When Li Shimin followed Liu Tao to the site of the mine detonation, he was immediately shocked by the scene in front of him.

The pony was dead, lying motionless, its stomach had a big hole, its intestines were running all over the ground, and the ground had been stained red with horse blood, and in some potholes, the horse's blood had turned into black-red coagulation.

On the other side of the horse's corpse, there was a large pit with a diameter of more than one meter, and there was still a pungent smell of gunpowder in the air, with this smell, Li Shimin immediately understood the reason for the formation of this pit.

Looking at this big pit and the corpse of the horse, Rao is Li Shimin is well-informed, but he couldn't help but show a trace of shock.

"I didn't expect this thing to be so powerful, if I expected it to be good, even in the face of the charge of tens of thousands of cavalry, as long as there are hundreds of such things, they can completely destroy their formation, a good immovable king!"

Speaking of this, Li Shimin suddenly looked at Liu Tao again, his face full of seriousness.

"Liu Tao, I ask you, how much does this one Fudo Ming King cost?"

Li Shimin knows very well that no matter what it is, the first thing to consider is the cost, after all, smashing people with stones and smashing people with gold nuggets are completely different things.

Liu Tao didn't expect Li Shimin to suddenly ask this question, and after thinking for a while, he bowed respectfully to Li Shimin.

"Returning to the Holy Gift, the main body of this Fudo Ming King is hewn out of stone, and a skilled craftsman can make one in a day, without any money, what needs money is the firing device, because the firing device needs to use a mechanism similar to a fire sickle, so it costs about ten yuan."

"What? Ten cents? ”

Hearing Liu Tao's answer, Li Shimin's eyes immediately widened, and his eyes were full of incredulity.

Li Shimin is not too expensive, but thinks it is too cheap.

You must know that Datang's war horses are not cheap, a war horse also needs at least five or six yuan, plus daily forage and so on, it will cost about eight yuan a year.

The most important thing is that the war horse is still a consumable, and every year the old, sick, broken hooves, cracked hooves, etc., all need to be replaced, basically a small change every year, and a big change every five years.

In this way, if you want to feed 20,000 cavalry, you need 100,000 yuan a year, which is not a small amount.

But it's not good if you don't raise it, because the only one who can compete with the cavalry on the battlefield is the cavalry, and to carry the infantry with the cavalry is to find death!

Li Shimin once led 3,000 cavalry to break Dou Jiande's 100,000 army, although Dou Jiande's army was disheartened and had no intention of fighting, but the cavalry's restraint on infantry was also an important reason.

Therefore, in Li Shimin's view, if you want to deal with the cavalry, then you must refuse to defend the city, no matter how fierce the cavalry is, it is impossible to fly onto the wall, and the other is to use your own cavalry to fight with the other party.

But now he has discovered a new thing that can deal with cavalry - mines.

Although the horse pulls the cart and the war horse fights, there is no difference in the deconstruction of their bodies, in other words, since the mine can kill the horse, then it can naturally kill the horse!

According to Li Shimin's idea, a weapon like this, even if it is always worth the money, but he never expected that Liu Tao actually told him that the cost of this thing was only ten yuan!

So he was immediately shocked.

"You say this thing that can destroy a horse costs only ten cents?"

Seeing Li Shimin's shocked appearance, Liu Tao suddenly shrank his head, and hurriedly bowed to him again.

"Back to the saint, what Wechen said is just the firing device of the King of Fudo, the most important of which is the black powder filled inside, and Wechen doesn't know how much the black powder costs."

After hearing Liu Tao's words, Li Shimin not only did not feel distressed, but laughed.

"Hahahaha...... That black powder doesn't cost a few bucks! ”

Because Gao Ming made black powder in the East Palace from the beginning, these naturally couldn't hide from Li Shimin's eyes, so Li Shimin also knew that black powder was made of saltpeter, sulfur and charcoal.

In Datang, saltpeter, sulfur and charcoal are all sold in cars, and a car costs dozens of yuan, so that the cost of a mine is really only about ten yuan!

The price of a war horse requires at least five or six yuan, that is, the price of a war horse is enough to build more than five hundred mines!

As a general who once crisscrossed the battlefield, Li Shimin immediately thought of the application of landmines.

"This immovable king can not only kill and injure the cavalry, but also delay the charge of the cavalry, if you cooperate with 10,000 crossbowmen, even if you face 20,000 cavalry, you can easily repel it, and then use 5,000 cavalry to cover the kill, this battle will be won!"

Thinking of this, Li Shimin suddenly patted Liu Tao's shoulder.

"Liu Aiqing, from now on, you are responsible for letting the Ordnance Supervisor make every effort to supervise the creation of this immovable Ming King, and before the end of the year, you must build three thousand ...... No, 10,000 come, and the money I need will be sent to the Ordnance Prison tomorrow! ”

According to the price quoted by Liu Tao just now, the cost of a mine is more than ten yuan, that is to say, even if 10,000 are really built, it only needs more than 100 yuan.

For Li Shimin, this is just a small amount of money, and he doesn't need to go through the household department, he can come out by himself.

However, what made Li Shimin a little puzzled was that after hearing his words, Liu Tao showed a hesitant face and didn't speak for a long time.

Seeing this scene, Li Shimin immediately frowned.

"What's going on? Can't you make so many? If not, let's build 5,000 first! ”

Li Shimin took the initiative to lower his demands, not because he was reasonable, but because he was worried that if he forcibly put pressure, if the things made by the ordnance supervisor were of inferior quality, it would be even more troublesome at that time.

However, what he didn't expect was that although he had lowered his requirements, Liu Tao still did not agree immediately, and his face became even more hesitant.

At this moment, Li Shimin's face suddenly looked a little unsightly.

"Liu Tao, you tell me, five thousand immovable kings, can you make them?"

Li Shimin's implication is to tell Liu Tao that if you can't build it, then the head of the ordnance supervisor will be replaced.

Of course, Liu Tao understood what Li Shimin meant, so he could only grit his teeth, and then knelt down towards Li Shimin with a "poof".

"Your Majesty, my military weapons supervisor now has a total of more than 300 craftsmen, 10,000 Fudo Ming King, it only takes more than a month to build, but His Royal Highness the Crown Prince has already ordered me to supervise the construction of the Super Shenwei Invincible Fortress Cannon Enhanced Type I, so ......"

Before Liu Tao finished speaking, Li Shimin's eyes suddenly widened.

"What did you just say? Super Kamui what? ”

Li Shimin's question suddenly made Liu Tao a little confused, and he was stunned for a few seconds before looking at Li Shimin tentatively.

"Uh...... Your Majesty, are you asking about the Super Shenwei Invincible Fortress Cannon Enhanced Type I? ”

“(⊙o⊙)…”