"Eldest sister, don't make this kind of joke in the future, I'm very busy, I'm out of company...... If people are bored and panicked, let Di Xiaoniang accompany you and walk around this mountain at will......

Of course, don't be too casual, there are many places on our mountain that are mined, and if you accidentally step on one, it will be very bad......"

"Landmines? Is it the kind of big firecracker you play in Tokyo? ”

"Pretty much the same principle...... However, landmines are used to kill! This time, the reason why we repelled the encirclement and suppression of the imperial court is because of this thing......"

“…… You can't be led off the subject! We're talking about my sister......"

Di Sanniang is indeed a master, able to grasp people's psychology and good at negotiation, in fact, she didn't think about retaking the cottage for her sister from the beginning, so throwing out this question is to first raise the conditions very high, and then suddenly throw out the fact that her sister is already widowed, which means that if you kill my brother-in-law, you have to marry my sister......

It's like a commodity, marked with a sky-high price, and then sold to you at a 2% discount, as if you think you have taken a big advantage, in fact, that thing is worth a discount......

Su Xiaocai quickly understood Di Sanniang's wishful thinking, and he promised to marry her sister, so now this is a good cottage, and everything will become the Di family......

wants to steal the fruits of victory nakedly through this matter, but still has to pull the veil of warmth and affection of marriage, if it is true, a woman with a desire for power is not a woman......

"Tell me about your sister...... I don't say...... Really busy, farewell!"

"......" Di Sanniang was still about to say something, but at this time, someone happened to come over to report to Su Xiaocai, so she interrupted her......

"Big Boss, the sample has been cast, please go over and test it now, if it's good, then go and cast it according to this......" The person who came was Wei Chiqi.

"Was it cast using the lost-wax method?"

"Yes! Big Boss ......"

"I didn't expect you to really be able to understand, then okay, I'll go with you to see it......" Su Xiaocai arched his hand to Di Sanniang and followed Yu Chiqi......

The lost wax method is to use beeswax to make a model of the casting, and then use other refractory materials to fill the mud core and apply the outer fan. After heating and baking, the wax model is all melted and lost, making the entire casting model an empty shell. Then pour the molten liquid into it, and it will be cast.

This thing is used to cast cannon barrels, and it is very effective in the absence of cold rolling, cutting, and hollowing of stainless steel......

This time, Su Xiaocai designed the pit modeling, the mold material is prepared by wax and butter, the modeling material is lime triad soil and charcoal mud, and the ratio of wax and copper used is one to ten. The molten metal is poured through the channel, and the drawing is very complicated, but I didn't expect Yu Chiqi to understand it......

Di Sanniang asked curiously on the side: "What new things have been made, can I go and take a look?" ”

"Absolutely! Please ...... Of course, you can't go into the foundry......"

"Just go and join in the fun...... I won't reveal your secrets!"

So, I followed it to the school that opened up a large school...... Of course, although it is very large, it is actually the size of more than a dozen ordinary farmhouse wheat fields, after all, this is a mountain, and it is not so easy to open up a flat and wide open space.

Those large and small black iron pipes have been placed on the site by them, and when the wood and people moved to design these iron pipes, they designed the shells at the same time......

First of all, there are several solid cannonballs, which are better sounding cannonballs, but they are actually tile balls, stone balls, and iron balls!

This thing can indeed be fired with a cannon barrel, and the structure is extremely simple, just stones, you can pick up everywhere, the tile ball is burned out, the iron lump is also easy to make, it can be replenished quickly, and the solid shell penetration is very good.

On the battlefield, solid shells are suitable for firing at all kinds of targets, not only killing and wounding men and horses, but also destroying field fortifications such as bastions. Because of its low trajectory and linear damage, dense infantry columns and infantry phalanxes are often valuable targets for firing.

Thin infantry formations and cavalry were not suitable for the use of such shells. Solid iron bullets could easily penetrate columns of dozens of rows of infantry. Moreover, ricochets on harder ground still have a certain lethality. However, the disadvantages of solid shells were also obvious: the low trajectory made it difficult to effectively hit enemy units located on the anti-slope of the hillside.

Focus on stone balls and tile balls, this thing is fragile, divided into solid or hollow, solid is generally sandstone balls and tile balls, mainly used to kill and injure people, when loading is a whole, when disemboweled, it will be broken into fragments of different sizes, like a giant bird gun, big troll, in the case of relatively close distance, can kill the enemy on a large scale...... Of course, it can also be directly filled with crushed stone iron sand, or the iron sand can be packed in a clay pot, which has excellent lethality in the case of a short distance......

Su Xiaocai also made a hollow thing, this thing can only be called a cannonball, in fact, it is just a bad iron can filled with gunpowder and broken iron, called the earth-shaking thunder, which used to be thrown by hand and fired by a giant crossbow, but now it is planned to be launched with an iron pipe...... Use the fragments after the explosion to kill and injure the opponent. The internal charge is ignited by a fuse inserted in the opening of the projectile. The fuse is a hollow reed tube with a built-in twist, and the corresponding length of the fuse is cut for use according to the distance of the shooting target before loading.

This thing does not rely on the kinetic energy of the projectile itself, but on the kinetic energy of the fragment to destroy enemy units, so it can take a more curved trajectory. This makes up for the lack of solid shells very well. In addition to being used against troops behind hillsides, grenades are quite effective against enemy units of all formations in open fields. The ideal point of impact is in front of the target team, or preferably above the enemy queue......

Of course, these things are not completely imagined by Su Xiaocai out of thin air, before he came here, he had paid attention to the artillery in the Ming and Qing dynasties, and he still knew a little bit about these things, and he had a general impression, and now according to his memory, he will restore this thing......

He didn't know exactly what kind of killing effect it would have, and he would have to wait for the experiment to find out......

"Why did you make such a huge iron bucket?" Di Sanniang smiled and asked, "It's really hard to imagine that this thing of yours is a weapon used to kill the enemy?" ”

"You don't have to worry about this, when the enemy comes, you will know how powerful it is......

But to be honest, these things, I'm actually playing for the first time, they're all imaginary, and if there is any effect, it's not necessarily, maybe if you don't get it right, you'll hurt your own people......

So, please watch from a distance......"

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Sogou