money, there is no one who cannot be exploited.
The only reason you can't use them is that you haven't been given enough chips.
Therefore, Lin Wanqing persuaded the Northern Li King to secretly arrange for the Wei family to help purchase sulfur through Wei Yingshuang, offering ten times the price of ordinary sulfur.
For the Duke of Dingguo's mansion, it was not a big deal that others could not buy it.
Explosives were an absolute secret to Bei Li, and even the Duke of Dingguo had no idea what Bei Li intended to do with so much sulfur. Faced with such enormous profits, who could refuse?
As for Su Ruojin's warning, Lin Wanqing didn't remember it at all. Even if she did, she would only think that Su Ruojin was just jealous of her.
It would take some time to transport sulfur from Da Chu, and it would also take time to make explosives, so they wouldn't be needed on the battlefield for a while.
The explosives she is now developing must be filled in a closed space, buried in the ground, and the fuse must be lit before they can be used.
This inevitably leads to many limitations.
For example, you might need to lure the enemy to a specific location and detonate the explosive at that specific time.
Moreover, sometimes the fuse malfunctions; it either doesn't explode or explodes very quickly, leaving the person who lit the fuse no time to escape.
Many people have already died for this research, and she still needs to make some improvements.
Even with these drawbacks, the power of this explosive was enough to shock King Li of the North.
Based on this alone, Lin Wanqing has completely secured her position in Bei Li. As long as she doesn't hand over the formula for making explosives, no one will dare to touch her.
After Lin Wanqing and the Prince of Beili returned to the palace, she went to the Prince Qin's residence.
Upon seeing her, Wei Yinshuang quickly rose, knelt, and bowed, saying, "This humble woman greets Your Majesty."
At this moment, Wei Yinshuang's eyes no longer held the arrogance of before; she only felt fear and respect when facing Lin Wanqing.
Although Wei Yinshuang didn't know exactly why Lin Wanqing was favored by the King of Beili, she had realized during her time in Beili that if she wanted to survive and live a better life, she could only rely on Lin Wanqing.
When Qin Wang hung her up in the room and whipped her every day, Wei Yingshuang felt that she was about to die in Bei Li.
Just then, Lin Wanqing arrived and promised Wei Yingshuang that as long as she listened to her, she could keep her alive.
To Wei Yingshuang at that time, Lin Wanqing was like a savior. In order to survive, she didn't think about anything else and nodded repeatedly.
Lin Wanqing found Prince Qin and said something, and Prince Qin immediately ordered Wei Yingshuang to be released and restored to the status of Princess Qin, but she was not allowed to leave the mansion at will.
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