A few days later.

Li Gan summoned all the princes at the Temple of Heaven in front of the Taiji Palace, and the reason was that Li Huai entrusted a batch of gifts from the four princes to pay tribute.

"Father, please see, this is called a telescope, through this object, you can see a few times more distance, you just need to pull this place apart, and then put it in front of you."

The fourth prince tried his best to show off in front of his brothers, he may not have done this to curry favor with Li Gan, but there must have been an element of deliberately angering them.

"Let's try...... Don't say it, it's really far away, you see, there's a bird in that tree. ”

Li Qian played with it for a while and noticed a string of numbers on it, "What does this zero zero qi mean?" ”

"This ...... Unimportant. The fourth prince smiled and vaguely passed, and took out another tribute.

"Father, you see, the name of this slap thing refers to the north arrow, no matter how you put it, this red pointer will always point to the north."

"It's amazing."

"There is also this bag of concrete, as long as it is mixed with water, after drying, it will be as hard as a stubborn stone, and Liangzhou Longxi City is built with this thing."

"Hmm."

"Father, please see, there is still this thing." The fourth prince lifted a piece of red cloth and leaked a cannon underneath.

Compared with traditional cannons, the barrel is much smaller and shorter, and the weight is naturally lighter.

But it was no worse than the kind of cannon they used.

"Father, you see, there are two roulette wheels on both sides of this cannon, turn the one on the left, the barrel can be adjusted to the height, and turn the one on the right, the barrel can be adjusted to the left and right."

Li Gan personally walked in front of the cannon, and he had dealt with this thing for most of his life.

I didn't think it could be like this.

There are also four words engraved on the barrel: Shenwei Cannon!

"Father, there are many strange things, all of which are practical things." The four princes introduced Li Gan one by one.

The third prince, Li Chengji, couldn't help but snort coldly, and muttered in a low voice: "What is he angry, these things were not made by him." ”

"The fourth child wants to tell us that the eldest nephew is on his side." The second prince, Li Jirong, tilted his head and said.

"I don't think so, the eldest nephew wants to use the fourth child to help him say something useful to him in front of his father." Li Chengji said in a deep voice.

Li Jirong also sneered, "The fourth child was used as a gun, and he didn't know it, which is also pitiful." ”

They all smiled in unison.

Only the fifth prince, Li Xingye, deliberately found a relatively clean place, distanced himself from everyone, and was silent.

Half will.

The four princes have finally finished their introduction.

If you take out two of the things here, you can be amazed, but after Li Gan read it, his expression was still the same.

He didn't pretend, but because he had fought so many years of war and been an emperor for 19 years.

Nothing surprised him anymore.

"How much is a Shenwei cannon, does he have an explanation?" Li Qian asked first.

The fourth prince was stunned, "He still needs money?" ”

Aren't these honors for his imperial grandfather?

Hehe!

Li Qian smiled, "Fourth, you are too ill-informed, the new steel used by the imperial court now is all bought from him, real money, and he will not suffer a loss." ”

"That'...... Erchen turned around and asked. The fourth prince touched the back of his head awkwardly, always giving people a very honest feeling.

"You don't have to ask, since he doesn't offer a price, it proves that he doesn't want to sell this thing, how can a grandfather ask for a grandson." Li Qian waved his hand.

This time he was wrong.

Li Huai really didn't want to sell the Shenwei cannon, but they could completely copy this thing, maybe the gear turntable was a little difficult.

However, a cannon without turntable gears can also be fired, and if you want to raise the elevation angle, you can add a tripod.

Li Huai struggled for a long time in his heart before sending the Shenwei cannon to Luoyang, thinking that this thing might be able to help Yu Guo resist the Northern Wilderness.

He gritted his teeth, but he still sent it!

The biggest difference between the Kamui cannon and the traditional cannon is that it is small and lightweight, which means that it is easier to transport, and it is not limited to the plains, the cannon can be removed from the wheels and carried to the mountain by two people.

Because the traditional gunpowder and firing method are still used, it has the same drawbacks as the old cannons.

It cannot be used in rainy weather.

"Do you know why he sent these things?" Li Gan looked at his sons and asked.

Everyone shook their heads.

"Please make it clear to my father."

"He just wants us to know that these things are useful to Yu Guo, so that we can let him sell them."

After Li Gan finished speaking, he glared at the four princes, this guy is an accomplice.

Lee Seung-gi and Lee Gil-young glanced at each other, and both leaked an unspoken sarcastic smile.

"But how can we let him get his wish, if he really wants to let him sell, he won't have to earn all the money in the world." Li Qian said with a smile.

"Father, since it is beneficial to the country, why not discuss with Li Huai, there is always a suitable way, which can be beneficial to the country and the people." The fourth prince said stubbornly.

If he wants to continue to maintain a relationship with Li Huai, he must help Li Huai get certain benefits at this moment.

He couldn't help at all.

Li Huai will think that he is useless, and he will not contact him again.

Li Gan pointed at the fourth prince with his index finger, "In the whole capital, you help that kid say good things, do you really think he needs it?" ”

His gaze swept over his sons again.

"I can despise him, scold him, despise him, and rebuke him, because I can hold him."

"How many of you...... No way! ”

Li Gan called his sons this time, not because of Li Huai's gifts, but because he wanted to take this opportunity to educate them.

"If any of you have any dissatisfaction in your heart, speak out!" Li Qian said in a deep voice.

The third prince, Li Chengji, was the first to disagree.

"Dad, he's going to do weird things, and that doesn't prove that he's better than us."

"What are you referring to?" Li Qian asked.

"At least I won't obey him in the war." Li Chengji raised his head and said.

Li Qian sneered, "He just formed a Liang army of more than 100,000 people, you shouldn't know it." ”

"I have 200,000!"

"You have a fart, half of your personal guards are still given to you by us, and the 200,000 people are also guarded by us for you, in addition to these, how many soldiers do you have?"

Li Gan scolded mercilessly.

"At least...... I've been on the battlefield, I've fought with the Northern Wilderness with real swords, and he hasn't even seen what war is like. Lee Seung-gi argued with his neck flushed.

"Hey!"

Li Gan looked disgusted, stretched his neck and asked him, "You have fought, how many times have you won battles?" When have you not been chased by someone? Do you have more fights than his father? ”

moved the prince out, and Li Chengji couldn't say anything, but he just had a breath.

"I ...... I'm not convinced! ”

Li Gan let him go, and turned his head to look at Li Jirong, "Second brother, you have the help of sages, and you have made a lot of money recently." ”

He could have made the word 'sage' a little heavier, which was to remind him that he already knew this person.

It's best to be careful.

Li Jirong was not as straight as the third child, and he shrunk his neck and said: "I made a little bit, but it is indeed not as much as the eldest nephew." ”

"Your little bit is still picked from your eldest nephew, his goods have to pass through the Guanzhong, as soon as you stretch out your hand, you will drip oil when you take it out!" Li Gan said disdainfully, he can't see this kind of stealing chickens and touching dogs.

Li Jirong was not calm immediately, "That kid secretly sued again, what is the matter, he can't say it directly, he has to play yin." ”

"Sue?"

Li Gan's eyes narrowed, "Do you need him to sue?" Guanzhong is mine, not yours, what is Guanzhong, what do we not know? ”

"Besides, even if he sues, that person is justified, you stole someone else's, and you have to beat a rake, what do you say you look like, do you still have the appearance of being a second uncle?"

"I ...... I can make money myself! Li Jirong was also scolded and had nothing to say, and finally said a hard word.

Li Gan's gaze stayed on the fifth prince Li Xingye for a while, and without saying a word, he directly swept over the rest of the princes, and finally landed on the fourth prince.

"Erchen is indeed deficient, work hard to learn from the eldest nephew!" The fourth prince hurriedly said that if he admitted that he was insufficient, he didn't need to be scolded.

Li Gan didn't say anything to him.

"Cut!"

Li Jirong and Li Chengji snorted at the same time and glanced at the four princes with disdain.

"It's all gone, the fifth one stays."

"Son's farewell!"

After all the princes left.

"Send the Shenwei cannon to the Ordnance Division, give them three months, and you must copy it for me!" Li Qian said in a deep voice, still a little angry.

He was angry that Li Huai told him that there was such a cannon, but he didn't tell him how to make it, and he didn't even sell it to him.

"Dad, you wait first."

Li Xingye squatted beside the cannon, knocked, and leaned on it again to listen, but put his hand into the barrel.

"There are words...... No, it's not like a word, it should be a picture, engraved in the barrel. Li Xingye felt the traces by the touch of his fingers.

The pattern on the inside of the barrel was drawn.

"Dad, look, this seems to be the blueprint of the Shenwei cannon." Li Xingye brought the drawn picture to Li Gan.

Li Gan took it and looked at it, it was indeed the design of the cannon, and he knew that Li Huai was to blame, "Why did he make such trouble?" ”

"Dad, from Liangzhou to Luoyang, the road is far away, such a big cannon, you can't hide it." Li Xingye explained.

This must have been done for the sake of secrecy, and perhaps someone would have checked the barrel, but it would have been unexpected, and the blueprints were engraved on the barrel.

Even if someone notices that there are engravings in the barrel, they can't be touched clearly for a short time, and if they are touched for a long time, it must be suspicious.

Li Qian took a closer look at the design drawing, and the structure of the Shenwei cannon was so simple, which meant that it was easy to copy.

It is indeed easy to leak secrets, and Li Huai has no problem doing so.

"You re-establish an ordnance department to specialize in the production of this kind of cannon, and you must keep it absolutely secret!" Li Gan gave him a piece of gold.

"Yes!"

Li Xingye arched his hand and took the cannon away.

Because of the cannon, Li Qian allowed Li Huai's Qinglong Chamber of Commerce to open a concrete factory in a limited area.

It is also available in limited areas.

At the same time, some policies are relaxed.

"There are people in the court who are really effective." Li Huai thought that the fourth uncle had said good things and it had an effect.

When he opened the map and saw the areas where concrete was allowed to be sold, his face changed slightly.

Nearby are all the traffic arteries of Yuguo.

It is equivalent to saying that he is producing concrete for the Ministry of Industry of the Imperial Court.

Never mind.

The money of the imperial court is also money, and it should be earned or earned, just to earn a little less.

In fact.

Every piece of goods created by Li Huai, every cent of value, was put in the most favorable position for Yu Guo by Li Gan.

Beyond a certain range, Li Qianshen intervened and restricted it unconsciously.

Plainly.

Li Huai has just been helping Li Gan work for the past two years!

Able to work for the emperor.

It's also an ability in itself!