When the monkey saw Yun Zheng stopping next to three strange large iron pipes, holding the iron pipes up, down, down, left and right, looking very excited, as if the bride saw Yuangui's husband, she almost cried.

Taking advantage of this opportunity, he quickly lifted Dashuai's feet and put on the lazy shoes. Forget the socks, there were too many people, so it would be bad for everyone to stare at Dashuai's socks to change.

Yun Zheng reached into the cannon barrel and stroked it, but found that it was very flat inside, not as rough as he imagined.

The roundness of the barrel is also very good. There is no trachoma on the cannon that is more than ten feet long. I patted the cannon with my hand and made a snap sound. The wall of the tube more than one inch thick is very thick. You can tell at a glance that this thing is very sturdy.

"Have you tried it?" Yun Zheng looked back at Sun Jie who came to deliver cannons.

Sun Jie was from Jiaziying and the first group of old people to go to the Eagle Nest. He used to be responsible for the resettlement of his family members in Jiaziying and did not leave the Eagle Nest easily. This time he came to Yanmen Pass because he really couldn't find a suitable person to escort these three things, so he had to take the people away by himself.

"There is not yet a word for the Lord."

Yun Zheng frowned and said, "Why don't you try it? I remember that the matching projectile has been developed long ago."

Sun Jie was waving for a long time before saying, "The Second Young Master..."

Yun Zheng suddenly realized, "You mean Yun Yue didn't let you test it?"

Sun Jie said embarrassedly: "Our iron smelting plant has built five pieces of this kind. After the second young master went to the Eagle's Nest, he brought all five cannons to the mountains. After he came back, he asked the young man to send these three cannons to the master. He brought the other two cannons to Dengzhou."

Yun Zheng looked up and found that the people around him were all the old men from Jiaziying, and there was no worry about leaking the secret. He smiled and said, "Since Yun Yue didn't let you test it, it's for your own good. So he wouldn't leak military aircraft in the place where the man in the Eagle Nest was talking.

Sun Jie, tell me, is this thing troublesome to cast? Is it cast as I asked? Is there a problem in the middle?”

Sun Jie smiled bitterly and said, "Reply to the words of the general, four people were disabled for these five cannons, because they were cast in the overall mud pattern. More than 1,100 kilograms of molten iron must be poured into the mud pattern at one time. It is common for a slight deviation to blow the iron chamber.

Since receiving the military order from the general, the iron smelting plant has done nothing else in more than a year. It only made sixty-three clay patterns by casting these things, and in the end there were only thirty-four ones. After screening, the scraps with trachoma bubbles were removed, and only these five were barely visible.

The masterpieces from the capital and the more than 300 masters from our iron smelting factory were sleepless, so they could only build these five gun barrels..."

After hearing Sun Jie's complaints, Yun Zheng smiled and said, "It's very good. It's not a big deal to waste some money. As long as you can create these things, it's a great achievement. I will naturally reward you on the merits. But you need to create more of this kind in the future."

Sun Jie looked around and whispered in Yun Zheng's ear: "It's not possible, the second young master moved the iron smelting plant to Dengzhou. The master of Eagle Nest, the casting master from Tokyo, took away all the tricksters from Tokyo, and said that he wanted to rebuild the workshop on Wild Donkey Island."

Yun Zheng shook his head and smiled, but he didn't care. Yun Yue is different from Yun Yue before. He now pays more attention to sea construction. The Yun family will settle down at sea in the future. There is no weapon that is more sharp than artillery fighting at sea.

Think about it, it's all like this. When other pirates are still chasing me and then jumping into battle with a knife in their mouths. The Yun family's fleet is able to start attacking people a distance of one or two miles away. With the weapon of artillery, the Yun family cannot have any opponents at sea.

China is the hometown of artillery, Yun Zheng is very clear about this point. It was the emergence of gunpowder that gave birth to this thing. There were many gunpowder weapons in the Song Dynasty, but in Yun Zheng's eyes, they were all messy things, and the scaring elements were more than actual use.

Yun Zheng had seen the sudden musket. This thing was used by many military soldiers as hidden weapons. It was like a large firework. The sparks emitted had no purpose at all, because the casting process could not keep up, and the number of times it hurt itself was far more than the number of times it burned the enemy.

Many people in the Song Dynasty had some secret weapons passed down from their families, and the storm was one of them. The guys who used this kind of thing only took it out when the war was at its most tense. When the treasure was taken out, it disrupted the structure of the military formation. What's more, this thing sometimes exploded in his hand, not only could not hurt the enemy, but also implicated his brothers. Therefore, the soldiers in Yunzheng's army strictly prohibited the soldiers from arming themselves.

Many times, Yun Zheng couldn't figure out why, even though the most simple front-mounted smoothbore cannon, such as the sprint musket, had already appeared, no one made great efforts to study this thing, so that later people still had to use the so-called Red Barbarian cannon.

Later, he asked someone to put a few cannons on the coast and easily blasted the national gate.

Yun Zheng thought that such things as flowers bloom on the wall and fragrance outside the wall should be strictly prohibited.

Modern artillery developed from a stone thrower invented in ancient China.

The stone thrower is also called a stone chariot. Its structure is very simple. It makes a horizontal axis on a wooden frame and a long rod is inserted between the shaft and the horizontal axis. One end of the rod is tied with a leather nest containing stones, and dozens or more than a hundred ropes are tied to the other end. When using it, put the stones into the leather nest. With a command, everyone pulls the ropes together, and the stones in the leather nest are thrown out like flying.

The stone thrower was first used in wars during the Spring and Autumn Period and the Warring States Period. According to the "Three Kingdoms. Book of Wei", during the Battle of Guandu, Cao Cao used a stone thrower to break through Yuan Shao's camp, thus winning a great victory.

From the Han Dynasty to the Tang Dynasty, although the use of stone throwers in combat gradually increased, their scale was generally smaller. During the Tang Dynasty, stone throwers became larger and larger, and some required one or two hundred people to pull ropes to throw out the huge stone, and each stone could kill several people.

During the middle of the Tang Dynasty, the invention of gunpowder made a qualitative leap in the development of stone throwers.

It was not until the beginning of the Song Dynasty that gunpowder was used on a large scale in the military field.

The stone thrower changes from throwing stones to throwing fireballs. Fireballs are also called gunpowder bullets. The main purpose is not to blow people to death, but to burn people to death. The efficiency is outrageous.

Until Yun Zheng improved the gunpowder formula, the way gunpowder hurt people changed from burning to explosion, and the efficiency of killing increased by more than ten times.

Of course, the rear-loading cannon is advanced and the bombardment efficiency is high. However, Yun Zheng is not able to create that kind of cannon now, and can only take out the oldest red barbarian cannon to recharge. Now he can only fire solid bullets, iron sand, or chain bullets. Using this cannon to deal with cavalry is simply nonsense. When the two armies face off, the cavalry will kill in front of him in just a few breaths, and this kind of cannon cannon cannon only take one shell in about two minutes. If you expect this thing to deal with the Liao Kingdom or the Western Xia cavalry, you are purely looking for death.

After a shell flew out, the artillery had to quickly pour water into the cannon barrel, then clean the cannon chamber with something like a mop, then fill the gunpowder, stuff the fuse rope into the hole, pound it firmly, then stuff the solid projectile in, and finally ignite the gunpowder rope, and wait for the medicine to twist it slowly... After all this was done, the cavalry's blade had already chopped on its head.

The reason why Yun Zheng wanted to build such a thing was to attack the city. As long as he pushed the thing to the edge of the city gate and aimed it, the projectile weighing more than ten pounds hit the city gate with a scattered force. No matter how strong the city gate was, it could not withstand a few such shells.

Chen Lin also put on her clothes and came out. Facing these three heavy and inconspicuous things, she really couldn't think of what it was for. After Yun Zheng's army left Yanmen Pass in Dai County, what she wanted was to quickly cut off the connection between the east and west of Liao, and seize the Xijing of Liao with lightning speed, then advance eastward, and finally intercepted the reinforcements from the Zhongjing Road of Liao in the Gubeikou area. If you brought such three iron lumps, how could you keep marching quickly?

Yun Zheng's white teeth were particularly eye-catching in the night. Before Chen Lin could ask questions, he smiled and said to Chen Lin: "Don't look at this thing being bulky, but this thing is a powerful weapon for siege. Even if the speed is slower on the way, we have to break through at least seven strong cities along the way. With this thing, siege the city and siege are no problem."

Chen Lin also looked up and down at the things in front of her. She really couldn't think of how to use this thing. Seeing that Yun Zheng didn't seem to introduce the usage of this thing to him, she frowned and said, "The military aircraft is fleeting. If the itinerary is slowing down because of taking this thing, I will not help you explain to the center and your majesty."

Yun Zheng saw the person who dared to look down on the God of War for the first time, and smiled and said to Chen Lin: "When you have seen the power of this thing, I promise that you want to hug him when you sleep."

Chen Lin laughed and said, "If this is the case, I will wait and see. This battle is a match between a dignified army. I don't want you to fail because of these tricks!"

Yun Zheng laughed and said, "Old Chen Lin, you are just a military supervisor. You have never been on the battlefield in your life. Now there is a military aircraft on the left and a military strategy on the right. Are you sure you understand what you are talking about now? As long as I don't pull my legs on the battlefield, you can stand aside and watch me attack the city and get such nonsense!"

Yun Zheng's words were very rude, but Chen Lin was not angry. The old guy didn't care about Yun Zheng's always wanting to anger him. In his opinion, as long as Yun Zheng honestly went to the battlefield and helped the Song Dynasty win this century-old battle, he didn't care about the rest. For a person who even wanted his life for the Song Dynasty, except for victory, the rest were the last quarter. (To be continued)
Chapter completed!