There is a proverb about Xiangfan, which is called Xiangyang of iron and Fancheng of paper paste.

These two cities are not far apart, separated by the Han River, and the two sides are at each other's throats. If Fancheng is attacked from the north, Xiangyang can be supported, and if Xiangyang is attacked from the south, Fancheng can also be rescued.

But from an offensive point of view, the difference between the two cities is worlds apart.

The scale of Xiangyang city is huge, the city is high and strong and deep, the east and west are surrounded by Han water on three sides, there is Da Xian Mountain in the southwest, it is close to the mountains and rivers, it is dangerous to bear the geographical advantage, it constitutes a natural barrier, it is difficult to attack, in history, Meng Yuan fought Xiangyang for several years until the defenders in the city ran out of ammunition and food, and then surrendered as can be seen.

And Fancheng south of the Han River, the other three sides, but the plain area, is the road to the land of Wanluo, the enemy attack, if the siege of Fancheng, if the defenders do not have the determination to fight against the water, can only retreat to Xiangyang.

Like this situation, Xiangyang still belongs to the city of the Han Dynasty, if Liu Chan leads the troops to besiege the city, Fancheng is a lonely city, if Wancheng has no reinforcements, the defenders in the city can only close their eyes and wait for death.

After inspecting the situation in Fancheng, Liu Chan led his troops back to the county seat of Dengxian County.

Liu Chan ordered Huang Xu: "Huang Xu, you grew up in Jingzhou since you were a child, and you are quite familiar with the water situation, so I ordered you to lead the army to the upper reaches of the Han River to cut off the water source, and accumulate floods to wash away the soil and mountains outside Fancheng.

Zhang Bao, I order you to lead your troops to move the people on both sides of the Han River and move them to higher places, so that the flood will not hit and hurt the people. ”

"No!" The two of them surrendered their orders.

"Your Majesty!" At this moment, Guan Yu walked out.

Liu Chan asked, "What's the matter with the second uncle?" ”

Guan Yu arched his hand and said: "Your Majesty, although Zhengyang grew up in Jingzhou, he does not live by the river, cut off the river flow, accumulate floods, this matter is not trivial, you must have enough understanding of the Han River, not directly block the river in the upper reaches, other diversions, there are also sparse or blocked."

If something goes wrong, either the flood is not enough to redestroy the dirt and mountains outside Fancheng, or it will hurt itself too much. Wechen has been in Jingzhou for a long time, and he knows the water situation of the Han River very well, and he was also flooded in the forbidden army here, so this matter will be handed over to Wechen. ”

Liu Chan shook his head and said, "The second uncle is not feeling well, how can I make the second uncle work so hard." ”

Guan Yu said in a deep voice: "Back then, Weichen sat in Jingzhou, and also led troops to attack Fancheng, but unfortunately lost in the end, and now the troops are coming to the city again, this Fancheng, Weichen wants to take it down in person, and please fulfill your majesty's wish." ”

Liu Chan saw Guan Yu's face full of determination, so he said: "Well, since this is the case, you will be responsible for this matter, and Huang Xu will assist you." ”

"Thank you, Your Majesty!"

Liu Chan nodded and said, "Well, this matter must be done as soon as possible, the weather has been hot and humid in the past two days, and I expect that there will be heavy rain." Most of our soldiers and horses are from Guanzhong and Xiliang, and they are not adapted to the southern climate, and if they are in the rain, they are easy to get sick. ”

Liu Chan also grew up in Jingzhou and knows the climate of Jingzhou very well, generally speaking, the rainy season in Jingzhou is between April and October. It is now May, and according to the people, from April to May, there has not been any heavy snow or rain.

Although these two days were sunny, they were more muggy than usual, and Liu Chan, who was familiar with the southern climate, knew that there would be heavy rain in the next few days, and the time would last for a few days.

On the same day, Guan Yu and Huang Xu set up their troops and horses.

The water storage of the Broken River is also particular.

The first is to choose the geographical location, build a dam, this is the most critical, this location is related to the amount of water, if it is too far away from Fancheng, the amount of water may not be enough, it will not be able to wash away the dirt and mountains outside Fancheng, if it is too close to Fancheng, the amount of water will be too large.

Moreover, the construction site should also be selected in a narrow place on the river surface, and the embankment should also be strong to avoid flooding the embankment before the gate is opened to release water.

Floods are natural disasters, and when a flood comes, people's homes and fields will be destroyed.

Therefore, other tributaries also need to be dredged or blocked to avoid floods that are out of control and cause greater losses to the people.

This is also the reason why Guan Yu took the initiative to ask Ying, he didn't have a certain understanding of the geography of the mountains and rivers around Xiangfan, and this matter was really not good.

Guan Yu has a full understanding of Xiangfan, and he once flooded in Fancheng and captured him alive.

Therefore, Guan Yu took the generals to walk around Fancheng to see if there were any changes in the mountains and rivers, and then arranged for the soldiers to be distributed to various places to intercept and dredge the river.

On the other hand, Zhang Bao cooperated with Guan Yu to relocate the people from the areas that would be inundated when the flood came.

Three days passed in a blink of an eye, and as Liu Chan expected, on the evening of the third day, the sky of Xiangfan was overcast, and after a rumbling thunder, the sky began to rain heavily.

The work of accumulating the flood is almost done at the moment, and there is still some finishing work that has not been completed, because Guan Yu is old, his body is still sick, and he can't get drenched in the rain, so at noon Liu Chan saw that the sky was overcast, so he sent someone to call Guan Yu back, and now Huang Xu is in charge of the matter of accumulating the flood.

At the same time, Deng Ai, Zhang Ren's two soldiers and horses, also rushed to Deng County to join Liu Chan before the rain.

At the head of the city of Deng County, Liu Chan and the generals stood under the eaves, and at this moment the sky was getting dark, and the Han army outside the city returned from various rivers one after another with their robes and hats.

Liu Chan shouted at the soldiers and horses entering the city at the head of the city: "The military camp in the south of the city has prepared mutton and ginger soup and dry clothes, and quickly return to the camp to change into clean clothes and drink soup to ward off the cold, so as not to be infected with the wind and cold." ”

"Thank you, Your Majesty!"

The soldiers under the city thanked Liu Chan while running towards the barracks.

Zhang Ren arched his hand and said: "Your Majesty, when I came, I saw that the upper reaches of the Han River were blocked, could it be that Your Majesty planned to accumulate floods to deal with Fancheng?" ”

Liu Chan said with a smile: "That Hu quality makes people accumulate soil outside Fancheng, and they want to use it to defend against the return artillery, and now it is the rainy season, so I will cut off the river to store floods, and when the flood comes, the earth and mountains will naturally be razed to the ground." ”

"I see!" Zhang Ren, who had just arrived, Deng Ai suddenly realized after listening to Liu Chan's words.

"Let's go, it looks like this rain is going to fall for a while, Deng Ai will accompany me to play two games of chess." Liu Chan looked at it for a while, saw that the rain showed no signs of abating, picked up the umbrella beside him and went down to the city.

Xu was not raining in April, the rain in May was extraordinarily heavy, the heavy rain fell for five days in a row before it ended, these five days, the rain has not stopped, although it has not been the kind of pouring rain, but the flood accumulated in the upstream has been enough to flood Fancheng.

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