Zhu Biao sat in the tent with the exploded fragments and thought repeatedly. Before attacking Gansu, he gave the drawings of the Folang machine to Liu Bowen and the craftsmen of the Military Weapon Bureau who accompanied the army.

During the Ming Dynasty, there were two types of firearms that were mainly used, namely Franchise and Red Cannon.

The Fran machine cannons used in field battles in history have been reduced in use due to the manufacturing process level of the Ming Dynasty.

In addition to being bulky, the fire accuracy of the musket is very poor, and only the heavy red cannon is still usable.

It has a large load capacity, and it will be a large area when it is mounted on the city wall. It does not require frequent transportation. It is more suitable for defending the city.

It is necessary to change the main reason why the Ming Dynasty was good at defending the city but short of field battles in history.

The number of Francs is higher and the shooting accuracy of muskets is higher, so they will not lose to the Qing Dynasty in the later field battles.

Zhu Biao was a little nervous. Can the craftsmen of the military weapons bureau who were with the army be made?

These craftsmen with a foundation in firearms have really not very good cultural level, which is also a headache for Zhu Biao.

Today, craftsmen, and the vast majority of those who make firearms are illiterate craftsmen.

There are a few who can recognize words but have no scientific knowledge at all.

Zhu Biao has thought deeply about this issue.

To make a good firearm, you have to face some problems that must be faced.

He sat there writing and painting, but Xu Miaowei didn't bother her, but just put down the food and went out immediately.

The food is cold.

Very hot.

It's cold.

Continue to heat up.

"Come." Zhu Biao shouted.

"Your Highness, Prince." Li Dabangzi immediately came in and said, "Your Highness, please give me instructions."

"Go and invite Mr. Liu, General Xu and the others." Zhu Biao said in a desperate attempt.

"Yes, Your Highness, Prince." Li Dabangzi immediately went to invite him.

A moment later, Xu Da and the others rushed to the tent and said, "Your Highness the Crown Prince."

"Uncle Xu, Mr. Liu, I have some ideas about firearms and want to talk to you." Zhu Biao took a stack of paper in his hand and gave it to Xu Da and Liu Bowen.

"Is this?" Although Xu Da knew the words above, he did not understand some things.

"About firearms, the craftsmen of the military weapons bureau who accompanied the army should understand some basic rules for gunpowder launch and explosion. We should accurately determine the content of nitrate and sulfur in the gunpowder.

It is best to have a record to determine how far the range is based on the amount of gunpowder installed, and to be able to know the effective amount of gunpowder."

Zhu Biao explained it in words Xu Da and Liu Bowen and others could understand.

In the present, when making firearms, you must understand some chemical principles. If you don’t know the chemical reaction principles of gunpowder emission and explosion, you cannot accurately identify the content of nitrate and sulfur in gunpowder.

There is no data on how much gunpowder is loaded, because the quality of gunpowder is uneven due to different times.

Its effective ingredients cannot be guaranteed. The same amount of gunpowder may not be far away when it is loaded for the first time. The next batch of gunpowder is the same in quantity, but it may explode.

They do not understand the concept of parabolic motion of objects, nor do they know the movement trajectory of these shells flying, so they will not have an accurate shooting theory.

The so-called hit is all based on their feelings, and most of them are just playing around.

Metallurgical theory knowledge, don’t know the reasonable smelting process.

Xu Da and Liu Bowen listened to what Zhu Biao said, half-understanding and half-doing.

It sounds right, but I can't figure it out even after thinking about it.

"Did Uncle Xu hear some habits of sword-casting masters? It's very cruel." Zhu Biao asked.

Xu Da shook his head.

"Report to your highness, I know something." Liu Bowen touched his beard and said, "I heard that at the end of the Yuan Dynasty, a general of the Yuan Dynasty fought with the local rebels and retreated many times. Even his Mongolian sword was taken away by the rebels.

He looked for a knife caster, and someone suggested to the general that he could make a good knife by offering sacrifices to the beauty.

Some old blacksmiths used the beauties snatched by the Yuan people into the furnace and could make good steel and create swords."

After Liu Bowen said that, he looked at Zhu Biao.

"Absurd, too ridiculous." Xu Da stood up and shook his head and said, "Whose girl is redundant, so cruel."

"These things are very harmful." Zhu Biao shook his head.

It is precisely because of this backward tradition that even if the iron is refined, the strength of some iron cannot be guaranteed at all.

"Just like a cannon, a cannon of the same thickness may not have any problems this time, and the barrel will explode next time, and the same is true for the musket." Zhu Biao said.

"Your Highness, in order to ensure that everything is foolproof, we can use copper." Liu Bowen said.

"Yes, your highness, use copper." Xu Da said.

"It's OK to use copper, but this copper cannot meet the amount we need." Zhu Biao said: "These can only be discussed after returning to the court."

Xu Da slapped the table and said, "I remembered that I went to inspect a few days ago. A craftsman said that it could increase the thickness of the iron to prevent the blow-off."

"If it is not appropriate, it will increase the weight." Zhu Biao shook his head.

If you are afraid of blowing up the chamber, you will continue to increase the thickness. Thickening will cause the gun to be very heavy. If you cannot make a war artillery like the Franc, it will reduce your combat capability.

Zhu Biao walked to the table, wrote down all the discussions just now, and handed them to Xu Da.

"Firemakers should have uniform standards in terms of size, shape, weight and surface roughness."

"The firing angle and outlet speed of this gun?" Xu Da pointed to the next one.

"This is how it is..." Zhu Biao used the influence of the popularization of words they could understand.

"There are also craftsmen who must be trained to guide and use firearms and cannons correctly. They cannot rely on personal experience or feelings." Zhu Biao reminded.

Xu Da sat next to him and said, "I still remember the Ming military academy that His Highness the Crown Prince said before the expedition. Now I think it is very necessary."

"That is, we have seen the power of firearms. If we develop it, there will be no resistance." Liu Bowen said: "The power of firearms and cannons is the five elements and eight trigrams, and the theory of Yin and Yang must be three points."

"Mr. Liu, you still need to supervise the Military Equipment Bureau. We will continue to discuss improvements in the past few days and make a booklet."

"Yes, Your Highness, the Crown Prince." Liu Bowen said.

...

Nanjing City thousands of miles away.

The Qianqing Palace was brightly lit.

Lao Zhu wrote there with a pen and then hooked it up: "We still think it's inappropriate."

"Yu Yi, you go out first." Empress Ma asked the eunuchs and palace maids to leave the Qianqing Palace, and then walked up to him.

Seeing the outlined above, Queen Ma pointed and said, "When you were fighting, I read history books there every day. In fact, Biao'er was right, our salary was lower."

Lao Zhu didn't say anything.

Last time, the Minister of the Ministry of Revenue reminded Lao Zhu that he suggested the issue of salary.

Lao Zhu directly asked someone to drag him out of Fengtian Palace. After being hit by more than a dozen sticks, he also had a strong force and could not get out of bed while lying at home for half a month.

He felt that this group of officials wanted to embezzle.

Tonight, Empress Ma knew that he was going to talk about his salary, so she let Yu Yi and the others go out.

In case you hear what you shouldn't have heard, Your Majesty's donkey has a temper and beats people again.

"Have you been low?" Lao Zhu pointed at the numbers that were hooked off.

"Zhongba, isn't it low? How can you live a good life with such a salary?" Queen Ma glanced at him and took the pen: "Biao'er had calculated a small account for me before, and I'll calculate it for you."

"What's the account?" Lao Zhu said.

"When the country was founded, I bought two stones of rice for one tael of silver. This year, the price of grain has risen..."
Chapter completed!