In the siege warfare of the Three Kingdoms period, roughly, there were only four methods.

Water Attack, Psychological Tactics, Siege, and Storm.

Needless to say, besieging a city is nothing more than besieging the city, breaking the city by cutting off water and food, or digging tunnels.

Among them, the water attack, the need for special terrain to be implemented, the famous method of water attack in history is, when the Qin State invaded Chu, Bai Qi attacked the important town of Yancheng of the Chu State in a battle, although the terrain of Yancheng was low-lying, but there was no suitable river around it for water attack, Bai Qi after a detailed geographical survey, mobilized hundreds of thousands of troops and people to dig the channel, build a dam, divert water for dozens of kilometers to irrigate the city, after the war this channel was used to solve the irrigation problem, called the Baiqi Canal, later generations are still in use.

During the Three Kingdoms period, Guan Yu also used the method of water attack, against the general of the Cao army, flooded the Seventh Army, forced Yu Ban to surrender, beheaded Pang De, and shocked Huaxia.

Psychological tactics are to take advantage of the psychological weakness of the defending forces, use persuasion to surrender the generals, encourage the people in the city to rebel, or the soldiers mutiny, or take advantage of the defender's lack of firm fighting will, and adopt the strategy of encircling three and missing one, inducing the opponent to break through, and then annihilate the opponent in the field battle.

The focus is on direct siege, which is generally divided into two parts: the cover of long-range weapons and the infantry landing the city, and a few times tunnels are also dug, but the success rate is not high. Long-range weapons bows and arrows, infantry crossbows, large bed crossbows, lever trebuchets, in order to increase the range and power of these weapons, if time permits, soldiers will be sent to carry earth to build earth mountains, and these long-range weapons will be arranged on the earth mountains, of course, it is better to have a suitable distance nearby.

Infantry ascending the city, in ancient times there is an image of the saying called "ant attached", that is, like ants to climb up, mainly crowd tactics, but there are also many skills, such as advanced ladders and flying bridges, which can greatly improve the speed of climbing, the coordination of long-range weapons can effectively suppress the long-range weapons at the head of the city, and the reasonable configuration of the cart and rattan can reduce the casualties caused by the enemy's arrows.

Good control of the timing and pace of attacks can maintain the morale of the siege, strict rewards and punishments can boost morale, etc.

However, the mortality rate of a direct siege is also the largest, and if it is not far superior to the enemy's forces and attacked with all its might, the chances of victory are not great.

And even in terms of troops, they are far superior to their opponents, and before attacking the city, they also need to make some preparations, such as the first soldiers to attack the city, and they will be given wine and meat to boost morale. If the city has a moat, soldiers are required to carry dirt bags to fill in the moat.

The first soldier to ascend the city was rewarded heavily, and if he died, the reward was given to his wife and children, and usually the first to climb the city was more likely to be killed in battle, and if he ascended the city and was carried back by the enemy's reserves, he was also rewarded for the heroic death of the last man on the city.

These are the two rewards that must be given in siege warfare. Prisoners and soldiers who had committed military discipline in the army were sometimes organized into death squads for the first siege of the city, and the moment their feet set foot on the city, no matter how great the crime, they would be pardoned.

However, it is obvious that there is no such person in Guan Yu's army, and Guan Yu uses strict military discipline to command and mobilize his sergeants.

Following his order to charge, the archer battalions on both sides, using dense bows and arrows, suppressed the defenders on the tower of Huainan City to counterattack.

The 30,000 troops below pushed the cart, and the ladder began to attack.

However, it is obvious that these defenders in Huainan City are also determined and have a strong heart to defend the city, and after Guan Yu led the men and horses to rush three times in a row, they were not able to defeat Huainan City.

The first batch of soldiers who went first didn't even go up to the city, and they were all beaten down by the civilian staff.

When there were more than 30,000 dead and wounded in the army, Guan Yu had to give up and retreat from the front.

"Big brother, the last general is useless, and he failed to take down this city!"

After some fighting, Guan Yu was defeated.

Back in the military tent.

In this big tent, the commanders of the three parties gathered here, and the men and horses under Gongsun Chan were not killed or injured in this attack, because most of Gongsun Chan's men were mainly cavalry, even if they were attacking the city, they were just making a few shouts on the side.

Among the 10,000 dead and wounded, they were mainly people under Liu Bei and Liu Chong.

"Ladies and gentlemen, the failure of the attack on Huainan City is my responsibility, I can't help it."

Liu Bei opened his mouth and said a word to everyone first.

"Xuande, I don't blame you for this matter, we don't know, there is Liu Zheng's army in this Huainan City, if it is just the information we found before, there are only more than 10,000 people in the city, it must be able to be defeated, and now that Liu Zheng is here, I know that Liu Zheng must have deployed heavy troops here!"

Gongsun Chan didn't complain about Liu Bei.

"Although we didn't take Huainan City, but we saw Liu Zheng here, it's also good news, as long as we can contain Liu Zheng here, Lu Shi will be able to attack Xuzhou with all his strength, and let Liu Zheng have no skills!"

Gongsun Zhan didn't feel useless for this battle, at least they knew that Liu Zheng had already deployed troops in Huainan County in advance, and Liu Zheng himself did not have many soldiers and horses on Yangzhou's side, and now they were all pulled here, which means that Liu Zheng's troops in other places have decreased.

As long as Liu Bei and Gongsun Zhan contain Liu Zheng in Huainan County, the probability of Lu Zhi's surprise attack on Xuzhou will be greater.

"Yes, so our attack just now was just a tentative attack, and we didn't really want to fight Liu to the death here."

"As long as it is proved that Liu Zheng has a large number of soldiers and horses here, we can change our strategy, we don't need to rush to attack the city, and continue to spend time with Liu Zheng here."

Liu Bei is not afraid of fighting a war of attrition, and he is sure that Liu Zheng is in Huainan City, but he is the one who is not worried.

As long as time is consumed, Yuan Shao's situation in Qingzhou will definitely be very good, and after the fall of Qingzhou, Lu Zhi's situation in Xuzhou will definitely be at an advantage.

When the time comes, two states have fallen one after another, and Liu Zheng is equivalent to breaking two wings. Although it will not collapse all at once, it will also lose some power, and the threat will not be so great.

"Actually, guys, I have a way, maybe I can defeat Liu Zheng."

When everyone was discussing the siege of the city and containing Liu Zheng here, Chen Wang Liu Chong, who had not spoken, said a word.

He opened his mouth to speak, making him, who had no sense of existence, suddenly become the focus of everyone, and everyone looked at him.

"King Chen, do you have a good opinion?"

Liu Bei couldn't help but ask.