When Liu Yi built the Erdu capital, it was not just as simple as building two capitals. Luoyang and Hedong and Henoi were separated by one water. In winter, the river water freezes, and the soldiers and horses from Hedong and Henoi could cross the river directly. In order to avoid unnecessary wars, Liu Yi built several passes based on Mengjin to consolidate the defense line in the north of Luoyang. At the same time, Arc deputies and Xuanyuan deputies were also strengthened.

Now with the mobilization of troops from the Han Dynasty, the Wei Dynasty also began to station troops in Hedong and Henoi. When Liu Yi arrived in Luoyang, the Wei Dynasty had already built a line of defense in Hedong and Henoi.

"It seems that I can't hide it." At the Mengjin Ferry, Liu Yi looked at the enemy building built on the other side and handed the telescope to Deng Aidao beside him.

"It would be impossible to dispatch hundreds of thousands of troops without notice." Wei Yan said with a wry smile.

"Cao Rui had just died, but the speed of the Wei Dynasty's military dispatch was not affected at all." Liu Yi sighed and said, "It seems that it is unlikely to use the outside moves."

"What kind of ability is the pseudo-emperor of the Wei Dynasty who is only 18 years old? It must be the ministers in the court in power." Wei Yan looked at Liu Yi and asked, "Can you use this to provoke internal conflicts in the Wei Dynasty?"

"There is actually no difference for us who decides within Cao Wei." Liu Yi shook his head and said, "It is not very useful to use this to incite. Even if Cao Fang is ignorant, his supporters understand the importance of this battle. I am more concerned about who the two assistant ministers are fighting us."

If Cao Shuang and Sima Yi were asked to choose Liu Yi, they would definitely choose Cao Shuang, but Cao Wei could not follow Liu Yi's wishes.

"There hasn't been a news yet." Wei Yan shook his head. Until now, he doesn't even know who the opponent is.

"Try to attack first." Liu Yi thought for a while. His original plan was to fight the war in Hanoi. As long as he could have a foothold in Hanoi, the initiative would be in his own hands when fighting this battle. Unexpectedly, Cao Wei's reaction was faster than Liu Yi thought. Even though the Han Dynasty did not delay, Cao Wei had already made arrangements.

This makes this battle difficult to fight.

"Here!" Wei Yan nodded, looked at the enemy building built on the other side, and was thinking about how to attack.

"Ma Qiu!" Liu Yi looked behind him and pointed at a general and said, "You lead a team of people upstream along the river to prevent the other party from attacking with water."

Ma Qiu is the son of Ma Chao. He inherited Ma Chao's title and looks similar to Ma Chao in appearance, but he lacks the domineering aura of Ma Chao and has a bit more elegant. He is also considered a talent among the second generation of the Han Dynasty.

"Governor, isn't it necessary?" Wei Yan looked at Liu Yi and smiled, "Can Cao Wei cut off this big river?"

"Who said no?" Liu Yi smiled and said, "If I were the commander of the Wei army, if I knew that the Han was coming to attack, I would use the winter to dig ice to build a dam in advance. In this way, even if the river water thawed, there would be no obvious drop in the water level in Luoyang. When the gate was opened and water was released, it would be a shocking moment!"

"How troublesome is this?" Wei Yan was a little shocked when he heard it.

"Sometimes stupid methods are more effective than smart methods. You have to think from their perspective." Liu Yi smiled, then looked at Ma Qiu and said, "Remember, if there is no abnormality, it's fine, but if there is any abnormality, remember to alert the snake and come back to report it to me. I will be free to care."

"Here!" Ma Qiu bowed and took the order, and turned around and left.

This section of the Yellow River is hundreds of miles long, and Liu Yi cannot take care of every place, so he can only investigate it now.

"The troops are stationed in Beimang Mountain, don't move lightly. Now we have figured out who controls the troops in Hedong and Henoi, so we should hurry!" After arranging Ma Qiu to inspect the Yellow River, Liu Yi walked towards Wei Yan.

"Here!" Wei Yan agreed and took the order and left.

This time, Liu Yi sent troops to Luoyang, and 150,000 troops gathered north of Beimang Mountain. At first glance, there were endless military camps. A large number of soldiers visited or trained. The originally barren land was now shrouded in the atmosphere of war.

On the other side, there were enemy towers, with arrow towers standing in front of them. After several years of calm, the Han and Wei families were about to break out again.

The next morning, Wei Yan led a fleet to seek trouble, and took advantage of his strong crossbow range to shoot arrows at the Wei army's enemy building from afar.

However, he was forced back by the other party's catapult. The most terrifying thing on the river bank was the catapult. The rock bomb accidentally fell on the boat and it was a hole. Now it was just the end of the first lunar month. Although the water in this section of the river thawed, it was cold and icy. If the boat capsized, even if a boat was rescued, there would definitely not be many people who could survive.

After exploring this several times, Wei Yan had to withdraw his troops and return to the camp to report to Liu Yi.

"The Wei army's catapult car seems to be much more powerful, and it seems to be available everywhere. No matter where our fleet runs, there are at least a dozen catapult car attacking us." Wei Yan looked at Liu Yi and said with a wry smile.

"The defense is so strong?" Liu Yi was stunned and then thought of something: "When was the defense line in Hedong and Hanoi?"

"This..." Wei Yan recalled for a moment and said, "I have been in Chang'an for the past few years, so I don't know much about this. But I heard that as early as the third year of Xingyuan, the Wei army began to build fortifications in this area, and there were also passes in key passes."

Liu Yi has been in the Western Regions for many years and does not know much about the military here. Moreover, although there are many disputes between the Wei Dynasty and the Han Dynasty, most of them have conflicts in Yunzhou and Nanyang. In Heluo, since Xu Huang passed away, he rarely comes to cause trouble again. Most of them focus on guarding.

"In other words, Cao Wei has been operating the defense line in this area for eight years?" Liu Yi looked at Wei Yan.

"That's the case." Wei Yan nodded.

Liu Yi took Wei Yan and came back to the riverside, looked at the river carefully, and then looked at the Wei army's defense line on the other side with a telescope.

"Retreat!" Liu Yi's expression changed slightly, and he immediately said: "Import Deng Ai, Jiang Wei and others to organize troops to retreat to the Beimang Mountain Highland."

"Why is this?" Wei Yan said inexplicably.

"Assing orders, remember not to pay attention to the tent, just move the food, grass and supplies to the mountains. You can continue to patrol the river surface without any mistakes!" Liu Yi said with a serious expression.

"Here!" Seeing Liu Yi's serious expression, Wei Yan quickly agreed and went to pass the order.

Liu Yi returned to the tent, studied the sand table carefully, and after measuring some measurements with the measuring rope, he quickly came out of the camp and brought the measuring instruments to the river to measure the water level.

Grass!

After Liu Yi stood up, he looked at Wei Ying on the other side and wanted to compare his middle finger. Now he is 99% sure. This must be Sima Yi's old silver coin. The water level of the Yellow River has dropped by at least one foot compared to when Liu Yi built Luoyang. Although he didn't know where the other party was storing water, it was probably faster to release the water.

However, what really made Liu Yi feel disappointed was that the other party had predicted this battle eight years ago and began to prepare at that time. Once the water was released, if there was no preparation here, the north of Beim Mountain would become a country of marsh. If he didn't notice it, he would probably be directly taken over by the other party!

Fortunately, I have enough mechanisms!

But since you have seen through it, why not just make a plan? But no one knows when the other party is going to take action. This is a problem, so we can only use this method.

In the next few days, Liu Yi secretly transferred his troops to Beimang Mountain, and at the same time, a group of troops were left in the camp.

"What is the most normal way?" Liu Yi thought about this question, secretly transferring the army to the high ground, but the military camp did not let the other party see the flaws. But how can the tens of thousands of troops not be seen? Relying on the camp and cooperating with the straw man, the other party may not notice it in a short time, but the problem will be discovered over time. If you stop on the high platform, you will not be able to see the military camp here, but you can always see most of it.

Liu Yi wrote and painted on paper, and found that if he could not achieve a 150,000 army of troops with just five thousand men, he would not be fools after all. A large number of straw men stood there motionless. Even without a telescope, he could find out that something was wrong?

You can't have too many flags. If it's your own, if the other party puts more flags in the army or the flags are not equal to the number of people, you can notice that something is wrong at a glance.

It’s not that it’s so powerful, but the feeling of training from years of leadership. The flags and numbers are not equal. For people like them who are used to seeing thousands of troops, they will feel uncomfortable in their hearts, which is considered an obsessive-compulsive disorder. Once this feeling occurs, there must be a problem.

Liu Yi didn't know if Sima Yi would feel this way, but it was related to whether he could cross the Yellow River. He could not pin his hopes on Sima Yi's carelessness or incompetence.

If these straw men could move...

Liu Yi looked at the soldiers tying the straw men, and suddenly moved his heart and hooked his finger at Wei Yan in the distance: "Wen Chang, come here!"

"Governor, what are your instructions?" Wei Yan ran over and asked.

"Go and prepare some fine woods, the inconspicuous ones, and then prepare wheels for these straw men." Liu Yi thought for a while and waved his hand: "You don't have to worry about these things, just prepare the things. I'm going to use two thousand people to come here. In addition, I will transfer 10,000 troops from the mountain, enter the camp during the day and leave the camp at night, and repeat the cycle, creating the illusion that there are constant troops coming in."

"Here!" Wei Yan was a little confused, but he nodded and agreed, bowed and left.

Liu Yi returned to the coach's tent and took out a scroll of painting board. The camp was designed by him. It was not a big problem to add some pedestrian tracks to it. If you paint the straw man or just make a piece of paper armor, the effect will definitely be more realistic. As for whether you can deceive Sima Yi, the old silver coin, Liu Yi is not very sure, but in a war, it is just a mutual deception. Since Sima Yi has prepared a killer move and has been seen through by himself, it would be a pity not to use it. It depends on who can deceive whoever can.
Chapter completed!