In the test range, the target of the Wuhuang cannon was a house with a flag on a mound of dirt a mile away, representing the position of the enemy's "Chinese army".

In this house, there are more than a dozen humanoid stone sculptures of equal proportions, representing "enemy generals".

"Rectification, rectification......"

The voices of the artillery captains in front of the guns came one after another.

"Reload!"

The loader of each gun position respectively filled the muzzle with solid ammunition, filled it with gunpowder, and drew out a long fire rope after being filled, and then the gunner stood aside with a long ignition stick and waited for the order.

"Fire!"

Li Dongfeng shouted, and the test officially began!

"Fire! Fire! ”

With a deafening cannon sound, fierce flames appeared from the muzzles of the ten Martial Emperor cannons, and the front of the guns was filled with gunsmoke.

In the roar of the shells, the "enemy command room" a mile away was pierced by the shells, and a large amount of dust rose up.

"Brush the chamber!"

Immediately after the cannon was fired, a loader took the gun brush and brushed the gun breech.

In front of the mound in the distance, an artilleryman ran desperately into the room to check, and soon ran out desperately waving the flag.

Li Dongfeng showed an excited look on his face, and saluted Zhu Cihong: "Your Majesty, all ten cannons have hit!" ”

There was a burst of laughter and laughter around, and everyone said in unison: "Okay! ”

"Check it out!"

Zhu Cihong personally went to inspect the cannon, and everyone behind him swarmed with him.

The Wuhuang cannon is a smoothbore cannon, which can use solid shells and flowering shells, and this test is a solid bullet with strong penetration to test the power of the cannon.

In front of the target house, Zhu Cihong carefully examined it, and saw that there were a total of twenty holes in the thick wooden house, which were obviously all hit through.

At a distance of one mile, the Hongyi cannon can barely have one or two hits by relying on coverage, and the new cannon hits all the targets, which is enough to prove that its accuracy is terrifying!

Entering the house, Zhu Cihong was even more surprised, there were more than a dozen humanoid stone carvings inside, several of them were hit, some of them were hit in two, some of them were gone, and some of the stone carvings had obvious traces of solid bullets penetrating the shoulders, revealing semicircular ballistics.

Look at the mound behind the house, and the ten deep potholes are surrounded by fresh dirt.

Zhu Cihong smiled and said, "Li Dongfeng, you just said that this cannon is called the Martial Emperor Cannon?" ”

Li Dongfeng said: "Back to Your Majesty, so the power of the cannon is rare against the sky, the minister has the courage to name it Wuhuang Cannon, the full name of Wuhuang Field Cannon, which means that this cannon is like His Majesty the Tianwu Emperor, and the divine power is invincible!" ”

"Emperor Wu Field Artillery ......"

Zhu Cihong touched his nose, how did he feel that this name didn't look like a cannon name, but a story?

He smiled and said: "The word field is hidden, let's call it the Martial Emperor Cannon." ”

"Yes!" Li Dongfeng responded.

Zhu Cihong smiled, the Wuhuang cannon is also a copy of the Napoleonic cannon, this cannon is far smaller in weight than the Hongyi cannon, strong mobility, fierce firepower, and extremely simple to manufacture and use, a proper artifact!

Everyone present was smiling, and even said that this cannon was only seen in his life, and it was all the work of God Weibo Li Dongfeng.

Li Dongfeng waved his hand again and again modestly, and then he changed the topic and talked about the latest casting technology.

The artillery used in the Ming army today is basically produced by the iron mold casting method proposed by Zhu Cihong more than ten years ago.

However, Li Dongfeng found that although the advantages of the iron mold method are faster than the frequency of making cannons by the clay mold method, the disadvantages are also fatal, and the life of this kind of quick cannon is very short.

From the point of view of metal casting and metallography, the heat dissipation of the iron mold is too fast, so that the pig iron liquid has a large problem of supercooling when cooling, when casting the cannon, the outside will be cold first, and the middle cooling is the slower, resulting in the formation of white iron, resulting in increased brittleness, the performance of the gun is reduced, and the life is also greatly reduced.

In order to increase the tensile strength, it can only be solved by stacking the mass by quantity, that is, by increasing the wall thickness, so that the weight of the artillery is in a terrifying state of thousands of catties, which is not conducive to mobile transportation.

In the past, the Ming Dynasty lacked artillery, and the Tianwu Army was an all-firearms army, and a large number of artillery was urgently needed to assist when fighting the Tartars and Liukou.

However, the Ming Dynasty has been used for many years, and many cannons have basically been scrapped due to the frequency of use, and they can only continue to consume iron ore to continue production.

This time, I finally fooled Little Japan, who had never played with cannons, sold 200 cannons, and thought about continuing to sell more, but the Tokugawa shogunate killed Shohito.

In order to further improve the performance of Daming's artillery, Li Dongfeng has been researching for more than ten years, and finally made a breakthrough and developed the inner mold irrigation cooling method.

Its principle is very simple: use a hollow casting process to cast the cannon around the core, and the inside of the core is cooled by flowing water, so that the inside of the barrel is hardened first, thereby greatly increasing the life of the cannon, reducing the scrap rate and casting cost, especially suitable for casting heavy guns.

After testing, the service life of the cannon cast by the frequent use of artillery and the use of the inner mold water irrigation cooling casting method can reach more than three times that of ordinary artillery in the past.

At present, the inner mold irrigation water cooling casting cannon method has been successfully tested, and officially put into production, this batch of just tested Wuhuang cannon, is cast by this casting method.

In this regard, Zhu Cihong only has one sentence: "Expand the production line, and make it vigorously!" ”

Li Dongfeng hesitated: "Your Majesty, the Martial Emperor Cannon is made of bronze, so it is extremely strong, and it can withstand the explosive force of a heavy charge or a double charge without breaking, which makes it so powerful, it's just ...... If you want to produce it on a large scale, you need a lot of copper ......"

Zhu Cihong understood it, he was distressed about money!

For a long time, the copper ore resources of the Ming Dynasty are scarce, and copper is equivalent to currency, and to build a thousand-pound Wuhuang cannon, it is equivalent to a thousand-pound copper coin!

Years of poverty have restricted Li Dongfeng, who was born as an ordinary craftsman, and he didn't dare to imagine what a price the emperor's mouth was for!

Zhu Cihong comforted him and said, "God Wilber, although you arrange to build cannons, you don't have to take care of the materials, and now I have no shortage of copper mines!" ”

In the past, the Ming Dynasty lacked copper and was reluctant to use copper to cast cannons, but now the Ming Dynasty has won Luzon, which is rich in copper resources, and it is developed! How to create how to build, this is capital! It's so capricious!

If it's not enough, just find another place to get it!

What the? This is not my Daming land, can't you take it?

Da Ming has always preached with strength, convincing people with virtue, three pounds to forty-eight pounds, which level of virtue do you want?

If you don't speak, you just want it?

Zhu Cihong hopes that Daming will have more martial emperor cannons in the future and blow up all the bitches!

What a nine-dash line, eleven a line, my Tianwu Emperor is a man who wants to draw a hundred and eight dash lines!