Last year, after Cao Cao personally led an army of 100,000 to Fancheng, he was unable to break through the defense system formed by Guan Yu according to the Han River.

Later, Cao Cao's general Zhang Liao came up with a way to allow Cao Wei's army to cross the Han River.

That method was to take advantage of the cavalry's high mobility and cross the Han River in winter when the water in the lower reaches of the Han River was scarce.

Although at that time, because of the obstruction of the Bai Yu soldiers led by Zhao Yun, Zhang Liao's plan did not succeed.

But at that time, discerning people knew that with the passage of time, Zhang Liao's plan was completely feasible.

Because the Han River is too long, no legion can send heavy troops to guard every part of the Han River.

The lower reaches of the Han River, which is long and on the verge of depletion, are a natural place for highly mobile cavalry to play to their strengths.

When the time of day changes, Han Shui, which was originally regarded as the lifeline defense line of Guan Yu's army, may also become an accomplice in taking the lives of the Han army.

At the beginning of Zhang Liao's assault battle, Guan Yu was also a personal experiencer.

Therefore, when he knew that more than 10,000 Wei cavalry troops were going downstream, he immediately guessed the purpose of the more than 10,000 cavalry.

It's already October, and there are two months left at most, and the flow of Han water will be greatly reduced.

And in these two months, even though Guan Yu had tens of thousands of troops in his hands, it was still very difficult to take Fancheng.

After Guan Yu guessed the purpose of the more than 10,000 cavalry, he also deduced what they wanted to do next.

The current situation is different from the beginning, and now behind the more than 10,000 cavalry troops, there are no tens of thousands of Wei infantry troops.

Therefore, the more than 10,000 Wei cavalry wanted to cross the Han River, definitely not to help the Wei army behind them open the way, let alone to attack Xiangyang City.

The greatest utility of the cavalry is always in the field.

After ruling out these two possibilities in a row, the true purpose of more than 10,000 cavalry troops is self-evident.

That is to use the field ability of the cavalry army to cut off the grain route of the Han army.

Although Xiangyang is on the south bank of the Han River, there is still some distance between Xiangyang and the Han River.

That distance is the grain road in Xiangyang City that escorts grain and grass to the port.

Even because the Northern Expedition was launched immediately after the autumn harvest, the grain and grass from the counties of Jingzhou were still on the way to Xiangyang.

After the Han River, there are a large number of vast plains.

Once the more than 10,000 cavalry troops crossed the Han River and entered the back of the Han army, most of the people who escorted the grain and grass were auxiliaries or civilians who did not have much combat power.

They can't stop the charge of the Wei army's iron cavalry, and the Han army's grain route is very dangerous.

The instability of the grain road, let alone whether the grain and grass are safe or not, is a major blow to the morale of the army.

But after realizing this, Guan Yu did not panic.

I have to say that since the day he started the army, all the arrangements of the Wei army have been very proper.

Avoiding without fighting and dividing the troops to defend it, this made Guan Yu's army unable to surround Fancheng as it did back then, and then marched directly towards the hinterland of Nanyang.

The actions of the Han army were predicted in advance, so that more than 10,000 cavalry troops were sent to Fancheng in time to support.

When the more than 10,000 cavalry troops arrived in Fancheng, they did not feel helpless because of the barriers built by the Han army, but thought of repeating their old tricks to find a breakthrough from the downstream.

The various arrangements of the Wei army can be described as well-organized and interlocking.

This is the performance that Dawei should have.

Cao Wei regarded the Han as the number one enemy, and the same Han also regarded Cao Wei as the enemy of life and death.

Cao Wei can be regarded as a great enemy by the Han Dynasty, so of course they rely on not only strong national strength, but also a talent pool that is proud of the world.

Now Cao Wei's performance is in line with their true level.

Perhaps Cao Wei had contempt for Liu Bei and Sun Quan because of his strong national strength before.

This is very normal, before the Tang and Song dynasties, any force that could completely occupy the north had the confidence to be proud of the world.

But this

It seems that because of Cao Ren's death, it has begun to disappear.

The battle of Xicheng woke up the people up and down Cao Wei.

The forces that can be given the title of "Han" are always worthy of their attention.

When Cao Wei began to face up to his opponents, it was the time when their forces slowly manifested their terror.

Talents, grain and grass, and troops, Cao Wei has never lacked them.

But how can Guan Yu be an easy person?

Since Cao Wei's talents will continue to make appropriate responses according to the current situation, then Guan Yu will also make countermeasures relatively.

What he told Ma Liang to do was his countermeasure.

Guan Yu asked Ma Liang to release the news that the Han army was going to repair the weir in order to confuse the more than 10,000 Wei cavalry troops downstream.

Weir refers to a water conservancy project built on an inland river that can both store and drain water.

When the Seventh Army was flooded, there were many speculations about how Guan Yu did this.

Many people believe that Guan Yu was planning very early on, spending a lot of manpower and material resources to build a weir to deliberately store water, and then carried out a water attack on the embankment.

But the real situation is that there was a rare heavy rain that year, which caused a natural flood that "overflowed the Han River and harmed the people".

In that case, Guan Yu, who was good at taking advantage of the time of the day, took the opportunity to start building a weir and channeled the flood that was about to spread everywhere to the station of Yu Ban and the others.

This made Yu Ban and others trapped by the flood, and he took the opportunity to attack by boat, which finally led to Yu Ban and others having no choice but to surrender.

At the beginning, Guan Yu did order people to build a dam, but in the face of natural disasters, the dam built by Guan Yu only played a role in guiding the enemy.

It was originally an excellent example of a famous general who was good at taking advantage of the time and place, but it was rumored by many people that Guan Yu deliberately did it from the beginning.

This is actually a means for some people in the north to smear Guan Yu.

Because the flood also hurt many people, the northern officials, who were not angry with Guan Yu for winning this great victory, planted all the blame for this natural disaster on Guan Yu's head.

This rumor is so widespread in the north that it has almost been taken as the truth.

But fortunately, it was the rumors of those people that gave Guan Yu the means to counter more than 10,000 Wei cavalry today.

Because in the rumors, those who slandered Guan Yu undoubtedly exaggerated the role of the dam, in this case, don't blame Guan Yu for the plan.

Now is not Zhang Liao's time, but now there is a Han army on the north bank of the Han River!

After Ma Liang listened to Guan Yu's instructions, he also understood Guan Yu's deep meaning, so he had to step back and convey Guan Yu's orders.

Before Ma Liang stepped back, he inadvertently caught a glimpse of the picture on Guan Yu's table.

He saw that the thing on the picture was very strange, like a formation, but if he looked closely, it didn't look like it.

This made Ma Liang's mind feel doubtful.

Is this what the general has been studying for the past few days?

He has never seen how he reads military books.

But although Ma Liang had doubts in his mind, his body did not hesitate at all, and he had already walked to the door of the big tent.

But at the moment when Ma Liang was about to walk out of the big tent, Guan Yu's coughing sound that seemed to be deliberately suppressed sounded beside him.

The cough made the color of doubt in Ma Liang's mind suddenly dissipate, and all that was left was worry and a trace of uneasiness about the future.

So after returning to his main account, Ma Liang first summoned a group of subordinates in Jingzhou to finish the task assigned by Guan Yu, and then he summoned another clansman.

Ma Liang quickly wrote a secret letter on the table, and asked the henchman to hurry up to Wudang by boat.

After this henchman left, Ma Liang looked at the back of his departing henchman with a worried look, and he secretly thought in his heart:

I hope everything is unfounded!

...

After Ma Liang left, Guan Yu, who had just stopped coughing, continued to study the picture on the table.

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With the large array above that was constantly being transformed by him, Guan Yu's face gradually appeared with joy.

In Guan Yu's mind, a scene of a battle between the two armies had already appeared.

Then Guan Yu set his eyes on the distance between Hanshui Port and the Han army camp.

His eyes slowly turned cold.

Seeing the moves, so as to guide the enemy in the direction he wants, this is his exclusive combat art.

Guan Yu is no less familiar with the combat methods of the cavalry than any general in the world.

But in order to be as foolproof as possible, Guan Yu immediately immersed himself in his thoughts and began to deduce the big battle of the day.

With the fate of the country, how dare you relax for a moment?

It's just that what he doesn't know is that as his mind continues to drain, the look on his face becomes more and more pale.

...

Guan Yu's order to Ma Liang was: "Release the news and repair the weir again."

To whom is the message out? Of course, it was for the more than 10,000 Wei cavalry troops who were preparing to cross the river in the lower reaches.

From this order, it can be seen that Guan Yu's real purpose was definitely not to repair the weir, but to confuse the Wei army.

But if you want to confuse the more than 10,000 Wei cavalry troops, then some necessary actions still have to be done.

After all, it was impossible for Ma Liang to directly send someone to tell the more than 10,000 Wei cavalry that they were going to start building the weir next.

Ma Liang's order, who was the assassin of Jingzhou, was soon transmitted to the city of Xiangyang on the south bank of the Han River, and soon a large number of people began to assemble on the south bank of the Han River.

Even on the north bank of the Han River, many auxiliary soldiers began to move upstream to a certain part of the Han River under the summons of the subordinates of the Jingzhou Assassin History.

And when a large number of people and materials began to gather somewhere in the upper reaches of the Han River, the news was quickly discovered by the spies of more than 10,000 Wei cavalry troops.

Although the Wei cavalry soon reached the lower reaches of the Han River, they could only wait for the time to come because the amount of water in the lower reaches of the Han River was still quite turbulent.

During this time, Cao Tai sent a number of spies to investigate the movements of the Han army.

As a result, it was okay not to investigate, but the latest move of the Han army startled Cao Tai after a search.

The Han army actually wanted to build a dam upstream!

At this time, the purpose of the Han army to build the weir was self-evident, it was to store water.

So why did the Han army store water?

After learning the news, Cao Tai immediately summoned Sima Yi and Jiang Ji, two think tanks.

And Sima Yi and Jiang Ji both had a heavy look on their faces after knowing the latest measures of the Han army.

Because of the rumors circulating in the Northland, in the hearts of all Cao Wei's ministers, Guan Yu's intention to build a dam makes it difficult not to connect it with the water attack.

And most importantly, under the speculation of Sima Yi and Jiang Ji, Guan Yu is currently building the weir not for Fancheng, but for them who want to cross the Han River downstream.

It's already October, and the rainy season has passed.

In addition, although the construction of weirs is the specialty of southerners, it is a time-consuming thing after all.

After the dam of the Han army was repaired, the amount of water in the Han River had already been reduced, and it was no longer a threat to Fancheng.

Therefore, Guan Yu is building a dam now, for the sake of them downstream.

In the dry season of the Han River, it may not be difficult for tens of thousands of cavalry troops to take the opportunity to cross the Han River.

But their crossing of the Han River was a deep attack on enemy territory, and at the same time it was a very risky thing.

Once they were crossing the Han River, the Han army upstream suddenly destroyed the dam and released the Han water that had been stored for a long time.

Then, even if these tens of thousands of cavalry troops are all buried under the water when they cross the Han River, the military spirit of the tens of thousands of cavalry troops will definitely collapse when they see that the back road is cut off.

What is the use of tens of thousands of cavalry troops with no back road and no way back, even if they barely cross the river?

In case Guan Yu drew part of the army to cross the river to counterattack the tens of thousands of cavalry, then their tens of thousands of cavalry would be in danger.

During the Battle of Weishui, didn't the soldier Han Xin use similar tricks?

Because the bitter lesson of flooding the Seventh Army was not long ago, when Sima Yi and Jiang Ji realized this, they both informed Cao Tai of their guesses.

And when Cao Tai knew Guan Yu's true purpose, his expression was not as calm as Sima Yi and Jiang Ji.

When the Seventh Army was flooded, he who followed Cao Ren had seen the flood with his own eyes.

Compared with fire, for Cao Tai, who is a person from the north, water is what he fears more.

Therefore, under the threat of Guan Yu's water attack, Cao Tai immediately dismissed his plan to cross the Han River in the coming day.

After all, this time is different from the past, when Zhang Liao dared to lead thousands of tigers and leopards to rush to the opposite bank, because there were 100,000 Wei troops on the north bank to guard his back.

But now Cao Tai does not have such a strong backing, and under the threat of Guan Yu building a dam, of course he does not dare to act rashly.

Now who in the world doesn't know that Mi Yang is good at fire, Guan Yu is good at water?

This pair of Weng sons-in-law can be said to play the two natural nuclear bombs of water and fire clearly.

It can be said that Guan Yu's move completely hit the seven inches of the Wei army, which lacked warships.

It's just that although he dismissed the plan to cross the river to attack the south bank of the Han River, Cao Tai still felt a little unwilling.

When tens of thousands of cavalry troops came to Fancheng, they couldn't just wander outside Wudang City as they did at the beginning.

Seeing the unwillingness on Cao Tai's face, Jiang Ji came up with a plan for him:

"If you can't cross the river and attack the thief's food route, why not harass along the river?"

Hearing Jiang Ji's plan, Cao Tai's eyes lit up.

Yes, although Fancheng is close to the Han River, it is not directly built on the edge of the Han River like Wudang.

The nearest port on the Han River is more than ten miles away from the Han army camp.

And this distance of more than ten miles is the grain transportation channel of the Han army on the north bank.

He could take advantage of the high mobility of the cavalry and send troops to constantly patrol the banks of the Han River, and once he saw the grain fleet of the Han army on the shore, he could attack and even burn it.

This method may not be as effective as directly crossing the Han River, but if this continues, the Han army will definitely not be able to stand it.

Cao Tai felt that this plan was very good, so he listened to Jiang Ji's strategy.