In the school, everyone looked at Xiao Ming, and Luo Xin was also full of expectations.

Qingzhou’s artillery is now a smoothbore gun, which is a direct-fire gun. In ancient times, the gun was a reduced version of the artillery. Because of this, the principle of three points and one line also applies to firearms.

But these three points and one line do not mean that you just need to install a front sight and rear sight. Different guns have different sights and sights. This requires testing. After all, the power of different guns and the weight of the shells are different.

Therefore, his artillery also needs to get data after testing to install accurate sights and sights.

"This is the parabolic principle. The shell will be affected by gravity when it is shot out," Xiao Ming said.

When he said this, the entire school showed a confused look.

Looking at the confused faces, Xiao Ming suddenly felt a little tired. This is the purpose of setting up a school. This matter cannot be taught to Luo Xin in three or two days.

First of all, he had to teach them addition, subtraction, multiplication and division, and then starting from basic physics, it was enough to reach the second grade physics level. He estimated that even with the high quality of his technology spar, it would take close to a month. Let Luo Xin and others learn how to calculate the impact point, and complete the test of front sight and sight.

Of course, he would not sell the sights and guns with the rear sight, but keep them for his own use. Once he had the sights and sights, it would be a technological upgrade.

When the two armies confront each other, the advantage of this artillery will immediately become apparent.

"His Royal Highness, we don't understand what you said." Luo Xin is a military commander after all, and he has a headache for this knowledge.

"You'll understand after you learn it." Xiao Ming ignored Luo Xin. He didn't plan to talk to Luo Xin about this day and the place. Anyway, this guy walked on land. After learning, it's not very useful. This must be said, fortunately, Yue Yunru can teach, much better than Luo Xin.

Then he began to talk about basic mathematics and wrote the basic Arabic numerals on the blackboard. In future sailing, Yue Yun will also need to perform mathematical calculations to determine the position, so he also has to learn this knowledge.

The rest of the day, Xiao Ming basically spent in the school, from simple Arabic several times to addition and subtraction within ten, to more complex calculation methods.

Because they are all adults and have the initiative to learn, the effect of this afternoon's course is good, and because of the effect of the technology spar, they remember most of the content.

In the evening, Xiao Ming asked Lu Tong to arrange food and lodging for Yue Yun and others, and ordered Luo Xin to come and listen to the lecture every afternoon before returning to the palace.

At this time, the sky was already a little dim, and he was about to go back, when he suddenly saw a person hurriedly approaching from the entrance of Bowen Academy.

"Big rich!" Xiao Ming looked at this person clearly and said in surprise.

The visitor was Qian Dafu. When he saw Xiao Ming, Qian Dafu immediately said: "His Royal Highness, the saltpeter mine has finally been found, and we also found a lead mine!"

"What, really?" Xiao Ming was overjoyed.

"Yes, Your Highness, we finally found it." Qian Dafu was a fat man before, but now he is dark and thin, and his expression is excited.

Xiao Ming was equally excited. He said, "Great, rich, you made a great contribution."

"As long as you don't delay the affairs of your Highness, the old slave will be happy. As for the credit, the old slave really doesn't care." Qian Dafu said with a smile.

Xiao Ming was moved in his heart. This Qian Dafu was someone he completely believed in, so he gave him the heavy task of mining.

What he lacks now is resources.

"Go back to the palace, I will let the kitchen prepare a big meal for you." Xiao Ming laughed.

When he returned to the palace, Xiao Ming asked the kitchen to prepare food, and went to the main hall with Qian Dafu and asked about the saltpeter mine.

"His Royal Highness, this mine is really hard to find. We searched the place where His Highness roughly said, but found nothing. Does Your Highness know how to find it later?" Qian Dafu said.

Xiao Ming shook his head.

"At that time, we were too far from the nearest village to go back, and we ran out of food. Several soldiers discussed going into the mountains to hunt. Unexpectedly, when chasing a hare, the hare suddenly got into a cave in the woods. In the middle, a few soldiers went in and suddenly found that there was saltpeter in this cave." Qian Dafu was excited.

What Qian Dafu said was very simple, but Xiao Ming could appreciate the hardship of this mining search.

At this time the saltpeter mine has made progress, and neither the Shu king nor the court can use this to blackmail him.

"It seems that this king would like to thank this rabbit." Xiao Ming looked happy and said, "Where is this lead mine?"

Qian Dafu drank the water and said, "The lead mine is a little far away from Qingzhou, near Yizhou."

Yizhou is about two hundred miles away from Qingzhou, which is indeed a little far away. He said: "It's far, it's better than nothing, but is there still no progress in this tungsten mine?"

Qian Dafu shook his head and said regretfully: "I haven't found any tungsten mine yet, it's just your Highness. Why are you looking for this tungsten mine?"

"Because the smelting of tungsten ore and wrought iron can make the material harder, if there is tungsten ore, this king can try to produce tungsten alloy, so that the manual lathe has qualified tools, and then this king can make a It's a kind of magical machine." Xiao Ming said, the mysterious machine in his mouth is naturally a steam engine.

Qingzhou's population is too small. Once the steam engine is available, he can replace the lack of manpower with steam engine power.

More importantly, this can greatly increase the steelmaking capacity of the steel mill.

Qian Dafu didn't seem to understand, he smiled: "In this case, the old slave will focus on finding tungsten mines."

The saltpeter mine solved the problem of gunpowder, and the lead mine solved the problem of artillery shells and future firearms bullets. Xiao Ming had a big heart, but next he wanted to prepare for the next technological upgrade~lightnovelpub.net~ and this is it. Let the lathe play a real role.

"No hurry, this time you take a rest and then leave. This king doesn't want to tire you out anyway," Xiao Ming said.

The two spoke for a while, when Luluo walked in and said, "Your Highness, the food is ready."

"Let's go, eat, this king asked Pao Ding to prepare your favorite smoked trotters." Xiao Ming smiled.

When he mentioned this, Qian Dafu suddenly laughed, "His Royal Highness, the old slave is just a bite. It's worth it to be tired after eating this pig's feet."

Xiao Ming burst into laughter when he heard the words, Luluo also smiled lightly, covering her mouth. After returning to Qingzhou, the girl gradually recovered.

Speaking of it, Xiao Ming also likes to eat smoked pig's knuckles, but this dish is not available in Dayu State. He taught Pa Ding to make them carefully. This Qian Dafu has become addicted since he ate it for the first time. See When the pig's feet are smoked, it drools.

(To be continued.) Enable new URL