"Prime Minister, Yizhou is tired, and Qinling is even more of a moat across Guanzhong and Hanzhong."

Liu Yu is still persuading Zhuge Liang bitterly.

"The terrain of Hanzhong today is very different from the terrain of the Han Gaozu period."

"The reason why Liu Bang, the ancestor of the Han Dynasty, was able to invade Guanzhong in the north, and finally succeeded in seizing the Qianli Plain in Guanzhong and achieving the cause of hegemony, was because the Hanzhong waterway at that time could go directly to Guanzhong."

"Now that the waterways have been cut off, all food has to be transported by land."

"The amount of grain, grass and hardships spent in this is a hundred times greater than in the era of Han Gaozu."

"And the enemy that our Shu Han faces is several times stronger than the enemy faced by Han Gaozu."

"At that time, Han Gaozu faced only Yongwang Zhanghan, Zhai Wang Dong Peng, and Saiwang Sima Xin, three princes and kings."

"Xiang Yu has divided nineteen princes and kings, and these three princes and kings cannot be compared with the current Cao Wei at all."

"These three princes and kings still have their own ghosts, and they were each defeated by Han Gaozu."

"But what about Cao Wei now? It not only dominates the northern states, but also has established a stable rule in Guanzhong, and the people's will is stable. ”

"In addition, with Sima Zhongda sitting in Yongliang, the strength of the Yongliang army should not be underestimated."

"Cao Wei is now full of soldiers, it can be said that he is strong, if he wants to defeat Cao Wei, he thinks that he has no chance in a short time, we should wait for the opportunity and wait for the opportunity."

Zhuge Liang closed his eyes in pain, didn't he know that what Liu Yu said was the truth.

After Liu Bei captured Hanzhong, Zhuge Liang discovered that the geographical environment of Hanzhong had undergone earth-shaking changes.

In that year, Han Xinming repaired the plank road, darkened Chen Cang, went north from Hanzhong, and went north to capture Guanzhong.

The one who walked was Chencang Road, and the original Han River passed through Chencang Road, and Han Xin was able to transport grain by water in Chencang Road.

This is the most important reason why Han Xin was able to capture Guanzhong.

However, the Wudu earthquake a few decades later completely diverted the Hanshui, resulting in the Jialing River seizing the road, and the Chencang Road and Qishan Road could no longer be navigated.

After Zhuge Liang discovered this problem, he immediately realized that Longzhong was flawed.

If you want to take Guanzhong from Hanzhong to the north, it will be extremely difficult, unless someone is restrained in other directions.

Fortunately, Jingzhou was still in the hands of Shu Han.

It's a pity that after Liu Bei just became the king of Hanzhong, Guan Yu carelessly lost Jingzhou, causing Shu Han to attack Cao Wei only through Hanzhong to the north.

But this road is a hundred times more difficult than in history, and even so, Zhuge Liang has gone against the sky again and again.

However, he repeatedly failed in the logistics of transporting grain and grass, and finally was dragged to death by Sima Yi in Wuzhangyuan, and the problems encountered were also because of logistics and transportation problems.

If Hanshui does not change its course, presumably with Zhuge Liang's genius, even if he can't recover the Central Plains, he can at least capture Guanzhong for Shu Han.

Zhuge Liang's face was full of pain, thinking that he could not restore the Han Dynasty and could not fulfill the wishes of the first emperor, Zhuge Liang's heart was like a knife, and he couldn't sleep at night.

How could he not know that he was going against the sky, but in order to repay the kindness of the previous emperor, even if he was full of heart and brain, he did his best.

"Is the Great Han really going to die at our hands?"

Zhuge Liang thought of his long-cherished wish that he had not completed, and then thought that he was seriously ill, and maybe after that, he could no longer fight for thieves, and couldn't help but burst into tears.

He died before he left the school, which made the hero cry.

Liu Yu saw Zhuge Liang crying, and he only felt extremely sad in his heart.

The destiny of heaven is like this, even if Zhuge Liang is as wise as a demon, he will not be able to reverse the general trend and go against the sky after all.

But seeing Zhuge Liang in such pain, Liu Yu couldn't bear to let Zhuge Liang leave with regret after all, and suddenly a flash of inspiration flashed in his mind, and he said in a strong voice:

"Prime Minister, we still have a chance, we still have a chance to revive the Han Dynasty."

Zhuge Liang raised his head suddenly, his eyes were still slightly red, but his eyes were like falcons, staring at Liu Yu deadly, his face full of expectation.

Liu Yu took a moment, sorted out his thoughts, and said slowly:

"If you want to revive the Han Dynasty and restore the Central Plains, the first goal is to recover Guanzhong."

"But the Qinling Mountains are like a moat, straddling between Guanzhong and Hanzhong, which greatly hinders the pace of our army."

"Since this is the case, our army must find a way to cross the Qinling moat."

"The prime minister took Qishan Avenue before, although the road was quite smooth, but after all, it was still a long way."

"In this round trip, a lot of grain and grass will be consumed on the way."

"But if our army does not go to the Qinling area, but directly attacks the Longxi area where Cao Wei's troops are weak, it will have a lot to do."

"Suddenly appeared, and then a successful blow, quickly cut off the connection between the counties of Longxi and Guanzhong, then Longyou will be owned by my Han from now on."

Zhuge Liang's eyes lit up and said:

"What is the trick of Daoxing, so that our army can bypass the Qinling Mountains and enter the hinterland of Longxi?"

There are many mountains in Shu, and the Qinling Mountains are the hurdles that Zhuge Liang can't overcome.

Before the first Northern Expedition, he was constantly thinking about whether he could bypass this moat.

But after thinking about it countless times and asking many locals for questioning, Zhuge Liang finally found that if he wanted to go on a northern expedition, he had to cross the Qinling Mountains.

Listening to Liu Yu's tone now, it seems that there is a way to bypass Qinling, Zhuge Liang only feels very energetic.

If this is the case, then Dahan is really hopeful.

But the next two words that Liu Yu spit out made Zhuge Liang stunned for a long time.

"Plateau!"

Plateau? What plateau? Is there still a plateau near the Qinling Mountains?

Zhuge Liang thought about it for a long time, but he couldn't understand what Liu Yu meant.

Liu Yu began to draw a map on his toes under the tent.

Zhuge Liang also stood up and looked down at Liu Yu to draw the terrain around Shuzhong one by one.

After waiting for a cup of tea, Liu Yu finally drew what he expressed.

Subsequently, Liu Yu pointed to the west of Shu Han, that is, the Qinghai-Tibet Plateau in later generations, and said:

"Prime Minister, please look here."

"Today's plateau area is just a gathering of Qiang tribes, and these Qiang Hu are called Fa Qiang and Tang Xuanhu."

"Faqiang is based on Bayan Kala in the east, Kashmir in the west, the Western Regions in the north, and poison in the south.

"If you cross the plateau and Yizhou, protect its rock resistance, the tribes of the West and Western Regions, Fu Huqiang in the north, form a good Sun Quan outside, and repair politics inside."

"When there is a change in the world, a general will be ordered to go out of the plateau to attack Longxi, and the prime minister will personally lead the people of Yizhou out of Guanzhong."

"Didn't the people of Longxi look at the wind and descend to eat pot pulp to welcome the prime minister? If this is the case, then the Han dynasty can be prosperous, and the Central Plains can be restored. ”

That's right, what Liu Yu wants to say is to save the country with curves.

From the southern central zone, train a unique Wudang flying army, and then enter Tibet.

Conquer the Qianghu on the plateau, organize and train into an army, and also enrich the population of Shu Han.

After that, he strengthened his rule on the plateau, and waited for Cao Wei to change, so he sent troops from the plateau to bypass the Yongliang heavy army hoarding place in Guanzhong.

Directly attacked the weak defense of Cao Wei in Longxi, and then Zhuge Liang personally led the army and attacked Guanzhong at the same time.

Under the attack from both sides, Cao Wei must be unable to defend.

And Longxi is connected to Shu Han, and the two armies echo each other, and the probability of success is very huge.

Liu Yu was beaming proudly, but Zhuge Liang looked at the map on the ground, but frowned and said nothing.

After a long time, Zhuge Liang raised his head, his eyes were gloomy, and asked Liu Yu:

"Dexing, do you know the plateau you are talking about, covered with heavy snow all year round."

"Once we Han people enter, they will be dizzy, vomit and diarrhea, and not adapt to the water and soil?"

"When the time comes, don't talk about conquering Qianghu on the plateau, our soldiers will enter, their hands and feet are weak, how can they fight?"

Zhuge Liang thought that Liu Yu had some clever plan, but the plateau in Liu Yu's mouth turned out to be the big snow mountain next to Shu Han.

Although I don't know how big these snow-capped mountains are, but when he climbed these snow-capped mountains, Zhuge Liang thought that he was asking for his own death, and there was no possibility of surviving at all.

But Liu Yu didn't think so, what Zhuge Liang said was altitude sickness.

This reaction can be overcome with exercise.

And the road from Shuhan to the plateau is also a relatively flat road in history, which can be passed.

In later generations, this road was called the Ancient Tea Horse Road.

After passing through Dali in Yunnan and then entering the plateau, Liu Yu felt that as long as he made up his mind, he could open up a road and go straight to the plateau.

Subsequently, from the plateau, the surprise attack on Longxi can definitely be done in one battle.

As long as the timing is right and Shu Han accumulates strength, it is not impossible to revive the Han dynasty when the Cao Wei upheaval occurs.