Li Shimin's will: Li Zhi, the throne belongs to your brother

Chapter 127

"Good stuff!!" Listening to Li Chunfeng's explanation, Li Shimin was very satisfied: "Okay, after I have tried it, I will reward it myself."

As soon as the conversation changed, Li Shimin looked at the wooden boxes carried by several disciples and asked, "Are they carrying gun cotton? How is gun cotton made?"

"The so-called gun cotton is an explosive made by adding nitric acid to cotton or hemp.

Speaking of this, Li Chunfeng sighed a little: "It's a pity that I don't find much cotton. I used up all of it during the experiment. Now I use hemp."

"Cotton?" Li Shimin was very surprised when he heard that, he never thought that cotton could be used as explosives, and now there was another reason to get cotton.

Li Tai was incomparably surprised when he listened from the side. This gun cotton has no smoke, and there is no residue when it burns. Why does this kind of characteristic sound like smokeless explosives?

In the shotgun section, black|gun|powder is used. After firing, the barrel should be cleaned with an iron rod, otherwise it will easily explode.

Smokeless|Gunpowder is the granular gunpowder of the Yangtze River in modern pistol bullets. It burns relatively without residue and smokeless, which can greatly extend the service life of the barrel.

Hearing this, Li Shimin smiled: "It's okay, there are hundreds of catties of cotton in my warehouse."

The cotton I sent people to grab from Gaochang last time is still there, so it's not just a good time to use it, it's wonderful! !

Thinking of this, he turned to the Imperial Forest Army and said, "Tell me the order to deliver all the cotton in the warehouse."

"Yes!" The Imperial Forest Army turned and walked back.

"In the future! If you need something important, such as copper, just make a list. I will definitely get some from my warehouse, and even if I don't have any, I will try my best to get them."

Li Shimin said to Li Chunfeng earnestly.

"Yes!" Li Chunfeng quickly saluted and heaved a sigh of relief.

After Li Shimin finished speaking, his face was a little sad.

The cannon weighed three hundred catties and was all made of copper and iron. The shells had to be made of iron, and even the gunpowder had to be made of cotton.

This cost~ this cost is too high!

Although I have iron and copper smelting furnaces, I am not afraid of it.

But even if you have money, you can't buy this cotton... one of the few is a hundred catties stolen, which is very uncomfortable! !

This is not a cannon, this is simply a gold swallowing beast.

Thinking of this, Li Shimin's face is not so beautiful.

Let's see how powerful this cannon is, and then ask if we can research cheaper cannons.

Otherwise, let alone a small treasury, I am afraid that the national treasury will not be able to support it.

"Where did you get so much copper?"

"It was made by melting the alchemy furnace of the disciple's former Taoist temple, and it can be regarded as making the best use of everything!" Li Chunfeng looked emotional, as if thinking of something.

Alchemy Furnace...

Soon, a group of people pushed all the supplies and the like near the river while talking.

Li Tai glanced at it, and there was only a wooden and sandbag piled up protective wall here, which was obviously left over from before.

The terrain here is flat, empty and uninhabited. It is perfect for testing artillery! !

Li Chunfeng pointed to the distance, "Your Majesty, please take out the clairvoyance. In the distance, we have built several target walls, all of which are built according to the thickness of the city wall!"

If you don't remind him, Li Tai hasn't noticed this distance yet, so he pointed in the direction and looked in the direction, only to see a very short wall.

"Oh, is that so? I want to take a good look." Li Shimin took out the binoculars from his sleeve and looked into the distance.

"Indeed, I can see clearly that several walls have collapsed, and there are still many potholes..." Li Shimin described the scene while watching with one eye closed.

The others could only watch helplessly.

Li Tai was quite speechless, you, Li Er, sent us a few for us to see! !

"Then how can I fire the cannon?" After reading it, Li Shimin turned his head to meet a group of anxious eyes, and immediately understood what was going on.

Turning his head to the Imperial Forest Army behind him, he said, "Distribute clairvoyance to everyone."

"Yes!" Soon, the Royal Forest Army handed out the binoculars to several people.

Li Tai couldn't wait any longer. He took a heavy monocular and put it in front of his eyes to adjust it carefully.

The picture in front of me soon became clear, but compared with the modern one, there are still very small scratches on the edge. Except for this small flaw, the other feelings are no different.

Following the direction Li Chunfeng pointed just now, Li Tai could clearly see the bomb crater and the two-meter-high city wall.

On the other side, several people were lifting the cannon off the cart.

Li Chunfeng took a look through the binoculars, skillfully took out a compass full of numbers from his sleeve, corrected the direction, and reported a series of numbers.

"The angle is 45, the direction is positive 96°, and the distance is 1000 meters and 300 meters..."

"receive."

Yang Siqi fixed the base with a shovel, while Yuan Keshi and Zhang Yajiu each lifted a bracket to move and adjust the angle.

"Are you ready?" The two people carrying the stand turned their heads and asked Li Chunfeng.

"Okay!!" Li Chunfeng gestured with his fingers, and then looked at the compass, feeling that it was almost done.

"This is?" Li Shimin looked at the two people carrying the bracket, and then at Li Chunfeng who was holding the compass and asked curiously.

"I understand this angle, but how does this direction and distance reach directly?"

Looking at the curious Li Shimin, Li Chunfeng pondered for a while, and then replied: "Er... this matter is complicated. If you are proficient in mathematics, you can calculate the angle and aim at the place more accurately."

Regardless of wind speed and the like, the trajectory of the shell in the air can be regarded as an upward parabola, and the approximate landing point can be obtained by knowing the initial velocity and angle.

"Proficient in mathematics?" Thinking of this, Li Shimin was a little discouraged, why is it mathematics again... I have to take a good look at mathematics when I go back.

"Your Majesty, His Royal Highness is ready to fire, do you want to dodge?" Li Chunfeng suggested in a low voice.

"Alright!" Considering the danger of the cannon, although Li Shimin was a little bit reluctant, he still listened to his advice.

"Well, Your Majesty, Your Highness the Crown Prince, please come and go to the room behind you."

"Ah."

The group came to behind the wall of logs and sandbags, and the direction of the mortar could be seen through the observation hole.

After setting up Li Tai and the others, Li Chunfeng said to the two disciples behind him, "Move the sandbags and pile them up to form a wall. Remember to lie down behind the sandbags after lighting the fire."

"Disciple understands!" As they spoke, the two walked over firmly.

"This is?" Li Shimin looked at the two with some puzzlement.

"Hey" Li Chunfeng sighed, and explained in the eyes of Li Shimin and Li Tai: "Even if you have made a model, it is very dangerous to experiment. Explosions are common, and some people have been injured.

After a lesson, they came up with this method, using a few sandbags to build a low wall not far from the cannon. As long as the fire is lit, people can quickly lie down behind the sandbags and be safe. "

Scientific research has casualties!

Although Li Tai didn't know how many people were injured or injured, but from Li Chunfeng's helpless words, he felt that this achievement was hard-won.

Chapter 128 I want to test the gun

"Hey~" Li Tai breathed a sigh of relief, looking at the two craftsmen who were carrying sandbags to make a protective wall, feeling very complicated.

He turned his head and said to Li Chunfeng.

"Without their sacrifices there would be no cannon today, and their sacrifices were worth it.

Their children will be supported by the prince's mansion until they grow old, pensions... don't worry about the funeral, the court will not forget them.

You are a big disciple, you are a big disciple, all these things have been sorted out, and after returning as a teacher, they will be distributed uniformly. "

"The disciple thanked the master!!" Li Chunfeng and other disciples were very grateful, and the fellow craftsmen flushed with excitement.

Li Tai waved his hand and said directly: "Don't worry about bold research, the imperial court will take care of your worries, and money and food are not a problem."

This request is nothing at all, there are plenty of supplies.

It's just that the treatment and status of craftsmen have to be improved. You must know that the status of craftsmen is very low.

Because the ancient emperors had a system of sacrificial burial, craftsmen were usually buried together after completing the mausoleum.

Archeology found that sacrificial burials first began in the Shang and Zhou dynasties, and continued until the Qin Dynasty, such as concubines, craftsmen, etc., directly accompanied the emperor to die.

Only in the Han and Tang Dynasties, the funeral system was implemented.

Sacrificial burial is the direct burial of living people, while burial is to leave a place next to the imperial tomb, so that the emperor's relatives and dignitaries can be buried next to the imperial tomb after death, and accompany the emperor together.

There is this fundamental difference between the two, and for this reason, Wu Meiniang was not buried, but was sent to a nunnery.

However, after the Song Dynasty, ethnic groups such as the Khitan had a tradition of martyrdom, which led to the resurgence of sacrificial burials.

···

Soon, the two disciples were sweating profusely, and finally built a low wall of less than half a meter from the sandbags.

Although short, it was big enough for two people to lie down and hide.

Then, a disciple picked up the cylindrical explosive package with his right hand and carefully put it into the muzzle of the gun, while holding a lead wire wrapped around a hemp rope in his left hand.

After the dynamite bag was in the bottom, another disciple carefully raised the big iron ball and stuffed it carefully.

Li Tai watched in horror, the fire cotton can't withstand high pressure!

Such a big iron ball...it's easy to explode! !

While Li Tai was shocked, the two had already started the next step.

One person took out two pieces of flint from his belt, and scratched it under the fuse exposed by the muzzle, sparks burst out and ignited the fuse.

Seeing that the fuse was lit, the two quickly ran behind the sandbag wall and covered their ears.

And the group of people hiding behind the protective wall also covered their ears very skillfully.

Soon, the sparks on the fuse wrapped around the hemp rope jumped all the way on the hemp rope.

This fuse burns faster than the last time, and unlike the previous smoke, this time there is only very little smoke, which is almost negligible.

Sparks entered along the gun barrel, crossed the big iron ball, and finally burned to the end, igniting the explosive package.

In an instant, the scorching flames and high temperature exploded violently, and the gas expanded violently, forming a powerful impact force.

This force caused the base of the mortar to sink suddenly, and the reaction force sent the surrounding sand and dust flying up to a height of one meter. If anyone was nearby, they would definitely eat their faces full of dirt.

On the other side, the iron ball was accelerated to a terrifying speed under the impact, and roared out along the direction of the gun barrel.

"Bang!" The group of people heard a loud noise, and a shock wave and flames visible to the naked eye appeared at the muzzle.

Immediately, the terrifying speed of the iron ball rubbed against the air to make a sharp and piercing sound, and a parabola was drawn in the air. After a short flight for a few seconds, the iron ball landed on the river beach.

"Boom..."

There was a heavy muffled sound, and the iron ball seemed to be a stone falling into the water. The huge impact of the soft sand hit a height of more than ten meters, and finally fell like water.

Only the dust in the air and a huge crater were left.

The ears of a group of people were buzzing, and they looked at the scene in front of them in surprise, unable to speak for a long time.

After a while, the group of people came to their senses.

Li Chunfeng skillfully took out a paper and a pen from his sleeve to record the data, and said in disappointment while recording, "Missed again!"

While speaking, he shook his head regretfully, and took advantage of the opportunity to dig his ears.

Li Shimin shook his head, closed one eye, and looked towards the pit with a binoculars, muttering in his mouth: "It's like a god descending into the world, unrivaled."

And Li Tai frowned, because through this monocular, the deviation was at least 200 meters away from the target wall.

Listening to the sound, there is no second explosion. This is simply relying on the weight of the iron ball to destroy the enemy.

The accuracy of the mortar is already a bit poor, plus the spherical projectiles fired, plus the influence of factors such as wind speed, humidity, etc., so much deviation is acceptable.

Despite all the flaws, this thing is worth owning.

"I want [-] cannons!" Li Shimin beside him uttered bold words with a full face of excitement, which shocked everyone.

"Ten thousand cars?"

"The minister will do his best to serve His Majesty." The faces of the few people beside him were full of excitement and joy.

Ten thousand cannons means 300 million catties of copper-iron alloy, as well as countless shells and cotton...