Bai Yintu and Ao Bai also hurried over after receiving the report.

After listening to Gao Di's explanation, Bai Yintu didn't speak, but Ao Bai said that he didn't believe anything.

"Impossible, impossible, absolutely impossible!" Ao Bai looked disbelieving and disdainful, "The tiger squat cannon of the Ming army is all shrunk in their formation, and there is a slope protection in the middle, you say that the lead of the tiger squat cannon can cross the slope protection, I believe it, because the tiger squat cannon was originally fired into the sky, and the long-distance projectile of the Mongols is the same reason, but you explain that the army's tiger squat cannon can hit our fort through the slope, then you are playing us as monkeys, do you think I will believe it?" ”

"No, Lord Aobai, how dare I fool you?" Gao Di was so anxious that he was about to cry, "What I said is true, the tiger squat cannon of the Ming army is really like having eyes, and it is terrifying." ”

"It's impossible to have eyes." Ao Bai said angrily.

"Can you see the Ming army's position through the slope?"

"Ahh......h

In the end, there was really no way, Gao Di pointed to the dozens of corpses that were killed by the Ming army's tiger squatting cannon and were placed in a row and said: "But Lord Aobai, these dozens of corpses can't be fake, right?" ”

"Who knows how they died?" Ao Bai still doesn't believe it.

"Now let your men go to the front to build a fort, I want to see how the Ming army's tiger squat cannon hits your heads through the slope."

"Lord Aobai." Gao Di was suddenly anxious.

"Didn't you let us die for nothing?"

Seeing that Ao Bai was unmoved, Gao Di could only ask for the sound map.

"Lord Baiyintu, what I said is true, it's true."

"Gaudi, I believe in you." Bai Yintu's eyes flashed, and he said, "But what Ao Bai said also has some truth, we have to know how the Ming army fought you before we can come up with a way to deal with it, right?" ”

Gao Di was desperate, and he became a thief, and these Jiannu didn't treat them as people.

However, people under the mast of the house cannot help but bow their heads, who let them surrender now?

At that moment, Gao Di ordered his troops to divide into fifteen teams and go to repair the front batteries again.

Of course, the soldiers who surrendered were very dissatisfied, but in the face of the bright butcher's knife shown by Jiannu, they could only grit their teeth and move forward, and at the same time prayed in their hearts that the Ming army would never shoot again, or that they would not be able to hit them.

However, the ancestors have apparently abandoned these descendants who have forgotten their ancestors.

Just a while after the surrendered army entered the unrepaired fort, the tiger squat cannon of the Ming army rang out again.

With the loud sound of "boom, boom, boom", rows of closed bullets, as well as thousands of half-double leads, fell on the construction site like a torrential rain, and the army fell in an instant.

"Ahh Seeing this scene, Ao Bai finally believed.

"Gaudi, quickly withdraw the people." Bai Yintu hurriedly said.

Gao Di hurriedly asked his family Ding Mingjin to withdraw all the surrendered troops.

However, at this moment, his army suffered dozens of casualties.

"This is really evil." Ao Bai finally believed Gaudí's words.

"The tiger squat cannon of the Ming army, can you hit it without seeing anyone?"

Gao Di said with a bitter face: "Two adults, the fort really can't be repaired. ”

"No, the fort still needs to be repaired." Bai Yintu thought for a while, and then said, "But you can stay away from the Ming army's gun, the Ming army's tiger squat cannon can only hit 300 paces at most, but our Franc cannon can hit 500 or even 800 steps away, you can repair the fort 300 steps away, so that the Ming army can only stare dryly." ”

"Huh!" Gaudí had no choice but to obey.

……

Jiannu's move to move the fort 300 paces away was quickly reported to Chongzhen.

Chongzhen once again took his two sons to the front to observe closely.

"Father, we don't seem to have anything to do now." Zhu Cijiong said a little depressed, "The tiger squat cannon can only hit 300 steps, which is beyond reach." ”

"Holy Lord, or else attack."

Tian Xiong once again took the initiative to ask for a counterattack.

"No, you can't attack!" Chongzhen once again sternly refused.

Now is the critical stage of accumulating confidence and morale, Tian Xiong, the town soldier, or Xia Zhen, the ten town soldiers, has finally accumulated a little confidence, but it can't be squandered at will.

Jiannu hasn't gone south yet.

Waiting for Jiannu to go south in a big way is the real test.

"But Holy Lord, we can't just watch Jiannu build the fort, right?" Tian Xiong hurriedly said, "When Jiannu repairs the fort, we won't be able to fight back just by being beaten." ”

"No, it won't." Chongzhen said: "Jiannu repaired the fort five hundred steps away, and it was simply a blind man lighting the lamp. ”

"Blind man lighting a lamp?" Tian Xiong, Huang Degong, Zhu Cihong and Zhu Cijiong were all at a loss.

"It means sheer waste." Chongzhen explained with a smile, "The blind can't see the lamp anyway. ”

Zhu Cijiong said: "Father is saying that even if Jiannu repairs the fort, he can't beat us?" ”

"I can still hit it, but I can only hit the slope protection in front." Chongzhen smiled and said, "They can't beat the platform behind the slope protection. ”

Huang Degong, Tian Xiong and others were still at a loss.

Chongzhen squatted down and drew a sketch on the ground.

In fact, it is a simple schematic diagram of a ballistic curve.

"You see, this is our platform, and there is a slope protection in front of each platform, and the height of the slope is slightly higher than the fence of the platform, which is 2 feet higher."

"The distance between the two is 30 steps."

"The fort that Jiannu is building now is 500 steps away."

"If Jiannu's Franc cannon wants to hit our platform, it must at least see half of the fence in the front, at least two and a half feet high, and if it is less, it will be 2 feet."

"That's 4 feet tall multiplied by 17 times, and you get 68 feet."

"In other words, Jiannu had to build a 6 zhang 8 foot fort to see the fort, so that their shells could cross the slope and hit the front of the fort."

If you can't hit the front, it's pointless.

Because the defenders of the tower usually guard the front of the platform.

"What? A 6-foot 8-foot fort? Huang Degong, Tian Xiong and others all looked at each other.

What are you kidding, 6 zhang 8 feet is not as tall as the city wall of Nanjing? How big of a project is that? Even if it took a year to build a fort, Jiannu might not be able to build a fort.

Zhu Cijiong asked: "In other words, less than 6 zhang and 8 feet tall is the same as not repairing?" ”

"Yes, it's the same." Chongzhen said with a smile, "If you can't build the fort to a height of 6 zhang and 8 feet, then there is no difference between putting the cannon on the fort and erecting it on the ground, you can only hit the slope protection or hit the back of the fort, but that doesn't make any sense, because the defenders of the fort can hide in the front of the fort." ”

Zhu Cijiong said: "Unless they can learn our tiger squat......"

"Shh Chongzhen hurriedly made a silent gesture to Zhu Cijiong.

Zhu Cijiong's brain is a true spirit, so he began to draw inferences.

He had already thought of the "guided shooting" of the Tiger Squat Cannon to the Franc cannon and even the Hongyi cannon could also engage in guided shooting, but Zhu Cihong and Huang Degong didn't expect it at all.

Not even in the entire era has ever thought,

The Hongyi cannon can also shoot at a curve.

So this must be kept secret, strictly secret.

It's not that I don't believe Huang Degong and Tian Xiong.

It's just a thin layer of window paper.

Once this layer of window paper is pierced, with the quality of "good at learning" shown by the last two high-level Jiannu leaders, this magic weapon will definitely be quickly learned and popularized.

If Jiannu really discovered the subtlety, the artillery unit of the Eight Banners Han Army would soon be divided into observers, and there would definitely be artillery staff officers who specialized in ballistic calculations.

Maybe Jiannu's mathematics will improve by leaps and bounds.

This is something that Chongzhen doesn't want to see anyway.

Jiannu has a powerful Hongyi artillery force is difficult enough, if Jiannu's Hongyi artillery unit understands the essence of guided shooting, and evolves the real sense of infantry artillery support, supplemented by the powerful field killing of the Eight Banners and the cavalry of the Mongolian cavalry, then the Ming Dynasty still plays a ball?

Therefore, this layer of window paper must not be easily pierced.

Guided shooting can only be limited to the range of the Tiger Squat Cannon!

At least before the artillery of the Ming Dynasty formed a crushing advantage over the Jiannu artillery, the concept of guided shooting must not be easily introduced into the Franc machine gun and the Hongyi artillery unit.

Chongzhen stopped Zhu Cijiong, and said to Tian Xiong: "General Tian, while Jiannu is busy building a fort, let's hurry up and measure more shooting parameters and give Jiannu a calibration shot." ”

Tian Xiong asked with a blank face: "Shengshang, what is calibration shooting?" ”

Chongzhen drew a few more circles on the map, and then pointed to the circles and said: "Tian Zongbing, look, this is about fifty guns that your town is responsible for, originally when Jiannu attacked any of the outer platforms, only the four adjacent platforms could provide artillery support, but in fact, there were eight other platforms within three hundred steps. ”

"The tiger squat cannons of these eight guns can actually provide artillery support."

"If a total of 12 guns and 24 Tiger Squat guns can be determined in advance,"

"Then Jiannu attacks a certain platform again, and when the defenders of this platform retreat, the 24 tiger squat cannons of the 12 adjacent platforms can calibrate and shoot at it!"

"Ahh Huang Degong and Tian Xiong looked awe-inspiring.

Originally, there were only 2 Tiger Squat Cannons in each platform.

How did it become 26 tiger squat guns?

Could it be that this is the old legend of sprinkling beans into soldiers?

Chongzhen advised again: "But the parameters must be accurate."

"If the measurement is inaccurate or deviates, it is a small waste of ammunition, and the lead falls on the head of the robe, it will be a bad thing."

"And after the parameter measurement is completed, we must make a simple record and name each point in turn, such as the No. 1 point, which means that the first set of parameters is played, which corresponds to the No. 1 platform."

Tian Xiong listened as if he understood but did not understand.

Chongzhen sighed when he saw this.

He had tried to simplify it as much as possible, but Tian Xiong still didn't understand.

But it's no wonder it's much harder than guided shooting.

To put it bluntly, guided shooting is to let the cannon grow eyes, and calibrated shooting is equivalent to letting the cannon have a program.

It seems that without a high-quality artillery unit, large-scale calibrated shooting is not realistic, so you can only work hard to determine the firing parameters yourself.