Li Chengqian arrived at the weapons research institute very quickly, and when he first arrived there, Li Kai hurriedly greeted him.

His expression was agitated, making him slurred a little.

Strange things kept coming out of his mouth.

Li Chengqian couldn't understand what he was talking about.

"Li Kai, you speak slowly, this king really doesn't understand what you say?"

Li Kai eased up for a while, then took a deep breath and said, "Your Royal Highness the Prince, that cannon was built by us, and it was tested, and the results have also come out!" It's very powerful! It's really shocking! That's great......

Datang will be even stronger! I have never seen anything so powerful, and His Royal Highness the Crown Prince is really a great talent......

No one could have imagined that a small cannon could have such a huge destructive power............

The cannon is as powerful as ......"

Li Kai chattered endlessly, and he had repeated it many times just about the power of the cannon.

Of course, this is also normal, if it were an ordinary person, he would have fainted with excitement.

"Alright, don't say it!"

Li Kai stopped at this time, but he couldn't stop his excitement.

Shortness of breath is very fast.

Li Chengqian was also excited, and he said: "Take this king to see!" ”

"Yes, yes, yes!"

Li Kai walked ahead and led Li Chengqian to a clearing, which was very large, 500 meters wide and 2 kilometers long, and there was a big iron cylinder on the short side.

Li Chengqian stepped forward and was about to touch the barrel of the cannon, but was stopped.

"Your Royal Highness the Prince, wait, this cannon has been tested many times just now, and it's still a little hot. Don't touch it! ”

Looking at the white smoke still emitting from the cannon, you can see that it is still bombarding just now.

Li Chengqian stopped his movements and took a closer look at the cannon.

This is a cannon based on the Hongyi cannon.

The Hongyi cannon was originally a naval cannon manufactured in Europe around 1600, and was introduced to China in the late Ming Dynasty, and was later collectively called the Hongyi cannon.

The Hongyi cannon has many advantages in design, the barrel is long, the wall is thick, the caliber is large, and the overall shape is gradually thickened from the muzzle to the tail, which is in line with the principle of high to low bore pressure when gunpowder is burned. There are cylindrical lugs on both sides of the center of gravity of the gun body, and the gun can adjust the firing angle with this axis and change the firing range according to the amount of gunpowder; It is equipped with a crosshair and a light gate, and the trajectory is calculated according to the parabola, which is very accurate.

Its length is about three meters, its diameter is about ten centimeters, and its weight is more than one ton. Hongyi cannon is mainly made of copper and iron, although it is not easy to explode, not easy to appear pores, and even has a long life.

Li Chengqian was thinking, and Li Kai brought a cannonball at this time.

The shells were very heavy, and it looked like they should weigh a dozen pounds.

"This cannon uses a lot of our copper and iron, and if we want to produce it in large quantities, I'm afraid we will use even more copper! This is a cannonball, and it can be shot up to ten miles away, and we have a limited space here, and we can only provide four miles of walls. ”

Following the direction pointed by Li Kai, Li Chengqian saw the wall in the distance, which was full of devastation, all traces of cannon bombardment.

"You don't have to worry too much about copper, the king's monetary policy will be accelerated, and the copper coins will be discarded as soon as possible, and the decorative copper coins will be converted into materials for my cannon."

Li Chengqian said that the lack of copper is indeed nothing, as long as there are copper coins.

Paper money replaced copper coins, and he would collect all of them and use them to make cannons. In addition, for some mineral matters, he will also step up mining efforts to ensure sufficient supply.

"Yes! Does His Royal Highness the Crown Prince want to see how powerful it is? ”

Li Kai had already brought the cannonball to Li Chengqian.

"Let's see how the power goes!"

Although Li Kai said a lot, the real situation has not yet been verified, so Li Chengqian also wants to take a look, and he can pretend to be forced for a while.

"Yes!"

And then, everybody got busy.

"You guys, gunpowder!"

Li Kai gave an order, and the people below began to load gunpowder, compacted it with something, and finally put cannonballs.

When everything was ready, Li Kai said: "His Royal Highness the Prince, please move to the rear!" ”

"Huh? Good! ”

Then Li Kai took Li Chengqian to a little behind.

Because the cannon is fired at a moment, the power is huge, and if you get too close, you may damage the eardrum. caused irreversible damage, in that case, the gains outweighed the losses, which is the same reason that Li Chengqian asked everyone to cover their ears at that time.

When everything was ready, Li Kai shouted, "Open the cannon!" ”

Someone lit the fuse, followed by a sizzling sound.

Rumble......

A loud bang was followed by a muffled sound in the sky, and white smoke rose in the distance.

All this was in Li Chengqian's eyes, a small mound of dirt was shattered.

It's really exciting to see such a shocking scene.

"Good! Good job, Li Kai, you have made another great achievement! ”

Li Chengqian's interest is very high, this Li Kai is really a genius, and it is still not a problem to create these things.

Li Kai hurriedly stepped forward and said, "This is the prince's guidance!" The villain just does what you want. ”

Having said that, not everyone can do this, and this Li Kai is still a very talented existence.

"Hahaha! It's a reward! This king will reward you with a hundred taels of gold! ”

"Thank you, Your Highness the Crown Prince!"

As soon as Li Kai's words fell, the system came to prompt.

Congratulations on completing the Invention Cannon quest and rewarding 200,000 points.

Start task 5: Build 10,000 cannons in half a year! 400,000 points will be awarded. When the time comes, the task is not completed, and the calculation will be re-cleared! After clearing zero, the reward for the second mission is reduced to 1 in 10, and so on, until the reward disappears and the mission begins!

Half a year is very relaxed, and for Li Chengqian, maybe it will be completed in three months.

He fell into deep thought, and Li Kai said at this time:

"I wonder what His Royal Highness the Crown Prince is going to name this cannon? I'm going to have people carve it into the cannon! ”

"Huh? Let's call it Zhenguan Cannon, you can engrave it now! ”

"Zhenguan God Cannon, good name!"

The name is just a pronoun name, and you can call it whatever you want, but some rulers may be more concerned.

As for what to call it, it is best to name it by the name of the year.

After all, this thing was produced during the Zhenguan period, and it is called the Zhenguan God Cannon, which is not wrong.

"Also, Guan Lux went and asked His Majesty to come and see!".

So everything doesn't wait for Li Shimin to come and see, he has to talk to Li Shimin again, produce more cannons, when the cannons are produced, it will be the Ming of the Tang Dynasty's expansion, what Turkic, what Tubo, Goguryeo? Who does not cry out at his feet?

"Yes! His Royal Highness the Prince! ”