But it is precisely because of this that the pressure on Yanzhou has dropped suddenly, even if the supply of grain and grass is not available, those Qingzhou troops who are the victim in Xuzhou have obtained enough food and money by robbery, and even disdain the grain and grass supplied by Yanzhou.

In this way, the pressure faced by Xun Yu and them has also been temporarily alleviated, which can be described as a blessing in misfortune.

Later, Guo Jia and Cao Cao came to their senses one after another, and relied on clever tactics to quell the rebellion of the Qingzhou Army with lightning speed, and even those who manipulated the rebellion of the Qingzhou Army behind them could only flee.

After Cao's army regrouped in Xuzhou, he wanted to capture Xuzhou City in one go.

It's a pity that the best time has long been missed, even if they want to take Xuzhou City in a desperate gamble, it is too late.

At this time in Xuzhou, not only did many troops gather in Xuzhou City, but Tao Qian's allies also came to the Xuzhou battlefield one after another.

Most of these troops who entered Xuzhou were Tao Qian's allies, and their purpose was very simple, that is, to relieve the danger of Xuzhou.

But among these armies, there was one prince who was an exception, and that was Yuan Shu of Huainan.

This son-in-law of the Yuan family in Huainan inherited the family business of his father Yuan Feng, and is not only famous all over the world, but also has the treasure land of Huainan that is rich in money and grain.

After many years of operation by the Yuan family, today's Huainan has a lot of soldiers and enough food, and it has the intention of annexing neighboring states.

And what Xun Yu and they are most worried about is not those dispensable allies and coalitions, but Yuan Shu, who has an unclear attitude.

With his troops, if he sends troops at this time, it will be a huge threat to both Yanzhou and Xuzhou.

However, compared to Cao Cao, Tao Qian was at least a nominal ally ally of Yuan Shu, even if he didn't take Tao Qian seriously at all, but for him, it seemed more cost-effective to attack Cao Cao than to attack his allies and get a treacherous infamy.

So Xun Yu, what they are most worried about is whether Yuan Shu will attack Yanzhou at this time?

But fortunately, Guo Jia, who was in Xuzhou, easily provoked the relationship between Yuan Shu and Tao Qian with stratagem, so that in the blink of an eye, he turned from Tao Qian's ally to an enemy, and Yuan Shu's army from Huainan attacked all the way to Xiapi City.

At this time, Cao Jun, who was stationed outside Xuzhou City, was originally in a difficult situation to ride a tiger, but he was relieved because Yuan Shu suddenly counterattacked and attacked his ally Tao Qian.

But although Cao's army got rid of the danger of being pursued, there was another problem in front of them, and that was the speed of the march.

The large army of hundreds of thousands of Cao Jun is particularly cumbersome at this time, and the reason is still those Qingzhou troops.

Although they supported the huge size of this Cao army and played a numerical advantage when attacking Xuzhou, they became a burden when they retreated now, slowing down the speed of the march.

Originally, the Qingzhou Army was composed of a large group of displaced people.

When this group of homeless people was in Qingzhou, they plundered the prefectures and counties everywhere, and there was no grass everywhere they passed.

It was only later that the towns in Qingzhou took precautions against this group of displaced people and built a solid defense outside the town, so the army of displaced people who did not have siege equipment and sophisticated weapons and equipment were bound to suffer huge casualties if they stormed the town without organization and discipline.

And after heavy losses, they still failed to break through the well-defended towns, which forced the group of displaced people to move farther away, and this target was Yanzhou and Xuzhou, which bordered Qingzhou.

Long before the displacement of Qingzhou was about to be moved, all the states bordering Qingzhou were prepared to take precautions.

In particular, Mu Taoqian of Xuzhou regarded the displaced people of Qingzhou as a beast of flood, and before the displaced people of Qingzhou reached the border, he had already sent a large army to garrison at the junction of Xuzhou.

Seeing that the attitude of Xuzhou was so tough, it couldn't get through at all, so the Qingzhou refugees had to turn around and go in the direction of Yanzhou.

For this locust-like army of displaced people, Cao Cao's spies got the news early on and knew that they were coming in the direction of Yanzhou.

However, unlike Tao Qian's attitude towards this group of Qingzhou refugees, Cao Cao accepted the advice of Xun Yu, Guo Jia and other strategists, and decided to accept this large group of refugees to supplement Yanzhou's strength.

At this time, the army of displaced people was extremely tired and hungry when they came to the border of Yanzhou because of the successive defeats in attacking the towns.

Now in the face of the Cao army, which had already been waiting for them, they were powerless to resist at all.

Therefore, when Cao Cao sent an envoy to negotiate with the leader of this group of displaced people, an agreement was quickly reached.

Cao Cao then provided shelter and tools for the displaced people to live in Yanzhou.

The sturdy men formed the later Qingzhou Army.

After these millions of Qingzhou refugees joined Yanzhou, Cao Cao's strength was greatly enriched.

In this era of war, population is the greatest resource.

But the short-sighted princes were completely unaware of this situation and wantonly trampled on the lives of the people.

As a result, the people complained and the population of the territory withered.

For example, when the tyrant Dong Zhuo occupied Luoyang, he took pleasure in killing the people, and during the time he was in, the towns and villages around Luoyang were once deserted, and even Luoyang was burned when he fled later.

The dignified capital of the Eastern Han Dynasty was destroyed by a brutal and unkind tyrant, and until now it is still in ruins and desolate.

Therefore, the Ming monarch who knows how to cherish the people will become stronger and stronger, while the faint monarch and tyrant who regard the lives of the people as grass and mustard will not win the support of the people, and eventually the congregation will rebel and perish.

It is precisely because of this that in this troubled era, the wise man will become stronger and stronger, while the mediocre and unscrupulous people without foresight will soon die out in the long river of history, leaving infamy in vain.

And Cao Cao is the Ming monarch who knows how to plan for the long term, he accepted these millions of Qingzhou refugees, not only enriched the population of Yanzhou, but also formed an army of hundreds of thousands, and his strength jumped above all the princes, second only to the Yuan brothers.

It is with such capital that Cao Cao can drive straight into Xuzhou and level Xuzhou, if it weren't for Tian Feng making trouble behind his back and using conspiracy and tricks to make the Qingzhou army rebel, this Xuzhou would have been Cao Cao's territory.

But all good things seem to have been missed by Cao Cao after he made this wrong decision, not only did a good deck of cards play poorly, but even his hometown Yanzhou could not be guaranteed.

Somehow, Lu Bu's army suddenly appeared in Yanzhou, and the defenses that Xun Yu, Guo Jia and others had painstakingly built were useless in front of them, and they appeared in Yanzhou as if they had fallen from the sky.