Cao's army attacked the city for three days in a row, and the casualties of the army were nearly 5000, and the shortcomings of the Qingzhou army were gradually exposed.

The Qingzhou soldiers were originally selected by Cao Cao from the Yellow turban army of Qingzhou. Their morale was high when fighting with the wind, but low when fighting against the wind. Therefore, Gongsun Zan took advantage of the fact that the Qingzhou soldiers were not able to fight endlessly. Gongsun Zan held fast to Pingchang city for several days. When the Yellow turban thieves' morale was depressed, they suddenly went out to fight. Therefore, the Yellow turban thieves were defeated and Cao Cao took advantage of them.

The Qingzhou soldiers were based on the Yellow turban thieves in Qingzhou. They were able to entangle with the elite Danyang soldiers by virtue of their ferocity in the field. However, after a few days of siege, they were demoralized.

"Hum!" Cao Cao held a Gehu halberd in his hand and returned to the barracks in anger. He inserted the Gehu halberd on the ground, and his remaining anger was not eliminated.

"My Lord, what's the matter with you? Are you worried about the war situation?" Seeing Cao Cao's angry face, Cheng Yu comforted him and said, "since ancient times, the siege of the city has been going on for many years. The battle of Changping between Qin and Zhao lasted for three years, and Wang Jian's battle against Chu took more than a year. Our army's strategy of several counties in northern Xuzhou was less than a month, and the siege of xiapi District lasted for three days

Cao Cao sighed: "Zhongde, these generals all know that it's not that the generals have no confidence, but that the Qingzhou soldiers don't last long. Nowadays, the morale of many battalion generals is low, I'm afraid it is..." at this point, Cao Cao's face sank.

Cheng Yu frowned: "so it is. Did the Lord just go out to patrol the camp?"

"Hum! A group of Qingzhou soldiers tried to escape, and they were executed on the spot. " Cao Cao said: "it's just that the Qingzhou soldiers are worried about the fact that they are not willing to fight hard. In the future, our army will certainly have a more difficult war than the siege of xiapi. It is not impossible to besiege the city for many years. It is not impossible for them to be so impatient for only three days. How can we get rid of this?"

Cheng Yu said with a wry smile: "my Lord, these things are things that need to be considered in the future. What we need to think about now is how to break the xiapi city."

"Alas, the Qingzhou soldiers are impatient to fight, and their morale has not been as high as before. What is hateful is that Liu Xuande, with Guan Yu and Zhang Fei and the plain army, came to assist in the battle, otherwise they would have broken xiapi long ago!"

Cao Cao smashed his fist on the desk, and suddenly said, "by the way, where is Zhicai? Why not?"

Cheng Yu shook his head: "Zhicai day with several ten Qingzhou soldiers to the surrounding four to check the situation of mountains and rivers."

Cao Cao laughed: "Zhicai is too cautious. Yuan Shu stands on the sidelines. Our army and Tao Qian will not win or lose. Zhang Xun's ten thousand troops will never go out. Chen Li and Chen Deng are the dogs guarding the house. Besides Liu Xuande, who will send troops to rescue xiapi?"

"Lord!"

A cry outside the barracks suddenly came in. Cheng Yu said with a smile, "Lord, Zhi just came back."

Cao Cao saw Xi Zhicai come in and sighed: "Zhicai, Qingzhou soldiers are not willing to fight hard. Today they have begun to flee. Do you have any strategies?"

The actor's face was full of excitement and confidence: "my Lord, you don't have to worry. I already have a plan to break the enemy in my heart."

Cao Cao and Cheng Yu were shocked and looked at each other. Later, Cao Cao asked, "if you want to be talented, will you be able to make a plan?"

He walked slowly to the side of the map. He said, "as the saying goes, war is not always powerful, and water is changeable.". Qingzhou soldiers do not have a durable war, and it is very difficult for our army to break through xiapi city. And a few days ago, Mr. Wen Ruo, who is stationed in Qingzhou, has sent us a letter saying that the military food can support at most one month. "

Cao Cao nodded and said, "yes, if we can't take xiapi city in one month, our army will have to retreat."

Cheng Yu is curious: "Zhicai, you don't sell the key, hurry to talk about what you have in the end."

Xi Zhicai smiles, two fingers slowly separate, respectively pointing to the Si River and Yi River around xiapi city.

Cao Cao and Cheng Yu suddenly realized what they had done.

"Zhicai, what do you mean?"

"Fire and water are merciless!" "Xiapi city is the capital of Xuzhou, and the city is solid. As long as there are enough troops stationed, it is ten times as large as the army, and it is difficult to break through in a short time. However, as long as the Si River and Yi River can be blocked temporarily, the dike and dam will be suddenly dug up after ten days, and the city of xiapi will be attacked with the momentum of water attack, and the success will be achieved! "

"When the time comes, xiapi city will be submerged, the enemy will be greatly reduced, and we must go out of the city to fight with our army. Our army is several times as many as that of Xuzhou army, and there is no doubt that it will win!"

"It's really a good plan. It's not a waste of effort." Cao Cao looked appreciative and nodded happily.

Cheng Yu is quite lamented, originally he thought his "human breast" plan was already considered to be vicious, but he did not expect that the ordinary gentle and gentle playwright could come up with such a vicious plan.

We should know that the strategy of water attack can not only drown the garrison in xiapi City, but also the tens of thousands of residents in xiapi city. It is the so-called success of a general and the death of thousands of people. The success of this strategy will make xiapi City perish.

Cao Cao decided: "order! Let Cao Ren and Cao Hong immediately lead ten thousand troops and horses to block the Yi River and Si River, and carry out immediately. ""In addition, let yuanrang and secai continue to supervise the siege of the city these days, but don't have to attack too fiercely. Just act like you do."

"No!"

Cao Cao adopted the stratagem of the dramatists. Cao Cao ordered Cao Ren and Cao Hong to lead ten thousand troops and horses to dig the dam to block up the Si River and Yi River. It happened that there was another heavy rain these days, and the two rivers were getting higher and higher.

Although XiahouDun and XiaHouYuan were still in charge of attacking the city, the offensive was far less violent than the previous few days.

"Brother, what's wrong with Cao Jun? In the past few days, archers are often used to suppress the siege. However, the infantry are slow to attack the city. Each time they attack the city, they retreat within half an hour. " He scratched his head strangely.

Guan Yu explained: "this is also normal. After all, Qingzhou soldiers are yellow turban thieves. The Yellow turban thieves have always been like this, and they can't bear to fight hard."

Liu Bei nodded calmly: "yes, Yide, the Yellow turban thief has always been like this. We have fought with the Yellow turban thief many times. Don't you know the style of the Yellow turban thief?"

Zhao Yun suddenly said: "even so, I've heard that Cao Cao is a man of great talent and vision. He has gathered a group of wise men from Yingchuan under his command. The style of Cao's army has changed greatly in recent days. I'm afraid..."

Zhang Fei patted Zhao Yun on the shoulder: "right, Zilong, I also think Cao Jun has problems."

"When soldiers come to block, water comes and earth covers them." Guan Yu Dao.