Listening to the sour tone of these people, Yan Lanfeng glanced at these people, and thought for a moment with his chin in his hand.

He was very interested in this thing called "fireworks".

Novelty, fun, good-looking, plus you can go to the sky...... It's simply the best plaything for adults.

Make an appointment with three or five friends, or bring a girl and light a firework...... The face is enormous.

As the head of the household, Yan Lanfeng's sense of wealth is sensitive, and he subconsciously feels that this will be a way to make money.

There are too many rich people in Beijing, whether it is a businessman or an official, who in the family does not open a few industries?

These people don't care about money at all, they just care about having nowhere to spend it.

If they can spend their money with dignity, it is what they care about the most.

This fireworks...... There's a head!

I just don't know, how much profit there is, how many people are interested......

……

"Fang Jue, you want to attract that Yan Lanfeng in this way, it seems that you have failed?" On the way back, Ye Hongyi said.

Fang Jue said: "It's a household book, he has eyesight, and after I set up a stall tomorrow, he will come to the door." ”

"Hmm...... I'll send you back first, there have been many foreign spies in the capital recently, and it's not safe. ”

After sending Fang Jue to Fangjiazhuang, Ye Hongyi left, there was no curfew yet, and she still had time to return to the city.

Although the two often play together, they are not married, so Ye Hongyi naturally can't stay overnight, lest outsiders gossip.

"Young Master, why did you let Miss Ye go and not leave her behind?" Dianyi came out of nowhere and said with a smile.

"I deliberately disappeared so that I could teach Miss Ye to send you back and create opportunities for the two of you, why don't you know how to grasp it so much?"

Dian Yi looked at his young master helplessly, feeling that if this continued, he would have to see the little young master born in the year of the monkey.

"If you're okay, come and help, I'm going to make some fireworks." Fang Jue said.

"Fireworks?"

When I think back to it, in those years on Taihuang Mountain, the gorgeous and beautiful nights suddenly lit up.

"Young master, are you going to show the gunpowder?"

The musket was only known to the emperor and others, and if there were fireworks, the gunpowder would be known.

Once gunpowder comes out, it will eventually be the way to get rid of it.

This sentence, Dianyi remembered that the young master said.

"As long as you grasp the manufacturing process and don't let the formula go out, it doesn't hurt for outsiders to get the finished product."

One nitrate, two sulfur and three charcoal, it seems to be very simple, but in fact, this is just a basic recipe, and it is not very powerful.

It's almost the same as making fireworks, but if you use them to make weapons, you have to be finer.

As for the finished weapon-grade gunpowder, Fang Jue will only do it in the musket bureau, and will never take it out to show people outside.

"Let the world know about the fireworks first, and then the muskets will appear, then it will not be so difficult to accept."

"Be careful, although the gunpowder of fireworks is not very powerful, but if it is large, it is very dangerous, and it must not be frivolous......"

"Yes......"

……

The fireworks of the Qinhuai River last night made many people see it, and it had already spread in the morning.

When King Qin came to Fangjiazhuang to attend class, he asked about it.

Fang Jue said, "Then today, let's take a chemistry class." ”

"Chemistry?" King Qin smiled bitterly, "Didn't Mr. say the exam?" ”

"Then take the exam first." Fang Jue said.

King Qin was speechless, teacher, don't you know your teaching progress?

I'm a student, it's really not important.

Fang Jue handwrote a scroll.

"What kind of paper is this?" King Qin was surprised.

Fang Jue uses his own Zhuangzi, using bamboo as the raw material to make high-grade rice paper.

However, these things do not need to be taken out for the time being, and the road has to be taken step by step.

"You just have to answer." After Fang Jue finished speaking, he sat down and pretended to sleep.

He almost fell asleep, and last night with his family, he made fireworks until the second half of the night, and he barely slept much.

The raw materials had been prepared for a long time, and they were stored in several cellars in Fangjiazhuang, which were originally prepared for muskets.

But with the support of the Ministry of Household and the Ministry of Industry, there is no shortage of raw materials and workers, and the Musket Bureau does not need Fang Jue to worry about it, so he will use those things to develop a side business.

Fireworks, if done well, are also an industry.

"Teacher, teacher?"

King Qin's face and plate were all in front of Fang Jue's eyes, and Fang Jue saw him in a trance.

"Oh...... Done? Fang Jue asked.

King Qin nodded and respectfully handed over the scroll.

It can be seen that he is very attentive, the volume is neat, and he answers a lot of questions in every question...... But not a few.

"Teacher......" seemed to notice that there was some banter in Fang Jue's gaze, and King Qin lowered his head.

Fang Jue sighed and said: "You are busy with government affairs, and I don't expect you to learn any skills in these studies." ”

King Qin is not a genius in these aspects after all, so when he doesn't have much time to study, it is difficult to pass.

With just one glance, the hundred-point volume drawn up by Fang Jue, King Qin had less than fifty points.

It seems that this guy didn't regard what he taught him as really good, and he didn't usually take the time to study.

Fang Jue saw King Qin's mentality, he just wanted to mix with himself and get the support of himself and the Emperor Zun Pavilion.

In the eyes of a prince, these new learnings are really not as important as learning government and military affairs.

"Teacher, the disciple is wrong." King Qin said.

Fang Jue shook his head: "You are the prince, and what you think about is the world, not a corner of my manor." ”

"You don't have to come to class these days, what I'm going to teach you, that's all for now."

He didn't even plan to lay a good foundation, and Fang Jue didn't expect to be able to teach King Qin to be a modern talent.

Since you don't want to study seriously, then don't come, I will also find it troublesome if you find it troublesome.

"Teacher, I was really wrong, I will definitely learn by heart!" King Qin actually knelt down, sweating profusely, for fear that Fang Jue would think that he was an unteachable and stubborn person.

Fang Jue said: "My novel knowledge must be imparted, you may not have this talent, I will find some more people to try." ”

"As a prince, coming to learn these miscellaneous sciences will not be of any benefit to your future prospects, and you should not have had extravagant hopes for you in the first place."

Hearing this, King Qin trembled.

How could he not understand the dissatisfaction and rebuke in this.

After thinking about it, I have gradually slackened off on Fangjiazhuang's side these days.

For a prince, and a prince who is extremely favored and is likely to become a crown prince, the first thing is to learn military politics.

The things sent by the emperor were more and more handy for King Qin, but the knowledge taught by the teacher was gradually neglected.

From the bottom of his heart, King Qin was very curious about Xinxue, but he knew what he wanted, and it was a waste to spend a lot of time on Xinxue.

And King Qin didn't think that Fang Jue really regarded him as a disciple and wanted to pass on his skills.

It's just for him to be a bridge, deliver news to the emperor, and invest in himself, the future prince, in advance.

According to this theory, even if King Qin touches the fish, Fang Jue will not be able to explain it thoroughly, and the two sides will get by like this.

But today's answer sheet, Fang Jue suddenly had a difficulty, which made King Qin a little surprised and a little panicked.

Why is Mr. Fang like this, it's just a joke, why is he so angry?

Seeing that King Qin was frightened, Fang Jue glanced at him and said, "I once taught you a sentence in the previous course, knowledge is the primary productive force, if you don't understand this, you won't know the meaning of new learning." ”

"Go back, you're still my student, you just don't have to come to class."

"Teacher!" King Qin panicked.

He realized that he had drifted a little bit away these days.

If my father knew that he had been expelled from school by Mr. Fang, where would I be?

King Qin, who had fallen to the bottom, didn't want to try that taste again, he knew that Fang Jue was becoming more and more important in the eyes of his father, but he was afraid that he would soon be able to catch up with Zhuge Shoufu.

Such a talent, if he dislikes a prince, then this prince will most likely be questioned about his character.

For the soon-to-be-ascended self, it is a big stain.

What am I going to do......