The war entered the third day.

If it were in the past, the war on the third day would not even be considered a warm-up. After all, the siege troops at that time often had not even filled the moat outside the city.

But for the current Han army, the war on the third day can be tried to end.

The Huai River was also brought to the moat outside Xiacai City, but this time, the Han army finally took out the things hidden two days ago.

Hundreds of ships came along the Huai River in a mighty manner and soon drove into the moat with the help of the Han army.

Then, the soldiers of the Han army quickly crossed the "floor bridge" built by these ships and came to the city.

Zhao Kuo looked at this scene and his mouth curled slightly.

If it were another city, the success of this would be not high, but there would be no problem in Xia Caicheng.

Where did the ship come from?

The answer is brought from the Central Plains controlled by the Han Dynasty.

The Central Plains of this era was densely populated by water networks. From Daliang City, the capital of Wei, you can reach any country in the Central Plains. After King Hui of Wei dug the gulf, he successfully connected the Yellow River system and the Huai River system.

The main reason why King Hui of Wei did this back then was actually communication and trade, but now this waterway has been used by Zhao Kuo and has become a convenient waterway to attack Chu.

Originally, Zhao Kuo planned to wait until he attacked the capital of Chu, Shouchun, and then took it out, but Zhao Kuo did not expect that the Chu people would choose to take the initiative to attack the Han army in Xiacai City, so Zhao Kuo waved his hand and directly made this "Han Navy" appear on this day.

This navy is a real navy, because the Han navy is now being intensively raised.

With the help of many ships of the Han navy, the Han soldiers crossed the moat very easily.

After learning the news, Jing Yang, who had finally cheered up and planned to command the city defense, was furious and shouted: "Where is the archer?"

Suppress these damn Han people at all costs!”

At this time, Jingyang actually had no good idea. He could only hope that the Chu soldiers could withstand the attack of the Han army with their heroic combat power.

As for preventing gunpowder... this time, the Han army did not give Jingyang any chance.

Before, the Han army directly pushed it with a large cart, piled it up at the city gate and then instantly detonated it.

However, after Jing Yang discovered this combat method, he asked the Chu army to see the big cart and first take the rockets to see if they could detonate.

But the problem is, what if the Han army didn’t use a large cart to load gunpowder?

As the "Foreign Commander-in-Chief" responsible for specific command of all siege affairs, Li Mu had issued a very clear order before the attack: "Go and get me a thousand elites, each carrying ten kilograms of explosives on his back, and every city gate is arranged. This general wants to see how the Chu people are going to do it!"

Under Li Mu's order, the 4,000 elite Han army was mixed with the many troops attacking the city, quietly approaching the city gate.

The battle was very fierce, and from time to time, bows and arrows fell from above the city walls, shooting down many Han soldiers.

In such a fierce battle, one thing is easy to overlook, that is, people keep quietly throwing some small bags that look quite inconspicuous to the city gate.

These small bags contained exactly the ten kilograms of explosives each person asked by Li Mu.

As time passes slowly, there are more and more small bags at the city gate.

Finally, a Chu army archer noticed this.

The archer thought for a while and felt that it would be too late to continue reporting at this time.

So the archer took out the rockets that had been prepared long ago and shot them at the pile of small bags that had begun to accumulate at the city gate.

Perhaps it was because of being too nervous that the Chu army archer had time to think about a problem after the bow and arrow was shot out.

"What will happen to the city gate if these explosives are detonated?"

Before the archers could figure out the problem, the burning rocket had already landed at the city gate.

Next, a shocking explosion sounded instantly.

The heavy shock wave accompanied by the rolling smoke and dust immediately spread in everyone's sight. Jing Yang, who was standing in the command center in the city, was caught off guard and almost fell on the spot.

An extremely bad premonition surged in Jing Yang's heart, and he almost immediately shouted: "What's going on?"

No one answered Jing Yang's words, but the horror on everyone's faces proved one thing-they had already thought of what that was.

On the main position of the Han army outside the city, Zhao Kuo let out a sigh and laughed: "From now on, the war... will really be rewritten by us!"

The emergence of explosives is definitely a cross-age progress.

In the future, any city wall will become no longer safe, and people will be forced to leave the protection of the city wall and develop new ways of war.

Of course, it is - hot weapons! In this regard, as a time traveler, Zhao Kuo naturally has to be the charm of this era.

Not to mention, the large-scale production of muskets has quietly begun in the Mohist workshop. After the destruction of Chu, Zhao Kuo would consider again, which alien race should be used as the battle for the muskets! Just as Zhao Kuo's thoughts were flying, Li Mu, who was standing beside Zhao Kuo, also showed a proud expression on his face and said with a smile: "King, if you say that if we fight one city after another in the future, will the entire earth be occupied by us within a few years?"

Zhao Kuo couldn't help laughing when he heard this.

It is actually not difficult to occupy a place. The difficulty is how to rule a place for a long time.

This is what people often say, "It is easy to fight the country, but it is difficult to defend the country."

Why is it difficult?

Just give an example.

In the history of the Great Qin Dynasty, it took seven days to send a message from Nanhai County, the southernmost tip to Xianyang.

This is still the most urgent communication speed. Under normal circumstances, it takes at least one month to go back and forth.

How much will a month delay?

This can be experienced without thinking.

If someone rebels in Nanhai County, then it will take seven days for the news to come back to Xianyang, and then Xianyang City issues an order to suppress it and pass it back for another seven days. If the local army in Nanhai County cannot defeat the rebels and mobilizes troops from the mainland of the Qin Dynasty to move south, even if it urgently mobilizes various supplies, the civilians will have to start in two months.

This is why the Central Plains dynasty seemed particularly slow in dealing with rebels in history. There was no way, because of the lag in information transmission, and the speed of military mobilization was too slow.

If this problem cannot be solved, no matter how powerful a country is, the areas that can truly control and rule are limited.

So some people say that the Central Plains dynasty in history did not like to expand externally, which is actually nonsense. The main reason is that the places that can be controlled have been almost completely controlled, and the remaining places are difficult to control, or the losses that are lost after being controlled is greater than the investment, so they all forget it.

It’s like Kublai Khan, the founder of the Yuan Dynasty in history. After Kublai Khan inherited the position of the Mongolian Khan, why did he divide the Mongolian Empire into four major Khanate countries?

In fact, the answer is here - the territory of the four Khanate countries is so energetic that Kublai Khan could not effectively control such a large territory at all.

So Kublai Khan thought about it and simply took over the richest Central Plains of the Song Dynasty and the prairie generation that Mongolia started with, and sealed the remaining territory directly to other relatives.

Even if Kublai Khan does not grant his title, the four Khanate countries will be far away and will be independent sooner or later.

This is the limitation of this era.

It is actually very easy to solve this problem.

First of all, we must make the transmission of information smooth. The most obvious thing is that like modern society, two people can communicate on the two ends of the earth through phone calls.

The second is to make the mobilization of troops easier and faster.

These two elements cannot be solved in ancient society, but as long as Zhao Kuo allows Chinese society to continue to develop, a preliminary solution can still be obtained.

If you can't make a mobile phone, you can consider telegram.

Telegrams need to be sent, but they can't be done?

That doesn't matter, use the train roof first.

The speed of the train is much faster and more stable than that of the horses. The key is that as long as there is no accident, the train will never be delayed.

In addition, trains can quickly deploy Han troops to every corner of the world through railways.

Take the rebellion in Nanhai County as an example. If there is a train in the future, the rebellion in Nanhai County will be transmitted to the Imperial Capital in at most two or three days. Then, the Han army on the Imperial Capital will be mobilized urgently, and it will be able to take the train to the Nanhai County in just three or four days.

In just seven days, Nanhai County will usher in a large army to suppress the rebellion. Compared with the reaction time of the Central Plains dynasties that started at least two months in previous dynasties, it is much stronger.

For trains, they don’t need electricity, they only need another thing, that is - a steam engine! I don’t know how the steam engine in the Mohist family is developing.

I hope to catch up as soon as possible. After all, I will soon start a journey of conquering other races in the world! At this time, Zhao Kuo, although he was not conquered Xia Caicheng in front of him for the time being, his thoughts and thoughts had already flown and turned into the whole world.

After all, his target was the sea of ​​stars! At this moment, the group of generals around Zhao Kuo suddenly cheered excitedly, which also pulled Zhao Kuo's thoughts back.

When Zhao Kuo once again focused his attention on Xia Cai City, he found that Xia Cai City had been broken.

Three consecutive explosions sounded, and it was obvious that after the first explosion, the Han soldiers at the other three city gates also began to explode.

Countless Han soldiers flocked into Xiacai City along the gaps blown out by the explosives.

This scene has appeared in many cities in the past, but now it still excites all the Han generals.

The conquering of Xia Caicheng is not only due to Xia Caicheng itself, but also the complete annihilation of the main force of Chu! After the main force is gone, what else can Chu use to stop the Han Dynasty from continuing its attack?

Zhao Kuo smiled and patted Li Mu on the shoulder beside him: "You, the commander-in-chief of the front, look very relaxed."

Li Mu laughed loudly, and then said to Zhao Kuo very seriously: "Although it's very relaxed, but I will not give in to the credit you deserve, the best you deserve."

Zhao Kuo was stunned for a moment, and then laughed out loud.

The Chu Army Command in the city was already silent at this moment.

If the explosion doesn't mean anything, then the four consecutive explosions and the constant approaching shouts of killing are enough to prove everything.

Jing Yang's face turned extremely blue. He looked around at all the Chu generals present and wanted to say something, but in the end he still didn't say it.

Jingyang stood up and walked out of the command center.

Here, an elite Jing family soldier has been guarding the place.
To be continued...