Outside Fancheng, in the Jingzhou military camp.

Guan Yu had already returned with his troops, and the military doctor was bandaging Guan Yu's wounds, and Guan Ping on the side asked worriedly: "Military doctor, how is my father's injury?" ”

The military doctor smiled: "Don't worry, the general's injuries are fine, and he will be healed in a few days." ”

"That's good!" Guan Ping breathed a sigh of relief when he heard this.

Ma Liang on the side bowed his hand to Guan Yu and persuaded: "Junhou, now that Yu Ban is leading reinforcements to come, and you have been wounded by an arrow, it is better to withdraw for the time being!" ”

Guan Yu's face sank and said, "I'm about to capture Fancheng, how can I retreat?" ”

Ma Liang sighed and said, "It's not easy to deal with it!" ”

"Hmph, I can be caught in the forbidden horseman!" Guan Yu held his injured left arm in his right hand, came to the map, pointed to the map and said, "Strategist, look at where the forbidden army is stationed!" ”

Ma Liang came to the front of the map, looked at the map and said, "Zengkou River, twenty miles north of Fancheng!" ”

"Not bad!" Guan Yu nodded and said: "It's the middle of July now, the weather is hot, there are high mountains and mountains on both sides of the Zengkou River, which can shade the sun and avoid the sun, and there are mountain breezes blowing during it, it is indeed a good place to escape the heat, but it is a taboo to camp here!" ”

"Oh?" Ma Liang stroked his beard and groaned: "The prince is talking about water? However, the terrain of the Zengkou River is more than 30 miles away from the Hanshui, and the terrain is not too low-lying. ”

Guan Yu shook his head and said, "It's naturally not enough to just build a dam to store water, you still need the help of heaven!" ”

"It's raining?" Ma Liang muttered: "In the past month, although it has rained several times, it has been showers, although it is heavy, but it will stop after a while, and this kind of rain is afraid that it will be difficult to flood the Zengkou River!" ”

Guan Yu sat back on the handsome case, stroked his beard and said: "I have been in Jingzhou for nearly 20 years, and I often observe the climate around the Han River, and the rain has not been strong in the past month.

But these three days, the weather is extremely hot, I expect that there will be heavy rain in the past few days, even rain falls, this is a God-given opportunity for me to break the enemy! ”

"Speaking of which, it's really hot!" Ma Liang nodded when he heard this, and touched the sweat on his forehead.

Guan Yu fled with Liu Bei to Jingzhou to attach himself to Liu Biao in 200 AD, and then stationed in the Xinye area, during which he also captured Fancheng and defended Fancheng.

Until the outbreak of the Battle of Chibi in 208, Guan Yu left Nanyang, and later Liu Bei captured Jingzhou, Guan Yu has been running around Jiangling, Xiangyang and other places.

Up to now, Guan Yu has lived in Jingzhou for 19 years.

In addition, Guan Yu is also a general in charge of guarding Jingzhou, and no one knows more about the climate of Jingzhou, especially the climate of the Han River and the Yangtze River.

Guan Yu ordered to Guan Ping: "Ping'er, you quickly take someone to secretly go upstream to cut off the Han River, I expect that heavy rain will fall within three days!" When the time comes, Yu Ban, Yan Xing Pifu, will be determined to be a turtle in the urn, and our army in Fancheng can also break through in one fell swoop. ”

"No!" Guan Ping gave up his hand to receive the order.

Guan Yu said again: "In addition, the people near Fancheng, if you take a boat to the south bank of Xiangyang, I will send troops and horses to intercept the scouts of the forbidden army, and not give them a chance to go out of the camp to find out the news."

On the Xiangyang side, mobilize more boats and rafts over, which will be of great use at that time. ”

The crowd gave up their hands: "No! ”

Subsequently, Guan Ping led 3,000 soldiers and horses to the upper reaches of the Han River to build a dam and hoard river water.

Guan Yu also sent Guan Xing to lead the cavalry to wander outside the forbidden camp day and night, so as not to be known by Cao's scouts.

Two days later, at night, there was thunder and lightning, and sure enough, it rained heavily.

The heavy rain continued to rain until dawn, and there was no sign of slowing down.

Guan Yu and Ma Liang stood in the big tent of the Chinese army, looking at the pouring rain outside the camp, Ma Liang was overjoyed: "Junhou, this heavy rain still does not show the slightest tendency to slow down, as long as it rains for three days, the accumulated rain is enough to flood Zengkouchuan!" ”

Guan Yu stroked his long beard and looked at the heavy rain outside the camp with a hint of a smile in his eyes.

On the other side, Liu Chan Pang De and others led 3,000 soldiers and horses to Shandu County.

Shandu, belonging to Nanjun, is located at the foot of Jing Mountain, the south bank of the Han River, twenty miles to the east is the Longzhong where Zhuge Liang lived in seclusion, in the east is Xiangyang, and across the Han River to the east, is Fancheng.

Liu Chan led his troops out from Shangyong, so naturally he would not rashly enter the enemy-occupied area on the north bank, he planned to go to Xiangyang first, and then go to join Guan Yu after finding out the situation on the north bank.

However, Liu Chan could not continue the march at this moment, because after arriving in Shandu, it suddenly rained heavily.

The soldiers and horses entered the city and camped, and Liu Chan and Pang De and other generals wore hats and stood at the head of the city looking at the Han River in the north.

"Shizi, Fancheng is in that direction!" Pang De pointed to the northeast direction and said: "It is less than eighty miles away, and when the rain stops, you can meet General Guan all the way." ”

Liu Chan looked up at the sky and muttered, "Look at this, this rain may be a few days away." ”

"Someone's coming!" Pound raised his eyebrows and looked to the east.

The mountain capital city is not big, it is said to be a county, but in fact, it is only the size of a town, standing at the head of the north gate, but you can see the situation outside the east gate.

When Liu Chan heard this, he looked east, only to see that in the heavy rain, several cavalry rode horses and rushed over.

"Let's take a look!" Seeing this, Liu Chan walked in the direction of the east gate.

When he came to the east gate, the cavalry had already entered the city, and Liu Chan got off the city and was bumping into the cavalry entering the city.

"According to the order of General Guan, a dam will be built upstream to store water on the same day, the mountain capital is located on the bank of the Han River, the city is short, I am afraid that it will be flooded, and the people of the mountain capital city will immediately move to Xiangyang!" The cavalry held the arrow in his hand and said to the county commander in the city.

"Flooded Seven?" Liu Chan listened to the words of the cavalry, his eyes lit up, and he stepped forward and asked the cavalry, "What is the situation in Fancheng now?" ”

"Who are you?" When the cavalry saw Liu Chan and his entourage, they asked vigilantly.

Liu Chan couldn't help but smile and said: "Zhang Bin, you are my Guan Ping brother's personal soldier, I still chose it for him back then, I still know you, you don't know me anymore?" ”

Liu Chan said, slightly raising the hat on his head.

"Childe? No...... The Son? Are you the son of the world? Shizi, why are you here! Cavalry Zhang Bin saw Liu Chan's appearance clearly, and couldn't help but exclaim.

Liu Chan was only six years old when he left Jingzhou, and the soldiers could not recognize Liu Chan's identity from Liu Chan's current appearance. The reason why he recognized Liu Chan was because he became Guan Ping's personal soldier back then, and he was chosen by Liu Chan.

Liu Chan smiled and asked, "Where is Guan Ping?" ”

The cavalryman Zhang Bin replied: "The general is not far upstream, and he is building a with his brothers!" ”

Hanshui originates in Liangzhou, flows through Hanzhong, Shangyong and other places, but out of the Shangyong mountains, its mainstream converges in Wudang County, Nanyang County, and then the main stream goes down, and suddenly flows eastward when it reaches the mountain, forming a right angle.

The place where Guan Ping led his troops to build the embankment was in the vertical line at right angles, in the north of the mountain capital, in the territory of Nanyang County, where the Han River was relatively narrow. On the west bank of the vertical line Hanshui is the Shangyong Mountains, with high terrain, while on the east bank is Fancheng, which is relatively low.

Build a dam there, and the water will automatically rush in the direction of Fancheng.

If a dam is built on a right-angled horizontal line, when the flood comes, the southern bank of the river will be low, and it will be difficult to flood the Zengguchi River on the north bank, and the flood will instead rush into Nangun, causing harm.

"Upstream? Take me to him! As soon as Liu Chan heard that Guan Ping was not far north of the mountain capital, he hurriedly asked the cavalry to take him to see Guan Ping.