Zhou Yu used his naval force to enter the inland river, which was basically a dimensionality reduction strike.

This tactic is a routine operation in Europe, that is, in the Mediterranean and North Sea regions. From the Nile River to the British Isles, from Gaul to Asia Minor, there are countless similar battle cases. If we wait until the rise of the Vikings, then this kind of tactics

Tactics are so widespread that they can no longer be called tactics.

However, in the East, in the Han Dynasty, in this autumn of the sixth year of Jian'an, it was an unprecedented method.

The reason is very simple. In the Middle Ages, sea-going ships and inland ships were two completely different types of ships...the former was slender, and the main restriction on its entry into inland rivers was the draft, so when the water rose, it could be sailed into inland rivers;

On the contrary, the latter has a wide bottom and shallow draft, but it cannot withstand sea waves!

In other words, only sea-going ships can enter inland rivers, but no inland river ships can enter the sea. This tactic has always been based on the scale of the maritime navy.

And how many years has it been since the maritime navy was taken seriously? It only took a few years from the year when Yuan Benzhu was defeated. Even now, the only organic naval forces in the world are the Qingzhou Navy and the Xuzhou Navy.

Therefore, Zhou Gongjin's operation, in the context of the entire world, is purely a leftover of those marine civilizations, but in terms of the entire land civilization of the Han Dynasty, it is absolutely groundbreaking.

And now, once successful, the results are outstanding.

First of all, the inland river channel became Zhou Yu's unilateral high-speed troop transport channel, but at the same time it became the only way for Langya soldiers to transport troops!

Now 40,000 to 50,000 Langya troops have gathered at the foot of Tancheng. The logistics supply line has been cut off, and the back roads have been captured. People at the top and bottom are panicked. It is impossible to say that the entire army will collapse in four or five days. Therefore, since the Navy has cut off the Yishui River, it is equivalent to normal

In the sense of sealing one's throat at the sight of blood, Zhou Yu didn't have to do anything but wait for the Langya soldiers under the city to collapse.

Secondly, on the battlefield in the north of Xuzhou, only Zhou Yu can perform this operation, and the Qingzhou Navy cannot do it, because Yishui, Shushui, even Wushui, and Sishui all belong to the Huaihe River system, and the mouth of the Huaihe River is in Guangling County.

Inside! Zhou Yu carefully planned to let the Xuzhou navy take advantage of the shelter of Yuzhou Mountain outside Qu County (the main part of Lianyungang in later generations, which was a huge island at this time), and quietly let the navy transfer from the Huaihe River to Surabaya, and then avoid the Xiapi area behind it.

To get to this point... If the Qingzhou Navy wants to come over, it will either carry the warship and walk hundreds of miles on land and then put the ship into the Shu River, or it will have to sail thousands of miles without any logistical supply points.

, detouring around the mouth of the Huaihe River, and then breaking through countless important towns in Huainan along the way!

It is estimated that by the time they arrive, the war here will have been over for half a year.

In other words, Zhou Yu's move belongs to the most quintessence and essence of the art of war. It forms a local battlefield advantage that he can independently control on the battlefield he has predetermined... The Qingzhou Navy has always been in a state of conflict with the Xuzhou Navy.

At this point, it is basically useless and useless!

It's not that they can't do things, but as things stand now, the key to the battlefield is in the Yishui River, in the Shu River, in Tancheng, Kaiyang, and Jiqiu near the two rivers. You, the Qingzhou Navy, dug out Xuzhou's back road.

, what’s the point? And is it too late? It’s more than 500 miles from Buqi County, where the Qingzhou Navy is stationed (later Jiaozhou Bay area) to Xuzhou’s jurisdiction...

Things like fighter planes are meaningless if you are one step too late, and now the fighter plane seems to be controlled by Zhou Yu!

"We still need to invite the Qingzhou Navy to go south." The autumn air was crisp and the waves were rolling. In the evening, on a high ground on the shore of Yishui River, Zang Ba frowned as he looked at the slender ships cruising in Yishui River from time to time. "At least.

Please ask them to come to Ganyu area to provide support..."

"Does Mr. Zangfu want to cross the Shu River and withdraw his troops along the coast?" Guo Jia guessed what the other party meant before he finished speaking.

"Of course!" Zang Ba gritted his teeth and responded.

"It's useless." Guo Jia pointed to the downstream direction of Yishui River and said. "Yishui River and Shu River are almost parallel, only a few dozen miles apart. Then they meet with Surabaya River near Xiapi City. It's just as I expected.

Zhou Gongjin should have stationed hundreds of navy ships there... At this time, although most of the navy was moving up the Yishui River to cut off our army's back, it did not delay others from dedicating dozens of ships.

, cruising along the river as before, blocking traffic!”

"So, aren't we facing a dead end?" Wu Dun was panicked for a moment. "The supplies are cut off, and the camp will run out of food in a few days at most..."

"Then we have to find a way out within a few days." Guo Fengxiao's expression remained unchanged despite the autumn wind and waves.

"It's easy to say!" Wu Dun became more and more anxious. "Look at the direction of the wind... A sea-going ship will raise its sails if it goes against the current, and it will go straight down if it goes against the current. The speed is ten times that of marching on land. Not to mention finding a way out within four or five days, it means escaping.

The passage between these two rivers is difficult!"

"Then we can only turn around and attack Jiqiu. There is still some food in Jiqiu. Before they have a firm foothold, we can take Jiqiu back before the food is all eaten up. Then, regardless of Kaiyang, we will go north along the Yishui River to my

Ju County will be safe!" Sun Guan said harshly. "Then wait until October, when the water is shallow and frozen, and we can come back!"

"It's useless." Guo Jia raised his hands and responded. "If I were Zhou Yu, I would have told my generals to lay down the hill, immediately burn the food and military supplies, then abandon the city and ignore it, and board the ships to continue to open the Yangtze River...

… There is no food in Jiqiu, and judging from their speed, there is no chance that the sentries will report back tomorrow, saying that Jiqiu has been burned, in order to shake the morale of our army."

"Isn't that doomed?" Sun Guan looked ferocious, almost drawing out his sword. "It was Deputy Envoy Guo who asked us to attack Tancheng. An army of 40,000 to 50,000 people came here, but ended up like this... What happened now...

It doesn’t work either, it doesn’t work right, do you want us to kill you and surrender to Zhou Yu?!”

"Put down the sword!" Before Guo Jia could speak, Zang Ba shouted sharply, and then he looked at Guo Jia and Xu Shu, who also drew his sword behind him. "Deputy Envoy Guo..."

Guo Jia looked back at Xu Shu, who naturally sheathed his sword.

"Deputy Envoy Guo." After the atmosphere calmed down, Zang Ba faced him seriously. "There is no better trick than to cut off food. You should also know that for this expedition, 80% of our food in Langya is in Kaiyang City, and 20% is in Jiqiu.

The food in the camp is only that, and it is still locked in the narrow dead land between Yishui and Shu rivers. It cannot even be plundered... Once the food is used up within four or five days, it will collapse, and then let Zhou Gong

Jin went out of the city to hunt! At this time, we should be in the same boat. I see that you look normal, so you must have a plan to deal with it, right? Why cover it up?"

Guo Jia shook his head repeatedly: "Zhou Yu's use of troops this time was unexpected. I am not a god. How can I have any countermeasures?"

Xu Shu couldn't help but glance at the back of Guo Jia's head.

Zang Ba was silent for a moment, but he waved his hand to the rest of the crowd to leave for now. For a moment, there were only Langya generals and Guo and Xu on the hillside near the river.

"Although I didn't expect such a clever and vicious plan from Zhou Gongjin, I am indeed confident when I go south this time." The others retreated, and without waiting for Zang Ba to ask again, Guo Fengxiao took the initiative to speak. "Because long before the troops were sent out, I had a close relationship with Mr. Zang Mansion.

On the day of the meeting, I had written letters to the north and west, asking Duke Guan to move south, and Guan Gong went east..."

Zang Ba was stunned for a moment, and then he was surprised: "Have you both replied and agreed?"

"This is natural." Guo Jia answered frankly. "Since I noticed your sincerity, Mr. Zang, I knew that this time would definitely prompt the Langya soldiers to go south. And since there are 50,000 Langya soldiers here, it will always be easier to open them.

What's the situation, right? In fact, the reply letters from Guan Shen and Guan Shen arrived the day before departure..."

With that said, Guo Jia took out two documents from his arms. Zang Ba took them over and took a quick look at them. He felt relaxed all over. He then passed them to the generals behind him to read them. After reading them, everyone was so relaxed that they lost their composure.

situation.

"Deputy Ambassador Guo told you earlier!" Sun Guan, who had been facing each other just now, couldn't help but sigh. "It turns out that the east of Guan Town is at the junction of Lu State and Taishan County. From there, you can just follow the Wushui Channel.

It takes only three days to march directly down to Kaiyang. If you calculate it this way, General Guan will set off at this time. He may be able to take back Kaiyang in time when the Xuzhou navy is unprepared... and Kaiyang is close to the river, enough to build a pontoon bridge based on the city tower.

Connecting the two sides of the Taiwan Strait, in this way, although the situation is difficult, it is only temporarily difficult, and the victory is still with us."

"There is also Shen Qingzhou." Xiao Jian, who had been trembling and speechless before, was relieved for a moment. "Since Shen Qingzhou has arrived at Jiwu Pass, he can let the Qingzhou navy go ashore at any time, and then capture Ju County, which is stationed in Lao Sun.

, then if it doesn’t work, our way out is actually clear.”

"Now that you are relieved, let me say something more offensive." Guo Jia took back the two letters and smiled slowly. "Even if our entire army is annihilated, the overall situation will still be in Hebei... Our place does not matter.

What? It’s just to make a breakthrough in the deadlock in Guandu, and in Guandu, will my Yan Gong lose? Don’t you, gentlemen, make the wrong decision because of the temporary setback and regret it for the rest of your life.”

Sun Guan and others chatted for a while, and then made promises one after another.

"Okay." Zang Ba suddenly waved his hand. "Anyway, everyone knows the name of Shen Qingzhou. I know General Guan's character better. Since General Guan said he would come to support, he will definitely come! Before that,

, no matter how difficult the situation is, you must restrain the soldiers with me and support the situation... The army is outside, if there is disharmony, don't blame me for being unkind."

The Langya generals hurriedly agreed, but then left one after another.

When everyone else left and there were only Zang, Guo and Xu on the hillside by the river, Zang Ba, although his expression remained unchanged, asked a shocking question: "Deputy Envoy Guo, I recognize General Guan's handwriting.

Although the handwriting of the letter is similar to that of General Guan, it is not written by him... What is going on?"

Guo Jia was silent for a moment and then spoke: "I feel that the generals under Zang Fujun may not be trustworthy, especially Sun Guan, who volunteered too much. In addition, the Ju County where their Sun brothers are based happens to be sandwiched between the Yishui River and the Sushui River.

Among them, there is actually a vague appearance of forming a pocket formation together with the two rivers and Tancheng... If he followed his previous suggestion and retreated in embarrassment, the entire army would be annihilated in this sealed pocket. Therefore, this

I just prepared these two fake letters just in case, but I didn’t expect to actually use them in just a few days."

Zang Ba was about to speak but stopped.

"It seems that I guessed it right, right?" Guo Jia sighed. "The person who has nothing to do with Xuzhou is not Chang Xi. Chang Xi just disobeys Lord Zang and has an unruly nature. The one who is really shaken is Chang Xi.

It's the friendly young master and the loyal Sun Guan. They were originally dissatisfied with Lord Zang's surrender to Hebei... What, now that things have happened, do you want to capture me and then surrender to Zhou Yu?"

Zang Ba shook his head and said, "Deputy Ambassador Guo, please rest assured. If things really go wrong, even if I abandon Langya's foundation and these tens of thousands of troops, I will definitely return to Qingzhou with my feet intact. At worst, I will have to defend Jiwu Pass...

…How can we talk about surrendering Zhou Yu?”

After saying this, Zang Ba turned around and left without waiting for the other party to speak, as if he was also angry.

At this moment, Guo Jia sighed, but said sincerely to the other party's back: "I did have a letter to Guan and Judge that day, but I didn't have time to receive a reply."

Zang Ba was startled for a moment, then nodded heavily, and then left.

At this time, there were only two people, Guo and Xu, on the slope beside the river.

The two stood side by side for a long time, Xu Yuan looked straight at the Yishui River filled with golden afterglow, and sighed: "I don't even know which of your words are true and which of you are false..."

Guo Jia also looked at Yishui and shook his head with emotion: "Yuanzhi, you still don't have a big picture view...what's true or false in front of the big picture?"

"What exactly is the overall view?" Xu Shu frowned.

"I will tell you everything today!" Guo Jia turned around and held his sword, looking at the fellow countryman beside him and said seriously. "Yuan Zhi, first of all, the general trend of the world is that Hebei intends to annex the world, and the Central Plains will form an alliance to protect itself... In this battle,

Because Yan Gong did not rush forward after successfully conquering Yuan, but managed it for three years, waiting for the emperor to come of age, and then annexed Xiliang. In the meantime, he also fought a battle with Xianbei and occupied Yinshan, so Hebei has no future troubles, so even if we

If Hebei loses, they can start over, but if Central Plains loses, they will be unable to recover...right?"

"Yes!" After thinking for a moment, Xu Shu simply responded.

"Secondly, the real key to this battle itself lies in Guandu, and the situation in Guandu is that Duke Yan relied on the encounter on that day to determine a three-point advantage in one battle. Therefore, although there is a stalemate now, it is more obvious that Hebei dominates.
To be continued...