Li Tiantian and Shen Wanbao lost tens of thousands of taels of silver in the flying rocket project, and a bunch of flying rockets could not be sold, and they were grief-stricken, crying for their father and mother.

Suddenly, when they heard Xiang Tiange say that Xiao Duhou had a way to save them, the two of them immediately turned their sadness into joy, and immediately went to Chu Tianxiu to ask for advice.

Chu Tianxiu gave the two of them a move.

He himself is now working on powder guns and heavy artillery, two super-large military weapons projects. I didn't have time to do those little researches, just let the two of them do it.

"This gunpowder has a wide range of uses, both military and civilian.

For civilian use, matches, fireworks, and firecrackers can be made. Matches, that is, the stove is used to light the fire, which is much more convenient than flint.

Fireworks, which are miniature small rockets, can fly into the sky with a swish, explode, and the sky is full of fire, which is very beautiful.

There is a great demand for these two things among the people. Don't be too expensive, sell a few copper plates, make a small profit, sell it to the whole Dachu, and you can make a lot of money in a year.

Li Lao Immortal did not have the way of the imperial court, so he took the invention of civilian gunpowder.

For the military, rockets can be developed. It's not the kind of large flying rocket that can sit on people, but a small rocket like an arrow. The technical difficulty is low, the use is greater, and the farther you shoot, the better! It's best to be able to explode and kill enemies.

Shen Wanbao is close to the royal family and can develop this kind of munition.

Moreover, fireworks, firecrackers and rockets have the same gunpowder technology, but the materials for making rockets are different, and you can work together to develop technology and share technology. ”

Chu Tianxiu casually thought of a few small ideas.

Selling matches, which is a civilian necessity, can earn a lot of copper money from this alone. Mass production, one or two copper plates, must be willing to spend money.

Fireworks, firecrackers, small rockets.

It's pretty much the same as a flying rocket.

The Flying Immortal Rocket that sits on people is too high-end, and the price is ridiculously expensive...... If the step is too big, it will definitely pull the egg.

Or small rockets are easy to sell.

Fireworks are used to enjoy, and they are even more popular during the New Year's holidays, and the sales are definitely good.

"This firework is for watching?!"

"Little Dusk Hou, just to watch the fireworks explode in the sky, some people are willing to buy it?... How do you listen to it, it feels very unreliable!"

Li Tiantian and Shen Wanbao were a little stunned when they heard it.

Just to see and listen to a sound, which fool is willing to spend money?

Fireworks, as it sounds, are even more unreliable than their flying rocket project.

It's more interesting to sit on a flying rocket and fly into the sky yourself.

At the very least, I went up to sit down and passed a flying hidden.

This fireworks!

Launched into the sky, there was a bang.

Isn't this burning and playing, what's the difference between this and burning money?

Li Tiantian and Shen Wanbao were confused.

"Matches, fireworks, firecrackers, small rockets, the price can't be high, it must be controlled between one and ten copper plates, you just have to do it. If you can't make any money, just come to me. ”

Chu Tianxiu said with a smile.

The technical requirements of these items are not high, and they can be made under the current conditions. A few more research companies on gunpowder can also promote the progress of gunpowder technology.

"How do you make matches?"

"Use a small wooden stick and stick gunpowder and sulfur on one end. Then a box with matches, the box is coated with red phosphorus. As soon as you rub it, you will light a match. Anyway, it is as convenient as possible for people to use, and there is no need to beat the flint for half a day to make a fire. You go back and experiment a little more. ”

"What about the fireworks?"

"Fireworks are a bit more complicated, you need to wrap the gunpowder in bad paper and add a fuse. In addition, various metal powders are added to the gunpowder, and when it is burned by the fire, it will explode into different colors. At night, there are colorful lights in the sky. It's up to you to keep trying different recipes. ”

Li Tiantian and Shen Wanbao were shocked for a while, full of doubts, and immediately went back to study these things.

The cost should be as low as possible, and the quality should be as good as possible.

If you want to make matches and fireworks, you also need a certain amount of technology.

Whether these things can be sold for money, they are not sure.

……

After the two of them left.

Chu Tianxiu continued in Yu Garden, using carpenter's tools to tinker with the model of the bronze cannon—first using wood to make the cannon's pipes and shelves look like they.

Small-caliber light artillery suitable for field marches.

The carriage could hold a mobile vehicle-mounted artillery that walked.

Thousands of pounds of artillery defending the city!

He was all about forging cannons.

On the surface, the three major civil engineering infrastructure of Jinling City seem to be just civil engineering.

But in reality, it's all steel, and a lot of it.

Such a market in front of us will greatly promote the explosion and upgrading of the steelmaking industry in Danyang County.

The gunpowder gun has already been developed in Danyang County, and the production process has been repeatedly tested and improved.

Of course, a cannon that is more powerful than a powder gun can also be invented.

With the current technology, it is still an extremely difficult task to manufacture iron and steel barrels weighing thousands of pounds.

Because the ancient one-time "watering" molding cannon technology is not up to standard, heavy artillery cannot be repeatedly hammered like a sword, and there are many sand holes inside, and the iron cannon is easy to explode and crack.

The steel process in Danyang County can only make steel musket barrels, and it is still extremely difficult to make steel cannons.

Bronze, it's relatively easy.

Bronze has a low melting point, and the pouring technology is much more mature.

Later generations, even at the end of the Qing Dynasty, were still using various bronze cannons.

Of course, the bronze cannon also has a weakness, that is, after repeated firing, it will cause the barrel to become soft or even deformed at high temperatures.

The temperature at the time of the explosion of the gunpowder was too high, and the bronze cannon could not withstand the repeated firing.

Moreover, a thousand-pound bronze cannon is estimated to cost nearly 1,000 taels of silver, which is extremely expensive.

In the end, it is necessary to build a steel cannon, which is cheap, strong, and the most durable.

Prince Xiang Tiange was obviously very interested in these behemoths that could only be pulled by horse-drawn carriages.

……

"Disciple, Zhuang Qingdi begs to see!"

The young master of the East Palace, Zhuang underestimated the enemy, stood outside the gate of Yuyuan, and bowed down to see him.

In the military academy, he worshipped Xiao Duhou as a teacher in public, and from then on, of course, he had to call Xiao Duhou a teacher.

However, he was still unconvinced, and wanted to find fault with "Romance of the Three Kingdoms" to prove that he was not a mediocre person.

"Come in!"

Chu Tianxiu was bending down to dig wood, stood up, and said lightly, "What, what's the matter?"

The young master of the East Palace entered Yu Garden, and only then did he see that the crown prince Xiang Tiange was also on the side, and he couldn't help but be stunned, and his face turned red.

"I've seen the young master!"

Xiang Tiange was taken aback and hurriedly saluted.

"Well, how is the prince's studies?...... Forget it, let's go back to the East Palace. There is something else to do today for the teacher!"

Zhuang Qingdi nodded lightly, and wanted to lecture Xiang Tiange with his hands behind his back, but suddenly remembered that this was Yu Garden, which was not suitable.

He bowed his hand to Xiao Duhou and said, "The disciple has been studying hard recently, carefully studying the "Romance of the Three Kingdoms", the battle of Chibi, and seeing Zhuge Liang ascending the altar and borrowing the god of the east wind.

This method seems to be quite similar to Moling County's move to ask Dong Xianliang for rain at the altar, and the theory of yin and yang disasters.

However, you have clearly criticized this doctrine and said that it is a fallacious doctrine.

Why did a generation of military Zhuge Liang use this yin and yang method in the book?

You didn't let Dong Xianliang use this method, but you used this method in the book. Isn't that a paradox?

The disciple was puzzled. ”

Zhuang Qingdi's face was full of pride, he only studied for a few days, and then found a fatal point in "Romance of the Three Kingdoms". It can be seen that his level is also leveraged!

Chu Tianxiu couldn't help but be surprised when he heard this.

This Zhuang light enemy can actually notice such small details, it seems that he is really reading "Romance of the Three Kingdoms" hard, trying to find fault with it.

"The doctrine of soldiers is divided into four major schools. Soldiers' power and strategy, soldiers' situation, soldiers' skills, and soldiers' yin and yang.

Among them, the soldier Yin and Yang is the best at the theory of Yin and Yang.

Zhuge Liang is a military advisor of the Yin and Yang family, and it is natural to understand the art of Yin and Yang and the law of weather changes.

He was not calling for the wind and rain, but he was just watching the wind that was about to rise, and he went up to the altar to ask for the wind before the wind rose, and he played tricks on the enemy, and deceived the people, and made the enemy frightened and afraid.

This kind of fallacious theory cannot be used to tell one's own people. But it's perfectly fine to confuse the enemy. The yin and yang of the soldier is to confuse the enemy and win from it.

As for Dong Xianliang's theory of yin and yang disasters, he used it to deceive his own people, of course, he must be criticized fiercely. ”

"Yin and Yang, confuse the enemy?"

Zhuang Qingdi was stunned for a long time.

He only looked at the benevolence, righteousness and morality of Confucianism, and clearly debated right and wrong.

But he lacked understanding of the doctrine of the soldiers, and he didn't expect the soldiers to love to use the method of yin and yang, so he couldn't help but be ashamed, and turned around and left, "Thank you teacher for solving your doubts, and the disciple will go back to read the book of soldiers!"

Xiang Tiange couldn't help but admire, the young Fu Zhuang's light enemies in front of him were all big and reasonable, and he was completely confused when he met Xiao Duhou.

The same is yin and yang, which Confucianism can't use, but soldiers do.

Chu Tianxiu shook his head helplessly.

Nerds are nerds, addicted to books and can't extricate themselves, holding on to every detail in the book, they have to dig three feet into the ground and dig out the profound meaning!

By the time Zhuang Qingdi studied and understood the contents of the book, the outside world would have changed a long time ago.