Many people believe that Guan Yu's launch of the Battle of Xiangfan on the historical line was a self-talking military act and a unilateral Northern Expedition, so as to conclude that the second master's military ability and strategic vision were very bad.

But in fact, as long as you look through the historical materials a little, you will know that the real purpose of Guan Yu's attack on Xiangfan was actually to respond to the battle of Hanzhong, but later things got out of control.

Well, after all, the historical materials are boring, and the records are relatively scattered, and many people are not happy to turn them, but just ask a question - do you remember "Longzhong Pair"?!

What are the preconditions for the Northern Expedition in "Grand Pair"?!

All according to Jing and benefit, wait for the world to change.

At this time, the world has not changed at all, Cao Cao is still the powerful Cao Cao, and Sun 100,000 is still the Sun 100,000 who can't beat Hefei.

Again, what is Zhuge Liang's route plan for the Northern Expedition?!

Liu Bei led the people of Yizhou out of Qinchuan, and Guan Yu led the people of Jingzhou to Xiang Wan and Luo Xiangyang were not in his hands, how could he send troops to Wancheng and Luoyang? !

Therefore, Guan Yu's battle of Xiangfan is really not a Northern Expedition, from the timeline, it is a battle of strategy.

Even taking a step back, Guan Yu wanted to attack Xiangyang, but it was also to complete the strategic policy of "Northern Capture of Hanchao" planned by Zhuge Liang in "Longzhong Pair", and it was not the Northern Expedition at all.

Moreover, it is really a good move to let Guan Yu send troops to Xiangfan to reduce the military pressure in Hanzhong during the battle of Hanzhong, after all, Xiangyang is already very close to the hinterland of the Central Plains, and it is impossible for Cao Cao to ignore this threat.

Especially the titular Son of Heaven of the Han Dynasty is in Xuchang, this political signboard, although Cao Cao can not do with it now, but he cannot be handed over to Liu Bei.

But this time to send troops to respond is actually not easy to grasp.

The transportation in these years is inconvenient, and the message is not conveyed in a timely manner, so when to send troops to Xiangfan to maximize the benefits, this needs to be judged by Guan Yu himself.

Guan Yu could actually launch the Battle of Xiangfan before Liu Bei, and attract Cao Cao's army in Guanzhong in the Xiangyang area to support nearby, so that Liu Bei would be much easier to launch the Battle of Hanzhong again.

Guan Yu thought so from the beginning, he wanted to launch an attack on Xiangyang as soon as possible after this year's autumn harvest.

However, the problem of grain and grass has always been a problem that cannot be bypassed.

The military rations are sufficient, but they are not much, and according to wartime calculations, they may only last for a few months to half a year.

And attacking a fortified city like Xiangyang, or launching a campaign in advance, in order to attract the rescue of the main force of Cao's army, relying on about half a year's grain reserves alone is absolutely not enough.

The geographical location of the hinterland of the Central Plains is too important, once Guan Yu breaks through the Xiangyang defense line and threatens Luoyang, he can break through to the Central Plains and retreat according to Xiangfan, and Cao Cao's territory may be divided into two.

It's not that it can't be contacted, as long as Guanzhong and Liangzhou are not lost, Cao Cao can also contact Guanzhong through the Bingzhou Mountain Road, but after all, it is not as convenient as Sili and Sanfu, and the difficulty of transferring troops will become very large.

Therefore, Cao Cao will definitely fully support the Xiangfan defenders, and even would rather give up Hanzhong to ensure that Xiangfan is not lost.

Therefore, if Guan Yu launches the Battle of Xiangfan in advance, it is likely that there will be a possibility of a long-term confrontation with Cao's army. But Guan Yu's grain and grass reserves were not enough to complete such a long confrontation.

There is also a countermeasure, that is, when the battle in Hanzhong is relatively stale, Guan Yu suddenly sent troops to Xiangfan.

At this time, most of Cao Cao's army was in the Guanzhong area, and Guan Yu's sudden attack on Xiangfan was likely to have a surprise effect.

The importance of the hinterland of the Central Plains forced Cao Cao to take care of both sides, fight on two fronts, and make trade-offs between Hanzhong and Xiangfan.

This is a question that anyone with a normal brain and military understanding will choose to defend Xiangfan.

After all, Hanzhong was lost, but it was just to give Liu Bei a guarantee to defend Yizhou, and there were Qishan, Guanzhong, and Liangzhou out of Hanzhong, and Liu Bei was not so easy to call.

But as soon as Xiangfan was lost, the hinterland of the Central Plains would be completely exposed in front of Guan Yu.

In this way, Guan Yu can also achieve the purpose of containing Cao Cao's army and helping Liu Bei reduce the pressure.

The advantage of this method is that Guan Yu can decide the time of advance and retreat independently, and there is no need to confront Cao Jun for a long time, but the disadvantage is that if Guan Yu does not grasp the fighter opportunity well, he attacks when he should not attack, and retreats when he should not retreat, which is likely to cause Liu Bei's defeat in Hanzhong.

After all, there is no telephone telegram in these years, Liu Bei can't need Guan Yu to send troops today, Guan Yu will send troops directly, the news transmission is not so fast, it is more to test Guan Yu's ability to predict the current situation.

At this point, Guan Yu actually doesn't have much confidence.

In this kind of strategizing, the decisive victory is thousands of miles away, not to mention that Guan Yu is not sure, even if Liu Bei comes, he is also numb, probably only Zhuge Liang, Cao Cao, Sima Yi and a few other people have this ability.

And it requires a lot of intelligence to analyze and judge.

But now, Liu Bei's letter was very hasty, and the letter from August told Guan Yu that he planned to start the army in October, so he would leave so much time for Guan Yu to plan a battle to attack Xiangfan, and Guan Yu was even more embarrassed and anxious.

Therefore, Guan Yu could only find Zhang Xi, and the two of them pondered and pondered what to do about this matter.

Xu Shu guarded the barbarians in Wuling County, and Wen Ping was in the public security to guard Jiangdong, these two people couldn't leave for a while, Ma Liang's political and strategic ability was extremely good, but for this kind of military operation, he could probably only sit in the rear and be responsible for the transportation of grain and grass.

Guan Yu looked at these adjutants in Jingzhou and found that there seemed to be only one Zhang Xi who could help find a way.

It's just that Zhang Xi has a lot of concerns about this matter.

In this place of Xiangyang, it should be beaten, after all, it was the lord who gave the order.

But how to fight and when to fight, Zhang Xi is still a little unsure.

After all, in the battle of Xiangfan in history, Guan Yu was able to make a reputation as "Megatron Huaxia", in addition to his own ability and preparation, Tianshi also helped a lot.

But now the historical line has changed, and this year is only 21 years of Jian'an, not 24 years of Jian'an. The torrential rain that caused the entire Han River to swell may not have happened.

Without Tianshi's help, Guan Yu would not have been able to flood the Seventh Army at all. Then you can only fight hard.

There are good and bad things in this matter.

Needless to say, in the face of Xiangyang and Fancheng, two fortified cities that rely on each other, and with Cao Cao's full support, the difficulty of conquering Xiangfan has instantly increased a lot, and it is necessary to defeat the reinforcements sent by Cao Cao in the field battle, and don't expect such a thing as flooding the Seventh Army.

The advantage is that it can prevent Guan Yu from hitting the head, and he will not retreat.

In the battle of Xiangfan in history, Guan Yu was to relieve the pressure on Liu Bei, who confronted Cao Cao in Hanzhong.

But Guan Yu probably didn't expect that Cao Cao would give up Hanzhong so resolutely and decisively, nor did he expect that a heavy rain flooded the Seventh Army without bloodshed, and he had almost no losses, and directly killed more than 30,000 reinforcements led by Yu Ban to rescue Xiangfan.

The situation is so good, seeing that these two places in Xiangfan can be captured with more effort, and no one will give up easily.

Originally, it was just to contain it, but as a result, Guan Yu was stunned to become the main attack, and when the battle of Hanzhong had ended, he was stunned to stay under Xiangfan City for too long, and wanted to conquer Xiangyang.

And then well. Well, the result is known to everyone.

So, this matter is not without benefits, at least it can make Guan Yu clear the priorities, and the matter of attacking Xiangfan is just a response.

Therefore, Zhang Xi's advice to Guan Yu is to wait first, at least wait until after the autumn harvest, and then decide whether to send troops to Xiangfan according to the battle situation in Hanzhong.

On the one hand, after the autumn harvest, there can be new grain on the market, according to the growth of new seedlings this year, it should still be a bumper harvest year, and the grain and grass reserves of the government treasury can be increased.

On the other hand, if the Hanzhong attack goes well, then maybe there is no need for Guan Yu to enter Xiangfan.

After all, we are just responding, there is no need to steal the limelight with the lord.

After listening to Zhang Xi's suggestion, Guan Yu stared at Zhang Xi with dead eyes, motionless, just like the statue of Emperor Guan Temple.

Although Zhang Xi is still a little scared, but. Don't forget, in the entire "Art of War", Zhang Xi remembers one sentence: soldiers, the major affairs of the country, the place of death and life, and the way of survival, must not be ignored.

This sentence is the only word that Zhang Xi remembers, and it is also the sentence that Zhang Xi has felt the most over the years.

If you just stare at me again, this kind of thing that concerns the safety of tens of thousands of soldiers and hundreds of thousands of people, we can't give in easily.

What Guan Yu is thinking, in fact, Zhang Xi knows - the second master wants to be a veritable Xiangyang Taishou.

But the matter of Xiangyang is really not so simple, with the current strength of the entire Jingzhou, it is impossible to carry a country with one state, and he Cao Cao is not the stupid white sweet of Zhu Yunwen, he still needs to be cautious.

What's more, the neighbor to the east is not peaceful

So, this time Zhang Xi is top, but he doesn't let go, and insists on waiting at least until after the autumn harvest.

And after the autumn harvest, it doesn't mean that Guan Yu should send troops immediately, but it is still necessary to wait for Liu Bei's progress in Hanzhong to judge when to send troops, as for how to send troops, who will fight with the army, and who will stay in Jingzhou to organize defense and logistics, these also need to be discussed again.

Zhang Xi's suggestion was to wait until after the autumn harvest to summon Pan Jun, Xu Shu, Wen Ping and others to Jiangling to participate in the military meeting.

The second master was not satisfied, but Zhang Xi insisted so much, and the second master couldn't help it.

After all, the second master could no longer send troops to attack without sufficient support.

The current second master is not the general who charged under Liu Bei's account before, he guards one side alone, not only to ensure the peace of the party, but also to do whatever he wants for the cause of his eldest brother.

Anyway, there are still about two months to go, and the second master still has some patience, so he decided to follow Zhang Xi's advice and wait for the time being.

By the way, I also asked Zhang Xi to urge Zhang Wei to pay close attention to the matter of ore mining, and the coal and iron ore in the army have not been enough recently.

Hawkers, let's do this, just urge it.

(End of chapter)