(Yesterday, this chapter was reviewed by the card.,The red part of the violation was all deleted.,When applying for the lifting of the ban.,There were several large paragraphs of illegal content.。 If you want to apply for the ban again, you have to wait until two days later. So this chapter was simply rewritten, too lazy to apply for the lifting of the ban. ）

Batavia City, the former Dutch Municipal Building.

Zhang Xianzhong has made meritorious contributions in continuous battles, and now he has become majestic, slapped the table and said: "Angel Liu, these Indian prisoners can't be used." It's not good to work one by one, eating is like a rice bucket, just take it all to siege the city as cannon fodder! ”

"Just one bowl of gruel a day." Liu Hanyi said.

Zhang Xianzhong said: "I will definitely not let them eat more, but they only eat a bowl of gruel, and they are completely unwilling to work." Whipped with a whip, he couldn't move a few times. If the overseer does not watch, he lies on the ground and basks in the sun. I also ordered that if you do a good job, you can eat more, and this trick is useful for Taiwanese headhunters, but it is not useful for those Indian prisoners. ”

Deputy envoy Sun Jue said: "I asked the wealthy Indian businessmen that these captives were all untouchables, and they could only do such work as digging up dung and moving corpses. They are not allowed to be religious, nor are they allowed to be reincarnated. They've been like that for the rest of their lives, and no matter what promises you make, they won't believe it. You said you could eat more if you did a good job, did you reward anyone? ”

"Reward? The work given has never been done, and it's okay that I didn't kill them. Zhang Xianzhong said angrily.

Sun Jue smiled and said: "Only by establishing faith in the Shang Dynasty can the Shang Jun change the law in the Qin State." Village Chief Zhang can also reward Lixin, regardless of whether those Indian prisoners have completed their work or not. Choose three people who work the most every day, and give them an extra bowl of porridge in front of the rest of the captives. And when those who were willing to work were abound, they gave four men a day. and it went up, giving ten or twenty a day. Then divide the Indian captives into groups, which group does the best work, and give them all an extra bowl of porridge. In order to eat more, the team leader will punish those who are unwilling to work. But remember, even after receiving a reward, you can't really feed them. Only those who are hungry know how precious it is to eat more. ”

"Will this work?" Zhang Xianzhong expressed doubts.

"Try it, Village Chief Zhang is reluctant to give a few more bowls of porridge a day?" Liu Hanyi said with a smile.

Zhang Xianzhong said depressedly: "Then try it." ”

The insensitivity of the untouchables of India is that they see no hope at all.

Sun Jue said: "These hundreds of Indian prisoners can actually be used for good use. Reward Fong's first, change their mindset and make them feel that they are also useful. And then let them be tenants in Luzon, real tenants, not serfs. As long as they are willing to work, as long as they learn to farm, no matter how lazy they are, it is enough. In the future, when the Datong army goes to India, these hundreds of Indian untouchables will be able to recruit and educate more untouchables. ”

Liu Hanyi said: "Let's talk about India later, shouldn't we step up our attack?" In a few days, the rainy season will come, and I heard that the rainy season lasts for three months. ”

Sun Kewang said: "It's not easy to fight, the Dutchman's castle has four fortresses. The walls were low and thick, and the artillery could not collapse at all. No matter which side you attack, you will be hit by the enemy in the fortress. ”

Zhang Xianzhong said: "The usual trenching method in the past is not easy to use here. The castle has a moat on all sides, and the moat must be filled in first. There is a moat, which is also connected to the sea. The other two moats are connected to the Tiger Canal. It can't be filled directly, so you have to dig a canal to divert the water from the Tiger Canal to other places and flow into the sea. ”

The crowd was speechless.

If you want to fill the moat of the Dutch castle, the amount of work is not ordinarily large, and you have to dig a canal to drain the water first, otherwise the city where the Datong army is stationed will be flooded.

"Can you flood ......" Sun Jue was halfway through the words, and he felt funny, "Okay, when I didn't say it." ”

The castle is close to the sea, and even if it is flooded, it will quickly flow into the sea.

Everyone discussed it repeatedly, but they couldn't think of a good way, so they could only besiege the castle until they ran out of food.

Tie Hong asked, "Do you want another night raid?" ”

"I'm afraid it's not easy to fight." Zhang Xianzhong shook his head.

At this moment, an officer in his twenties raised his hand.

The officer's name was Li Cunhui, and he was a missionary transferred from Liaodong. If there were casualties in the Luzon Datong Army, ordinary soldiers were replenished on the spot, but the missionaries were transferred from the mainland.

Li Cunhui said: "The city of Liaodong Tartar also has a large acute angle enemy platform similar to a fortress, and in the later period, he learned from us to build a fortress. I have participated in several sieges, and the difficulty of attacking the fortress is that the besieging side was bombarded by the defending artillery on the way to attack the city, and suffered a large number of casualties. The artillery of the besieging side of the city can hardly inflict damage on the defenders. I was in the army, and I had been teaching myself math, and I thought it was a geometric problem. ”

None of the people present understood.

Li Cunhui took out a small notebook and wrote: "Our army's previous trenching was too complicated, and the amount of work was too large. In fact, it can be simplified, just aim at the angular line of the fortress, extend the angular line all the way outward, and dig a trench along this line in the shape of 'B'. At each corner of the trench, a parallel trench was dug in parallel. In this way, it will be difficult for the defending artillery to hit the besiegers. In front of each parallel trench, the besieging party can use sacks of earth to build fortifications, hide behind the fortifications and in the trenches, and use fire guns to shoot at the city to cover the friendly forces who continue to dig the trenches, and block the enemies who go out of the city to destroy the trenches. ”

This little book was passed on, and I watched it carefully one after another.

The schematic diagram is very simple and vivid, even if you have not studied geometry, as long as you have a normal brain, you can see the benefits of this tunneling method.

Exponentially reduce the amount of work required for trench excavation and reduce casualties when digging trenches. In particular, the additional parallel trenches, which were fortified on the spot, also made it impossible for the defenders to come out and make trouble.

Zhang Xianzhong was very interested and asked, "How to deal with the defenders' artillery?" The artillery of the besieging side is difficult to hit the defenders. The artillery of the defenders, on the other hand, easily hit the besiegers. ”

"It's also a geometric problem."

Li Cunhui continued to draw the pattern: "The artillery of the besieging side should not be spread out in one word. A castle with four corners, such as the Dutch castle. The artillery positions of the besieging side only need to be located at eight points. Every artillery position, on the parallel line of the castle walls. As for which point to be located on the parallel line, it is necessary to calculate according to the height of the city walls, the caliber of the artillery, the weight of the shells, the angle of elevation of the shot. ”

Zhang Xianzhong was really confused this time: "Do you still need to use arithmetic to fight cannons?" ”

"This involves the analytic geometry created by His Majesty, and it is also related to the physical and mechanical movements," Li Cunhui continued to draw the schematic diagram, "After careful calculations, the shells issued by each artillery position, as long as the error is not too large, can fall on the city wall." Moreover, the cannonballs jumped and rolled along the city wall, and a single cannonball could hit a string of enemy troops, and it was useless for the soldiers defending the city to hide behind the female wall. ”

Everyone gathered around, and the general principle was understood, but the specific calculation was completely blind.

Li Cunhui said: "I have calculated the Dutch castle in front of me in detail. Since the castle faced the sea on one side and was too close to the city on the other, there were only three points of the theoretical eight excellent artillery positions that could be used. In addition, due to the complexity of the moat, the angular extension excavation method I designed could only dig the trench to the moat, not all the way under the fortress. Therefore, it can only be suppressed by parallel firing at low elevation angles, and then it is necessary to use human lives to attack. ”

Tie Hong said: "Don't rush to attack the city first, go and try what parallel shooting your artillery is." ”

Everyone went out of the city together, and Li Cunhui was on the east side of the castle, using a modified version of the measuring ruler to observe. Find the extension of the castle's walls, then use the equation to calculate the height of the walls, and then calculate the elevation angle and the landing point of the shells.

For dozens of minutes, I didn't do anything but math problems.

The location of the artillery positions was calculated, and then the artillery positions were built.

In front of the artillery position, sacks filled with dirt were used to pile up the fortifications, leaving only a hole in the barrel.

Three guns were pushed up and arranged vertically in a line.

The artillery of the defenders can already reach this artillery position. But this position was too strange to pose a threat to the city walls, so the Dutch defenders all stood in the castle and watched the excitement, waiting for the Datong army to waste ammunition by firing artillery outside the city.

"Can this be done?" Sun Kewang was skeptical.

"Boom, boom!"

Three shells were fired, passing over the bastion in the southeast corner and smashing into the wall connecting the two bastions.

This style of play will not cause any damage to the city wall, and continuous bombardment will not collapse the city wall for a year. However, the direction of the flight of the shells, which remained parallel to the city walls, as long as they did not hit too crookedly, would definitely fall on the city walls.

As for where it falls on the city walls, it doesn't matter anymore.

Because the elevation angle of the shot was small, after the shells fell, they bounced on the city walls. Every time it bounces and rolls, it will hit the defenders of the city, and the cannonballs will be a large string of cannonballs.

The lookout hand on the hot air balloon was already dumbfounded.

Three shells were smashed, hitting more than twenty enemies in a bounce. The Dutch army was all in the fortress, and the walls were full of Dutch civilians, who were so frightened by this method that they fled frantically, and in the blink of an eye, no one dared to stand on the city walls.

"Shoot back, shoot back!"

The Dutch artillery commander, finally unable to sit still, ordered the city defense artillery to aim at the artillery positions and fire.

"Push the artillery back!" Tie Hong hurriedly ordered.

Now it is not an official siege, only three artillery guns are used for experiments. And the defenders' city artillery will definitely be able to smash the fortifications of the artillery position.

After the experiment, everyone went back to summarize.

Sun Kewang said: "This method is really useful. But he could only fight the defenders on the city walls, not the defenders in the fortress. ”

Adjutant General Zhan said: "It is enough to be able to fight the defenders on the city wall. The fortress was dealt with by trench digging, and the artillery suppressed the enemy on the city walls, so that many people could die in the siege of the city. If there is no fortress in the city, with this artillery method alone, the defenders will not dare to stand on the city wall, and the siege of the city will not be easy to take? ”

Zhang Xianzhong said: "Yes, if a month ago, there was this kind of artillery method, why did we attack Batavia at night? ”

"It's not easy to take," Li Cunhui said, "but it does reduce siege casualties." When I was in Liaodong, I was thinking about it, but I hadn't studied analytic geometry at that time. It was during the shelling of the city of Batavia that I had a little idea, and two days ago I finally figured it out. ”

The method is very good and can be promoted by the whole army, but it is useless to deal with the fortress in front of you, the main reason is that the moat is too disgusting.

Of course, it takes a little effort to knock it down.

The canal was dug first, and the water of the Tiger Canal was diverted to other places into the sea. Then fill the moat with negative soil, then dig in a zigzag trench with an angular line, build fortifications with extended parallel trenches, and suppress the city wall at a parallel low elevation angle, so that the fortress can be forcibly attacked.

This offensive plan will have to wait until the rainy season has passed.

If all goes well, it should take three months to dig the canal and capture the castle.

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