The gap between the drawings and technology of Ge Bus provided by Cao Cao to Sun Ce and Zhuge Liang's original version is still very large.

Performance aside, the speed and difficulty of construction alone are much worse - Cao Cao has not yet figured out the advanced experience of standardized thinking and prefabricated parts assembly.

Therefore, even if you learn to build a car, in actual combat, you will first pull the army to the periphery of a certain city, camp and surround it, and then slowly cut down and build it, this kind of large equipment, it often takes ten days and half a month to put into battle. If the logging distance is long and the timber needs to be transported, it is even more laborious.

However, this natural defect of Cao Cao was forcibly and hastily corrected in the hands of Zhou Yu.

On the day when Hua Xin had just arrived in Moling and lobbied Sun Ce, after getting the drawings, Zhou Yu gathered craftsmen in Moling, felled wood, processed wood, and built, and specially unified the size of the mortise and tenon joints to ensure that the final assembly was more convenient.

However, Zhou Yu's improvement is not because he is smarter than Cao Cao, but because he has no choice:

He had imagined from the beginning that he was going to attack the empty Guangling, and he also knew that the Guangling City after Zhuge Liang's transformation of the Hangou Canal was an "island" surrounded by water on all sides, and Guangling had developed commerce and trade, and there were no forests on this "island" for the besieging party to cut down.

Therefore, the siege equipment and timber needed for the storming of Guangling City must have been prepared and transported in advance from other places, and it was impossible to take materials on the spot. Since he couldn't escape, Zhou Yu simply processed all the wood in Moling and then transported it over, which could be regarded as a crooked hit.

Before that, the sentinel detectives investigated and prepared for the war, and for nearly ten days, Zhou Yu's hand was not idle, and he had been asking the craftsmen to work overtime. From this point alone, it can also be seen that Zhou Yu's combat readiness and overall planning ability is good, and he knows that the tasks with a long cycle must be done in advance.

Because of this, he decided to assemble the Ge bus within three or four days after the attack.

Before that, Zhou Yu was not idle, and after camping and besieging the city, he sent people to destroy the trap in the south of the city. Several exploratory attacks were also organized to find out the strength of Liu Bei's army's defense.

In Zhou Yu's initial tentative attack, he didn't even bother to show his face to boost his morale and hit the enemy's morale, just so that Zhou Yu could sink deeper into the quagmire and then pierce it when the time came.

……

Until the third day of Zhou Yu's siege of Guangling South City, with the prototype of Ge Gong, it has gradually been built, and those tower-like siege equipment can be faintly seen from a distance of one or two miles.

Chen Dao, who was in charge of guarding the south gate, reported the situation to Chen Deng, and then Chen Deng hurriedly rode his horse to the south city tower to check and verify it with his own eyes.

"Ge bus? When did Sun Thief learn to build a Ge bus? Could it be that when our army and Yuan Shu's army were fighting, the scattered enemy rout leaked out? But Sun Thief didn't accept Yuan Shu's rout, and he didn't participate in the battle to destroy Yuan...... Could it be that the Cao thief and the Sun thief have communicated with each other? ”

After being a little nervous at first, Chen Deng quickly thought of the answer.

It's not that Chen Deng is smart, but after eliminating all other reasonable doubts, the remaining answer, no matter how unreasonable it seems, has no choice.

After accepting this fact, Chen Deng was quickly relieved. This weapon has been openly used by its own camp for more than two years, and so many enemies have seen it up close, and it is inevitable that someone will learn to look like it, and it has been kept secret for a long time.

And this thing was invented by the Zhuge brothers, after Chen Deng officially voted for Liu last year, he and Zhuge Jin have also worked together for so long.

Since Chen Deng knew that he had to undertake the defense of Guangling and carry the easternmost defense area, the two would often exchange tactical experience, and Chen Deng once specifically asked Zhuge Jin how to defend if he encountered the enemy and learned to use Ge bus to attack the city.

Zhuge Jin didn't even hesitate at that time, and directly reported some answers to the truth, which were nothing more than clever tricks for dealing with siege towers and other equipment in the siege technology of later generations.

At present, Chen Deng saw that Zhou Yu had used the Ge bus, so he immediately prepared in advance, and asked the soldiers defending the city to adjust the deployment of catapults and giant crossbows, preparing to surprise Zhou Yu.

"Move all the bed crossbows to the stacks on the side of the horse, and prepare to shoot sideways! Replace it with an iron feather arrow with a hook at the tail, tie a thick hemp rope, set up a pulley frame, and hang a thousand boulders! The trebuchet moved to the front of the horse's face! ”

A series of commands is very complicated, and it takes at least a day and a half to prepare, but compared to the assembly speed of the Ge bus on Zhou Yu's side, it is still fast. It wasn't until the next day that Zhou Yu finished assembling Ge's bus, and Chen Deng had already arranged it first.

……

Early the next morning, after assembling four Ge buses with amazing defensive power, the Jiangdong Army finally launched a general attack.

The Ge bus built by the Zhuge brothers at the beginning, it was still made of fine wooden boards, and Zhou Yu this time, many parts were only roughly flattened into square cross-sectional trees, which were thicker and more clumsy than the original, but the shape was similar.

From the perspective of defense, Zhou Yu's is more resistant to beating, because the wood is thicker in many places. However, in terms of the proportion of the center of gravity and stability, it is obviously inferior.

As the Jiangdong army attacked noisily, the cloud ladder and flying ladder approached the city wall at a rapid pace under the push and shoulder of the cannon fodder soldiers; The crossbowmen also approached the walls under the cover of the rattan shield and fired at the defenders.

The quality of the Jiangdong Army's crossbowmen is not bad, although there is no advantage in weapons, but the technology is excellent and the number is large.

After all, Zhou Yu gathered more than 20,000 siege troops on the frontal battlefield, and Chen Deng only had less than 5,000 people to defend the city, and the number of bows and crossbows was several times worse.

After some bloody attrition, the slow and cumbersome Ge bus of the Jiangdong Army finally gradually pushed closer to the city wall.

Eighty steps, sixty steps, every dozens of steps forward, there is often a little trouble, trembling and shaking, the ground is slightly uneven, and there is almost a danger.

In contrast, although Liu Beijun's trebuchet is also throwing stones to block, it is difficult to hit this kind of moving target, and the trebuchet is also more laborious to load, three or four rounds are missed, and the enemy's Ge bus is approaching to the minimum range-

The trebuchet is a high-throwing ballistic weapon, not a direct-fire weapon like a bed crossbow, and the enemy is too close to enter the shooting dead end.

But Chen Deng was on top of the city tower, and he saw all these details in his eyes, but he was not worried at all.

He was cultivated by Zhuge Jin, and his understanding of these principles was much deeper than Zhou Yu's, and he couldn't help but laugh secretly:

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"It seems that using the bed crossbow as the last killer weapon against Ge Gongche is really the right one. The trebuchet couldn't accurately aim at the enemy who was too close, but the bed crossbow just happened to shoot straight through, which was a shame on how Ziyu had come up with such a clever use in the first place. ”

Seeing that the Jiangdong Army's Ge bus had approached the city wall and stopped, the soldiers below began to flock to the car, rushed up along the internal rotating staircase, and finally put down the board that was buckled at the head of the city, Chen Deng finally gave an order:

"Order the bed crossbows deployed on both sides of the horse's face, and go all out to release the hook and arrow tied with hemp rope on the already full Ge bus! Aim at the top of the Ge bus and shoot the arrow! The planks are thin there! It's easy to get pierced! ”

At the same time as Chen Deng gave the order, hundreds of steps away in the distance, Zhou Yu was smiling from ear to ear.

"People say that Zhuge Jin is clever, and today I have returned it to him in his way! Let Liu Beijun taste the power of the Ge bus siege that they invented themselves! It's really retribution! The first time I pushed it up, I successfully leaned on the city wall, and there could be a smoother siege battle in the world! Chen Wu, Ling Cao, press the formation first! Let the soldiers be sure to use their lives! ”

Zhou Yu gave the order in high spirits.

Soon, from his point of view, he could clearly see that on the side behind Ge's car that was not protected by armor, rows of Jiangdong soldiers had already rushed up along the revolving ladder in the tower car. The soldiers at the front had already been assassinated by Liu Beijun's pikemen at the head of the city.

At this moment, a sudden change occurred.

"Buzz" a few sounds, the left and right sides of the city wall protrusions, that is, the side buttress of the "horse face", suddenly flew out a few spear-shaped, iron giant arrows, "click" pierced through the wooden plank and penetrated the upper part of the Ge bus, and some even pierced left and right, pierced through the left plank and then nailed to the right board.

The penetration force of the three-bow heavy bed crossbow within dozens of steps is extremely terrifying, and the heaviest bed crossbow in the late Han Dynasty can even use the pull of seventy human forces or eight oxen to twist the strings, and the half-foot-thick wooden board cannot carry such kinetic energy.

Zhou Yu was taken aback by this kind of steel giant arrow from afar, and then his mood calmed down a little.

"What the hell is Chen Deng? Just now I used a trebuchet to smash it, hoping to smash the Ge bus, but it is understandable, but now what can I do if I change the power of heavy equipment to iron arrows and release it? It's nothing more than a hole in Ge's bus, if you're unlucky enough to shoot someone, you'll die, it's not a big deal. What else? ”

Zhou Yu's mood was slightly calm, he felt that it was just killing and injuring individual soldiers, and if he was really shot by such a terrifying weapon, he could only blame himself for his bad life, it was all providence.

However, he soon discovered that there were more details that were even more off.

"What's behind these arrows? Why is there such a thick rope? Yes! Could it be that the defenders were counting on the crossbow bolts to tie the Ge bus and then drag it sideways to the crowd and pull the car down? ”

Just when Zhou Yu was in a daze and thinking about the operation of the defenders, the crossbow soldiers at the head of the city had already done the last step under the command of Chen Deng.

"Put the rope on the arrow to the pulley next to the wall, and push the huge stone at the other end of the rope directly down the inside of the wall!"

The guards quickly completed the operation, and with a "bang" pushed the huge stone tied to the other end of the rope down the city wall, and the rope was dragged and fell by the boulder, but it was completely tense one or two feet away.

The boulder was still a foot or two away from the ground, and after the rope was tightened, the iron crossbow bolt that ran through the Ge bus was subjected to a violent lateral pull, and it was the point with the highest torque acting on the roof.

The weight of Ge's car, plus the dozens of heavily armed soldiers on the stairs of a three- or four-story building, the total weight is more than 10,000 yuan. It is far heavier than the large stone that fell from the top of the wall, if not ten times.

But those who have built blocks know that adding a horizontal vertical moment to the top of a very high dangerous building can have the effect of dialing thousands of pounds in four or two.

What's more, the boulder exerts not a static force through pulleys and ropes, but a pre-accelerated impact force.

Say that a friend who likes to do Thai massage can understand the truth: it is like you can bear an 80-pound young lady walking around on your back, but if this 80-pound young lady jumps down from the second floor and steps on your back, then no matter how fat you are, it is not easy to step on it.

There was a loud bang, and one of the four Ge buses was instantly dragged to the ground by this huge lateral moment. In fact, after the center of gravity of the Ge bus deviates from its base, the rest of the work can be completed by its own weight. The heavier the itself, the heavier the fall.

Dozens of soldiers on the spiral staircase inside the car body also had no ability to resist and fell directly with the car body and died directly in the car.

This scene instantly stunned Zhou Yu.

And Chen Deng at the head of the city is not satisfied.

I saw him reprimand a little angrily: "What's the matter? Why didn't the other three fail? Hurry up and keep shooting, and add another thick hemp rope to tie it up! All the soldiers dragged the hemp rope to me to strengthen! If it doesn't work, pull the hemp rope and jump off the city! Anyway, you can't fall to death if you grab the rope! Be sure to bring down the other three Ge buses that were hit by arrows! ”

After a hasty remedial command, hundreds of defenders went up to fill their positions, like a tug-of-war, and finally pulled the other three crumbling Ge buses to collapse.

The soldiers of the Jiangdong Army, who had no time to escape in the body of the car, also fell to the ground together with the collapsed tower car, and even if they couldn't fall to death, they would be crushed to death.

Seeing this scene, Chen Deng finally took a long breath and slapped the battlements and laughed: "I haven't even learned the essence of Ge bus, and I dare to use it indiscriminately!" Sure enough, it's not a good death! This kind of top-heavy thing is made, don't pull down who you pull!

When you Ziyu told you, the upper part of the car body would rather be less effective against arrows, and it must be made of light and thin wooden boards, and the load is enough, is there no target!

Just to lower the center of gravity! And in case the top is hooked, it can't stand the force, and if you pull thousands of pounds vigorously, the hooked part will shatter by itself, and it will not cause the whole vehicle to topple. Such an unstable car, the roof is still so strong, look for death! ”

A group of people who have not learned the principle of leverage, pulley, and moment algorithm have also drawn tiger dogs to imitate others to build Ge buses, what is this not looking for death?

While Chen Deng was proud, Zhou Yu in the distance was already dumbfounded. He worked hard to create the sharp weapon that Cao Cao copied from the Zhuge brothers, but he was directly cracked by the second kill. In the four cars, there were only one or two hundred soldiers who were directly stoned to death and fell to death, and more importantly, the siege morale of the Jiangdong Army was completely destroyed.

The siege weapons on which they had high hopes were all wiped out in an instant, who could withstand such a morale blow?

The other cloud ladder soldiers and flying ladder soldiers of the Jiangdong Army also quickly flinched and confused, and as the casualties became larger and larger, Zhou Yu could only grit his teeth and withdraw his troops.

"How could Chen Deng be so good at guarding? Why do I fight so badly every time? Zhou Yu couldn't help but start doubting life.

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