What Chen Mu told, he himself forgot that he had asked Guan Yuangu to ponder cement, but Guan Jiang always remembered.

The cement ratio was made out by Guan Yuangu, this thing is not complicated, and it is very similar to the materials used in the past, but the ratio is different, but the Ming Dynasty has no precedent in this regard, so it has to continue to try in a stupid way, but fortunately, Chen Mu gave the raw materials, and Guan Yuangu has a lot of manpower for him to use, so there is the present world of cement.

In Guan Yuangu's words, cement is not difficult to make, steel and iron ribs are not difficult, it takes stupid effort, but it is very difficult to transport so much cement and steel bars to put together.

Guan Yuangu wrote to ask Chen Mu to come back, not to ask him to see the cement tower.

The craftsmen of this era are far different from later generations, they are more like craftsmen, meticulously carved, even if it is a cement structure of Taoist pagoda, in fact, there is no difference from the past buildings on the outside, the same lacquer, the same carved beams and paintings.

Ten five-pound guns bombarded a concrete wall at intervals of 100 paces, and three salvos had just cracked the wall, which was already okay.

"With this, we can also build permanent fortifications, and if the iron ribs are difficult to do, we can also use wood and bamboo. If the lime is not enough, you can also use the volcanic ash of the Nanyang, and there are many idle Daifuku in the Nanyang Guard, and there is volcanic ash everywhere in the Nanyang, and sending a hundred Daifuku fleets can pull back 200,000 stones in the past two months. ”

"Master, in fact, cement is made, saving iron."

Chen Mu played with the kerosene lighter made by Nanyangwei and wondered, "What do you say?" ”

The lighter is a small thing, the iron shell cotton core, flint can be used for ignition, as long as you have a little kerosene, it is very convenient to make a fire outside. This is made by Nanyangwei, and it has not yet been put into mass production, according to the meaning of Lu Bo, the commander of Wutang Mountain, the navy, this thing must also be equipped with the whole army of Liangguang.

Chen Mu brought another and most important reform to the Ming army, which was the standardization of equipment.

Carry the equipment has now been implemented throughout the Guangdong Division, the lower-level officers canvas, the school leather, backpacks, blankets are all produced in Xiangshan, this little thing alone can make the fire more convenient, naturally also to join the carrying, but it is impossible to have one person, each small flag has a good one.

Guan Yuangu said to his entourage, asked Chen Mu to wait for a while, and said to Chen Mu: "There are more and more fleets, and the consumption of iron bullets is also increasing, and the stone bullets are light, but they are also very hard. ”

Chen Mu disagreed, and said, "Can this thing shatter the ship's board?" ”

If all the stone shells were replaced, and the enemy ships would not be able to be smashed by then, it would not be a joke.

"It's not a shell, it's a concrete bullet for a shotgun or a gun."

Guan Yuangu was saying, and the entourage brought two small barrels, Chen Mu knew at a glance that they were scattered bombs used by the Ming army, filling wooden blocks at the bottom of the small iron cylinder, sealing the paper shell, and he tore open the paper shell and there were cement bullets of uniform size inside.

I listened to Guan Yuangu said: "Stone bullets are lighter, and you can hit farther with this shotshot, just to hit people, and the power is enough." ”

This is very interesting, Chen Mu immediately opened his hand and shouted: "Take the armor, breastplate." ”

The handcuff on his waist was filled with a stone bullet, and after a while, a family member put a cuirass in the courtyard, Chen Mu hit it with a gun in less than ten steps, and the stone bullet passed through the cuirass and was built into the thick wooden board behind it, and after the flag army took the stone bullet back, Chen Mu was amazed.

The stone bullet cracked, but it didn't shatter, because it was mixed with fibers, that is, cloth, and it was obvious that Guan Yuangu came prepared.

What kind of bullet does not change much in the size of the musket, the lead bullet is the same as the iron bullet, it is nothing more than what material is used to make bullets in China, just a standard, not fragile on the line, there are many iron in the Ming Dynasty, so it is naturally made of iron.

But cement is really too brittle compared to metal.

Seeing that the power was not bad, Chen Mu asked the soldiers to take the long bird gun and test it, and said: "If the power is okay, use a part of it to make guns and scattered bullets, this thing is light, and it is not bad for the flag army to take two catties less." ”

Heavy artillery shells are definitely not good, and now the trend of all countries at sea is to make the ship board thicker and thicker, and only heavier and heavier shells can penetrate the hull of the enemy ship in order to achieve the effect of sinking the enemy ship, but the ship scattered shell can use cement projectiles to reduce costs, anyway, to hit people, especially sailors who lack armor, it does not take much effort to penetrate.

If you can't penetrate it, it's actually more lethal, and it can directly make people lose their combat power.

"Let's use it for a while, there will be no shortage of iron in two years, and it will still be the world of flowering and blasting bombs in the future, and that thing cement is not good."

When Chen Mu said this, Guan Yuangu smiled and asked, "Master, when it comes to flowering bullets, is it easy to use the collision angle?" ”

"Exploding ramming?"

Speaking of this, Chen Mu shook his head and said: "It's better to do less to hit the horn boat in the future, the era of jumping gangs at sea has passed, and naval battles are the battlefield of artillery after all." ”

Chen Mu didn't want to discourage Guan Yuangu's enthusiasm, people finally innovated something, it would be bad if he directly rejected it, but it is true that at present, the explosion collision angle basically did not work.

On the contrary, when he came back this time, the fleet followed a ramming ship, which ran aground at sea, and the collision angle exploded on the reef to startle the sailors of the fleet, but fortunately the design was cleverly designed and did not hurt anyone.

"Yes, the master said that the collision angle should be made on the shell, and the explosive bundle has been made."

Guan Yuangu looked very happy, he was an old craftsman, and he didn't know much, but it was better to have Chen Mu to guide the way, what could make the craftsman happier than making new and useful things?

Soon, bundles of explosives and several boxes of new shells were placed in front of Chen Mu, which scared him, and he looked at it from a distance for a long time before approaching it when he felt that it was no problem.

Can this thing be stable? In case of an unstable blast, the Ming generation of talents will be destroyed on the firearms they made, what a loss.

However, Guan Yuangu is also quite concerned about this matter.

The wooden box for the shells was specially made, and the flat box contained layers of wooden lattice, which just happened to jam the long shells on it.

"Eh, how do you know that a cannonball is going to be made into a long strip of point?"

Daming geometry is not very good, strong in algebra, this kind of streamlined thing to reduce wind resistance Ming Dynasty craftsmen should not know, Chen Mu was surprised by this, but Guan Yuangu quickly gave an answer, and said: "Is the long cylinder good?" It seems that Lao Er has done it right, and there must be a mechanism for the wheel to ignite after impact, and it will be done like this. ”

Guan Yuangu is really ruthless, some are drilling ship blasting shells, and some are big-headed bullets used in tiger squat guns, all of which are fired with machine wheels, and directly upgraded the tiger squat guns to mortars.

However, Guan Yuangu said that this shell is still in the pondering stage of the navy's martial arts hall and cannot be put into use, he said: "The big head bullet of the tiger squat cannon is no problem, the fragments can explode a radius of ten or twenty steps, and one or two hundred steps can be hit, but this long bullet can't be turned over if it can't hit far, and most of the time it can't be fired, and it's too close to five catties and ten catties of guns to hit a hundred steps, and the old man doesn't know what to do." ”

What to do?

Chen Mu nodded heavily, he knew the reason for the flip too well, and said: "The rifling of several years ago, try to engrave it in the barrel of the cannon, you must remember to thicken the new cannon and then engrave the rifling, use copper instead of iron, this thing is a big treasure, no matter what, you have to make it." ”

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