The 600,000-strong army of the Qin State went south to attack Chu, which is now divided into three parts.

Looking from the south to the north, the "Southern Army" was a 150,000-strong Qin army led by Adjutant General Yang Duanhe, stationed on the line of Shangcai and Rushui, and confronted Sima Yesheng of the Chu State.

In the north, Yangxia was used as a stronghold, and Wang Jian led 30,000 Qin troops to guard the Yangxia military camp with 30,000 Qin troops as the "Northern Army", guarding the flanks of the Qin army and confronting the Zhexian and Kuxian garrisons belonging to the Chu State in the east.

Wang Jian personally led more than 400,000 people of the "Chinese army", including Zhao Tuo's troops, to the south, stationed on both sides of Guling and the chasm, and looked south at Chen Ying of Chu State.

Although the Qin army was outnumbered, they did not take the initiative to attack, and after setting up the camp, they began to order the coolies of their respective military camps to build a wall in front of the camp and make a defensive posture.

After nearly a month of rushing repairs and construction, a simple barrier has been built on the Qin army's defense line that stretches for hundreds of miles, and it is still being reinforced.

The Central Military Office of the Qin State, a 20,000-soldier camp near the chasm wharf.

General Zhao Tuo, who was in charge of the defense of this place, was leading his generals to inspect the construction of the barrier several hundred meters south of the barracks.

The walls and walls built by the Qin army used the traditional plate construction method.

The so-called plate building, is to build the wall with two wooden planks clamped together, the outside of the board with a wooden pillar support, between the two boards to fill the soil, wait until the soil is stuffed between the planks, let the people pick up the tamping pestle to pound the soil tightly, wait until the tamping is repaired, and then remove the planks and wooden pillars on both sides, the rammed earth in the middle becomes a wall.

There are also tall corner towers built on the wall, which serve as defense and lookout.

Behind the wall, in the open space between the barracks, there are also many towering wooden watchtowers, on which there are sentinels in charge of guarding day and night, monitoring the vast land outside the wall, once the Chu army is attacked, immediately send out warning signals.

Zhao Tuo noticed that the battlefield command in this era mainly used drums and golden cymbals, and there were no horns commonly used in later generations.

The horn is high-pitched, simple to make, and easy to carry, and was also used by ethnic minorities in some remote areas of this era.

It's just that no one has been used in the army in Zhuxia, and it should be a long time before it is popularized on a large scale in the army.

With this kind of good thing, Zhao Tuo naturally would not let it go, he asked people to hollow out the horns of the beast and make a special horn, so that the sentries on the watchtower could carry it, and when he saw a large number of Chu troops appearing outside the wall, he blew the horn to warn.

To this end, Zhao Tuo also conducted several battle simulations to train his subordinates how to deploy formations and counterattack when they encountered the attack of the Chu army.

"This wall is not very good, if you really let the Chu people carry the stake to hit it, I'm afraid it will crack in a few clicks."

Everyone inspected along the wall, and the black buttocks reached out and knocked on the wall that had just been built, and they all muttered.

He had served as a prefect and participated in local projects, so he knew a thing or two about the construction of the wall.

The Qin Law stipulates that the wall built by the service guards has a long warranty period, and if it is damaged within the time, then the relevant responsible person and the builder must be arrested and rebuilt. Therefore, every soldier in the service must know whether the wall he repairs will work or not, and whether it will leave hidden dangers in the project.

Zhao Tuo recruited the military secretary who was in charge of the construction of the wall.

As soon as the army arrived, he said with a face full of resentment: "General, this barrier is not as good as the wall in Guanzhong, first, there is not enough time, and it cannot be consolidated in a short time. The second is that the soil quality of this Huaibei is not good, far less than the loess in our pass."

Zhao Tuo nodded, this was the influence of objective conditions, so he didn't embarrass the army.

Instead, I thought that something might strengthen the defense of the wall.

It is built with lime, river sand, loess and other things mixed and rammed, and it can become "triple soil".

On the front line, lime is hard to find, but if you really want to get it, you can also use clam shells from the chasm to burn it.

This material has been used for a long time and is known as mirage.

It is clearly recorded in "Zuo Biography" that when Song Wengong died, he was buried with mirage. In the Qin State, whether it was building a palace or painting a house, this kind of thing was often used.

It's just that the defense line of the Qin army is too long, hundreds of miles away, even if the oysters in the chasm water are extinct, and all their shells are burned to ashes, it is far from enough.

Therefore, Zhao Tuo gave up building a wall with Sanhe soil here to increase his defensive power, but since he came up with this idea, it couldn't be useless.

Zhao Tuo still asked people to go to the water to find oysters, and then asked the craftsmen in the army to experiment with the ratio to find the best ratio formula for making hard triad soil.

Sanhe soil is strong and easy to use, and if you can't afford it now, it doesn't mean that you can't use it in the future.

He first got the recipe out, and when he found a large amount of limestone in the future, he could put it to great use, and this building material has a promising future, and there are many places where it can be used in the future.

Just as Zhao Tuo was thinking about his new invention, the soldier in charge of the lookout warning on the corner tower suddenly issued a warning, and a high-pitched horn sound was heard from the wooden watchtower not far away.

Immediately afterward, countless black smoke ignited from the wall.

Beacon Warning!

The Chu army is the best!

"Great, these Jing Chu barbarians are finally here, and Naigong's butts are itching!"

The black buttocks looked overjoyed, he had been in this military camp for nearly a month, and he had long been gearing up, thinking about fighting with the Chu people.

Who knew that only in the first few days, the Chu army sent people to harass and attack, and after being shot indiscriminately by the Qin army, he threw down the corpse and ran away, and never appeared again.

Today is finally here.

Zhao Tuo asked the generals such as Shima and Hei Butt to immediately return to the barracks to organize the soldiers to line up to defend the palace, and he took Zhong Liyi, Lu Juan and other cronies to the wooden watchtower in the rear.

Standing on the top of the towering watchtower, Zhao Tuo could see at a glance that a large Red Armor army was approaching from the south. A cursory look at it shows that there are probably as many as 20,000.

"Really?"

Zhao Tuo's eyes narrowed slightly, but he was not afraid in his heart, but there was a kind of excitement.

Because the advantage of the Qin army is too great.

The reason why Wang Jian set up the Chinese army's camp along the Guling line was that in addition to using the chasm wharf and the Guling city for supply. What's more, this place is just more than 30 miles away from Chen Ying of Chu in the south.

This distance is not long, and it can be reached in a day by daily marching.

If the Chu army sent troops from Chen Ying and resisted here within a day, it must be a tired pawn. If you come back after a night's rest in the middle of the night, you will have to travel ten miles that day, and it is impossible to compare physically with the Qin army in the camp who are waiting for work.

The second point is that although this wall was built in a hurry, it is not particularly strong, but it is very useful.

With this wall here, the chariots and cavalry of the Chu army could not play a role, it was impossible to surprise from the flanks and rear, and they could only rush the wall with infantry frontally.

In this way, the Qin army can first kill and injure a wave of Chu soldiers with crossbows and arrows, and wait until the Chu soldiers rush to the front, and then use the cover of the wall to fight hand-to-hand combat.

Even if the wall is captured by the Chu army, it doesn't matter if it is even destroyed, with this wall in front, the Qin army in the rear barracks has long been alerted, and they lined up in the open space between the wall and the barracks, and set up strong bows and crossbows.

After the Chu army broke through the wall, before they could line up inside the wall, they would encounter a rain of arrows head-on, and the casualties would be absolutely heavy.

After the rain of arrows was fired, the Chu people were greeted by a spirited, heavily armed Qin army battle array.

A small barrier wall is enough to change the situation of the entire battlefield, no wonder it is called a turtle shell by Chu Ling Yin Xiangyan.

So Zhao Tuo didn't think that the Chu on the opposite side would be stupid enough to really attack, the Chu army was already small, so why bother to launch an attack and damage his own soldiers?

The Chu army did not want to fight with the Qin army to consume national strength, and the only way was to lure the Qin army out of the barrier and go outside for a decisive battle.

Sure enough, after the Chu army arrived, it did not immediately beat the war drums and launch an attack.

"General, the Chu army is going to attack the wall with a weapon, and that thing is a stone machine?"

Lu Wan screamed.

Zhong Liyi on the side saw it sincerely, and said in astonishment: "No, look at that posture, it's not ordinary

The stone machine is a cannon!"

"Yes."

Zhao Tuo nodded slightly.

Standing on the towering wooden building, he clearly saw that behind the Chu army outside the wall, there were ox carts pulling all kinds of huge wooden blocks and metal parts.

The Chu soldiers unloaded the parts and began assembling them in an open space about two hundred paces away from the wall.

At this distance, this size, as the father of the giant cannons of this era, Zhao Tuo naturally saw at a glance what the Chu people were doing.

[In view of the general environment,

"The Chu army really has a cannon."

Zhao Tuo was not only not angry, but looked like he was really like this.

Because the Qin State had already prepared, Changping Jun Xiong Qi had a noble status, and when Li Xin was in charge of everything, he was in charge of everything in logistics, how could he not get the manufacturing technology of the giant cannon.

Not to mention that after the defeat of the Mengwu, I don't know how many Qin soldiers were captured by the Chu people, and there were many craftsmen in them, which was enough for the Chu army to make this kind of weapon.

Since Wang Jian wants to use the tactics of self-defense, he will naturally take these factors into account.

"It's a pity, the Chu people are not creative, and the other side still looks like the most old-fashioned first-generation aircraft."

Zhao Tuo shook his head with a smile and ordered, "Zhong Liyi, go down and tell Zhao Guang." Pull out the new giant guns of our army. Give the other side an insight and an insight."