Because of the natural danger of the Yellow River, large-scale fighting was temporarily stopped on the side of the Yellow River defense line of Zhu Weijun's army.

It's just that the fighting on the battlefield has stopped temporarily, but the competition outside the battlefield has not stopped, and at this moment, Yuan Shao has also obtained the general military situation of Bingzhou and Xuzhou.

The news from the two places made Yuan Shao very dissatisfied.

Although the two sides temporarily contained the peripheral armies of the Zhu Wei army, both sides were actually pressed and beaten by the Zhu Wei army, and there was no chance of winning at all, do you want Yuan Shao's side to send troops to support them?

It's just that Yuan Shao has made the current situation, and he has already gone all out, and it is difficult for him to divide his troops to support the senior cadres of Taiyuan County and Yuan Tan of Taishan County in Xuzhou.

Although Zhu Weijun withdrew to the south bank of the Yellow River, Zhu Weijun controlled sufficient ferries and could send troops across the river at any time to launch sneak attacks and harassment against Yuan Shaojun, and Yuan Shaojun did not dare to transfer troops from this side to leave at will.

As a result, after Yuan Shao calculated the overall situation, he suddenly found that Cao Cao had been playing soy sauce outside the Tiger Prison Pass, and there was no result until now.

So Yuan Shao sent a messenger to Cao Cao's side, expressing his dissatisfaction, and asking Cao Cao to make some achievements, and not to stop outside the Tiger Prison Pass all the time.

After all, Yuan Shao sent troops south this time, and he was also invited by Cao Cao.

It is said that Cao Cao should be the main force to attack Luoyang Zhuwei, but now Yuan Shao has lost 16,000 or 7,000 troops, which can be regarded as some achievements on the north bank of the Yellow River.

After Cao Cao met with Yuan Shao's envoy, he made a suggestion to Yuan Shao, hoping that Yuan Shao could cooperate.

It turned out that Cao Cao was blocked and unable to move forward on the side of the Tiger Prison Pass, and it seemed that he was completely playing soy sauce, on the one hand, he did have a bit of the meaning of retaining his strength, and on the other hand, he was looking for fighters.

For example, Cao Cao naturally has some control over the situation information everywhere today, and the news of the war in Bingzhou and Xuzhou, even if the news is lagging behind, Cao Cao can also roughly understand the situation.

After Cao Cao and his military advisors analyzed the possible development of the future situation, they also felt that they had to defeat Zhu Wei on Luoyang's side first, otherwise the future situation would become more and more unfavorable to him.

In this way, after many discussions with Guo Jia, Cheng Yu and other military advisors and strategists, Cao Cao finally came up with a plan.

Therefore, after meeting Yuan Shao's envoy, Cao Cao took advantage of the situation to propose to Yuan Shao the strategy he was preparing to carry out, and also hoped that Yuan Shao could cooperate, Cao Cao hoped that Yuan Shao could send troops to the Tiger Prison Pass quietly, pretending to be Cao Cao's army and Zhu Weijun to confront each other.

As for Cao Cao, he will take his main army and go through Yingchuan County to attack Guangcheng Pass and Dagu Pass south of Luoyang, so that he may be able to attack Luoyang by surprise.

If Cao Cao can successfully attack Luoyang City, he can cut off the retreat of Zhu Wei's army stationed on the south bank of the Yellow River, and he can also intercept the grain and grass materials left by Zhu Wei's army in Luoyang City, which may completely change the situation of the Luoyang war.

If the battle goes well, Cao Cao and Yuan Shao can flank the main force of Zhu Wei's army on the south bank of the Yellow River, and even if they can't completely defeat Zhu Wei's army, they can at least meet Yuan Shao's army to cross the Yellow River.

As for why Cao Cao chose Guangcheng Pass and Dagu Pass as targets, it was because Cao Cao had previously tried to cut off the logistics and grain routes of Zhu Wei's army, and some troops had specially reconnoitred here, so Cao Cao was familiar with the terrain here and the garrison of Zhu Wei's army.

It can be said that although Cao Cao failed to successfully cut off the grain route of Zhu Wei's army before, it can be regarded as making preliminary preparations for Cao Cao's army to attack Guangcheng Pass and Dagu Pass.

Yuan Shao got the strategy sent back by Cao Cao, so he also discussed it with the military advisors such as Fu Zhu and Tian Feng, and felt that Cao Cao's strategy was still feasible, and if it was really successful, it could indeed change the current battle situation.

Anyway, Yuan Shao's army is now idle on the north bank of the Yellow River, and it is not a big problem to allocate about 20,000 troops to replace Cao Cao's army outside the Tiger Prison Pass, and the Tiger Prison Pass is also close to each other, and it can be transferred back at any time.

Therefore, even if Cao Cao fails to succeed, there will be no loss to Yuan Shaojun, only Cao Cao's own loss, which is also in line with Yuan Shao's interests.

So Yuan Shao used the means of transferring ferries to once again let Fu Zhu, Zhang He, and Wang Mo secretly return to the Tiger Prison Pass with the 20,000 cavalry vanguard army led by Wen Chou, and then pretended to be Cao Cao's army stationed in Cao's army camp.

Cao Cao left all the logistics soldiers, but with the main army of about 40,000, he carried dry food for a few days, abandoned all unnecessary logistics materials, quickly withdrew from outside the Tiger Prison Pass to Yingchuan County, and then detoured to the vicinity of Liang County south of Luoyang, and prepared to launch a sneak attack on Guangcheng Pass leading to Luoyang.

At this time, Cao Cao had already mobilized the remaining soldiers and horses on the Yingchuan side to prepare grain and grass materials on the Liang County side, so when his army arrived here, he could also get the supplies in time.

Now Cao Cao naturally also knows clearly, Zhu Weijun guards Guangcheng Pass, Dagu Pass side is Sun Shangxiang, Sun Quan, Sun Jing three people, because this side has to divide troops to garrison Guangcheng Pass, Dagu Pass two passes, the original troops naturally have to disperse two, so each pass is not a lot of guards.

At the same time, because this side connects Luoyang and Nanyang, it is theoretically also a passage connecting the base camp of the Zhu Wei army, so the threat of war on this side seems to be less, so the defense on this side should also be loosened.

Cao Cao also thought of a way to sneak attack, he specially sent Cao Ren, Xu Huang, and Xu Shang with 10,000 troops, pretending to be the reinforcements sent to Luoyang from Jingzhou to deceive Guangcheng Pass, and then deceive Dagu Pass all the way, so as to achieve the result of Cao's army's sneak attack on Luoyang.

And Cao Cao will also follow closely with the remaining 30,000 soldiers and horses, and support the sneak attack of Cao Ren, Xu Huang, and Xu Shang in front in time to deal with the possible counterattack of Zhu Wei's army.

This plan Cao Cao has been planning for a long time, and for this reason, Cao Cao also sent a lot of detailed works into Xiangyang, Jingzhou, to investigate the news of Zhu Weijun's movements.

Cao Cao already knew the information that Wang Yuyan was recruiting new troops in Jingzhou to prepare to support Luoyang, and he also knew that there would be troops from Yizhou and Hanzhong to Jingzhou, and then transfer to support Luoyang.

Previously, the grain raiders sent by Cao Cao also discovered the traces of the 30,000 "Dongzhou Army" that went to Luoyang from Guangcheng Pass, indicating that Zhu Weijun was indeed increasing troops to Luoyang.

Cao Cao and his advisers Guo Jia, Cheng Yu and others all thought that they could find flaws in this, as long as they pretended to be Guangchengguan, Yizhou, Daguguan, unfamiliar Yizhou, or Hanzhong soldiers, there was still a high chance of deceiving Guangchengguan and Daguguan......