In Guan Yu's plan, the flooding of the Seventh Army did not really let the Han River break the embankment and ignore it, he did nothing, and relied on the rushing water of the Han River to drown the enemy. Truth be told, it can't be done.

With the current level of the Han River and the speed of the water flow, even if the embankment bursts, it will be poured out of a tidal flat if it is dead, and the speed of the water is not fast enough, even after the initial panic, the Yu Forbidden Army has time to command the soldiers to take refuge in the high ground, and then come down to continue to fight Guan Yu when the water recedes.

If you want to drive a boat to besiege others like in history, you don't even think about it.

The flood in the twenty-fourth year of Jian'an, directly caused the Han water level to soar, directly washed away the embankment, the Han water overflowed in large quantities, poured into the plain, at the highest peak, the water level of the Han River was seven or eight zhang higher than the flat ground, the highest part of the Fancheng city wall was only less than two zhang away from the water surface, Guan Yu could easily take a boat to surrender to the forbidden army, and by the way, Fancheng was also flooded.

But now, the water level of the Han River is not so high, and although it has rained a little recently, there have been no consecutive rainstorms, so Guan Yu still decided to dig a river embankment downstream near the forbidden camp to release water.

But the purpose was not to drown the forbidden army with water, but to use the water flow of these embankments to create chaos among the soldiers in the forbidden camp, and then Guan Yu let Guan Ping, Zhang Xi, and Zhang Wei set up an ambush on three sides to besiege the Cao army who fled the camp because of the temporary chaos.

After all, water and fire are ruthless, even if it is just the amount of water that can drown your knees, suddenly a large number of people appear in front of you, and few people will not panic.

In fact, most of the water and fire attacks in this era were just to create chaos in the army, including the famous Battle of Chibi, there were very few soldiers who really died in the Chibi fire, most of them were because of panic and could not organize an effective defense, and were broken by Zhou Yu's troops.

Water attack may be a little special, after all, it depends on the water level and the speed of the water flow to determine the power. But most of it is still used to create chaos.

Only a small number are exceptions, and basically there is no such thing as this era, but it is concentrated in the northern Yellow River area of later generations. In later generations, the Yellow River has become an above-ground river under sediment sedimentation, with its own height difference, once the embankment breaks, it is not easy to block it.

Guan Yu's plan to flood the Seventh Army this time is essentially to create chaos, and after digging the embankment, he will not leave it alone, but will quickly block the embankment after the ambush is over, so that the losses caused by the flood can be minimized and the cultivation next year will not be delayed.

As for this year's grain, don't think about it, it's been a war until now, and this year's grain will definitely not be saved.

Just when Guan Yu was making combat arrangements and preparing to break the embankment. In the area of Xiangfan, it began to rain suddenly.

During the rainstorm, it was not suitable for the use of troops, so Guan Yu suspended the arrangement and waited for the rainstorm to pass.

Since the beginning of August, this kind of rain from time to time is really common, sometimes it stops in the next few hours, sometimes it is the next two or three days, and the longest is not more than three consecutive days.

This kind of weather is fair to both sides, and no one can take military action, so they can only wait for the rain to stop.

But this time, the torrential rain has been falling for five or six days, and it still has no intention of stopping.

Zhang Xi began to be confused, looking at the sky from time to time, and was strongly doubting whether there was really such a thing as God in this world.

Or maybe the second master is really the reincarnation of the heavenly martial saint, he wants to fight, and God will come to help?!

According to past experience, a rainstorm for three consecutive days can make the water level of the Han River rise and the water flow faster, but it will not make the water level higher than the river embankment, as long as the rain stops for two or three days, the water flow will naturally return to calm, but now it has been raining for five or six days in a row, and there is no sign of stopping at all.

Zhang Xi once braved the heavy rain and went to the Hanshui embankment to observe the hydrological situation, and if it rained at this rate for another two or three days, the water level of the Hanshui River might overflow the embankment.

At that time, it will not be a question of whether to flood the Seventh Army, but how not to flood the more than 30,000 people we have brought.

The second master said that this is easy to do.

Don't forget how we got to the north shore of Hanshui.

Sensing the possibility of flooding, Guan Yu ordered some of his men to find high ground and set up camp, while some of them withdrew to their boats. Don't forget, we're here to fight Xiangfan this time, but we're carrying more than 200 boats.

Therefore, Guan Yu's army, after two days of moving camps and boarding ships, finally completed the evacuation work.

During this period, the torrential rain in Xiangfan still did not stop, and even worse news came.

On the south bank of the Han River, a large-scale flash flood broke out because of the heavy rain for several days, and the mountain flood suddenly poured down with a mudslide and poured directly into the Han River, resulting in the silting up of a part of the Han River and the water flow was not smooth.

At this time, the flood water in the upper reaches of the Han River was still pouring down, constantly washing away these silt and rocks, and the blockage of these silt also made the water level continue to rise, and finally, the embankment on the north bank of the Han River could not hold on.

The Han River burst its banks, and a large number of Han Shui diverted and poured out towards the north bank of the Han River, instantly flooding the farmland along the Han River, as well as two military camps.

Yes, even the camp where Guan Yu was originally camped was also flooded under the surging water level of the Han River.

As for the forbidden Seventh Army. To be honest, Yu Ban's reaction is not slow.

Yu Ban, who has been in the north all the year round, has no idea that Jingxiang is a place where heavy rain will fall in July and August, and he doesn't know anything about the hydrological conditions of Hanshui.

It rained a few days ago, and Yu Ban just felt that the weather in this place was too bad, and he finally prepared a plan to send troops to attack Guan Yu, so he had to postpone it.

After all, it is not without precedent before, and in the next two or three days, the rain will stop by itself.

But when the rain didn't stop for seven or eight days, Yu Ban finally realized that something was wrong. To the south of oneself is a great river.

The day before the Hanshui embankment burst, Yu Ban finally realized the danger, personally ran to the Hanshui embankment to check, and after returning to the camp, he also quickly began to organize the soldiers to evacuate the camp and try to take refuge on the high ground.

But. Under the command of Yu Ban, after several battles, there are now about 25,000 people.

Guan Yu evacuated his more than 30,000 soldiers and went up the mountain, which took two days, and Yu Ban only had one day for him, and even he had a disobedient subordinate Xu Chu.

Yu Ban asked the army to retreat quickly and retreat to the original camp on the north side, where the terrain is relatively high, and there are traces of the original camp, so it is easier to establish a new camp.

But Xu Chu didn't know what to think at this time, that is, he was against Yu Ban, that is, he recognized that Yu Ban was timid and afraid of things, he was afraid of Guan Yu, and he did not dare to fight Guan Yu.

Therefore, Xu Chu said, if you want to withdraw, I will take more than 7,000 people from my headquarters to stay in this camp, and when the rain stops, you will ban this gallant mouse, just wait to see your own achievements.

At this time, Yu Ban can't care about persuading this fool anymore, anyway, I am the main general, and I have the final say.

Yu Ban left Xu Chu alone, and withdrew to the northern highlands with more than 17,000 people who were willing to go with him.

But after all, it was a step too late.

The Han River burst its embankment, and the water was too fierce, and soon caught up with Yu Ban's retreating army, forcing Yu Ban to let the soldiers scatter and escape, and find high ground for refuge on his own.

And Xu Chu is not really a fool in the end.

When he said that, he was addicted to it and ridiculed Yu Ban.

Obviously, he repelled Guan Yu and captured Guan Yu's camp, but that Yu Ban was jealous and jealous, but he refused to give himself credit for no military merits, why should he be a marquis!

But after seeing that Yu Ban really ignored it and led the soldiers to retreat quickly, Xu Chu was also a little hesitant.

After quickly sending people to the river embankment to check, Xu Chu finally realized the seriousness of the problem, and immediately organized troops to retreat to the east.

Xu Chu mainly thinks that just now he was still working against Yu Ban and disobeyed the ban general's order, and now if he also learns to retreat to the northern highlands and waits for the two sides to meet, he will be very faceless.

So Xu Chu didn't want to run north.

But to the west is Guan Yu's camp, and Xu Chu can't take such a few soldiers to the door to find death, and to the south is Hanshui. Therefore, Xu Chu didn't use his brains much and chose to retreat to the east.

But the problem is that in the east, it is the direction of the lower reaches of the Han River, and Xu Chu set off half a day later than Yu Ban After the Han River broke the embankment, most of the 7,000 soldiers led by Xu Chu were washed away by the flood after the Han River broke the embankment, except for a few who were lucky enough to take refuge on the mountain heights.

Xu Chu himself was lucky, although he couldn't swim, but it happened that there was a big tree next to him that was swept away by the flood, Xu Chu barely floated with this tree, and it didn't take long for him to be found by the sergeant who ran to the high ground and rescued him.

On Yu Ban's side, he also tried his best to run to the high ground to avoid the flood, but he came out with more than 10,000 people, but now only a few hundred people are following him.

However, there is also good news, that is, of the more than 10,000 people in the forbidden area, not many people died directly in the flood, everyone basically ran to the nearby large and small highlands, some of the highlands are flat and large, there are two or three thousand people gathered, and some places are small, just like the place where Yu Ban is waiting, can only accommodate two or three hundred people.

roughly estimated that the soldiers he brought out, nearly eight adults were still there, which made Yu Ban's heart feel better.

But the problem is still there, the rainstorm is still falling, the water level is still rising, and God knows when, these highlands will not be able to survive.

Another one, who fled for his life at the beginning, almost abandoned all the grain and grass baggage, and now is besieged by the flood, there is no food and grass at all, so many people, what do they have to rely on to survive.

These two questions, Yu Ban thought of almost immediately, but he didn't have any solution.

In the face of such a natural disaster, Yu Ban is really powerless.

(End of chapter)