In the original history, Liu Bei relied on the support of Liu Pi and Gong Du to gather more than 10,000 troops in Runan, and then blocked Cao Cao's pursuit of him, so that he had the opportunity to retreat to Nanyang, Jingzhou, so that he could attach himself to Liu Biao and start a new chapter in his life.

Therefore, Runan County has not recovered from the Yellow Turban War, and the local area can be regarded as a chaotic mess, completely in the small division of the local Yellow Turban remnants and the powerful forces of the Shi clan.

Of course, today's Runan County is nominally under the control of Yuan Shu, after all, Runan County was originally Yuan Shu's hometown.

The Yuan family's power in many counties and townships in Runan is still very well-established, and the powerful forces of the scholar clan in many places are also under the banner of the Yuan family, but Yuan Shu can only be regarded as a remote leader on the Runan side, and there are not many troops stationed here.

This is just like the remote state of Xuzhou Chen Qi and Chen Deng's father and son for Guangling County, which is actually a nominal control.

It can be said that Yuan Shu's main garrison area in the land of Yuzhou in Huaibei is located on the side of Pei County, and then he has just obtained the land of Chen State, and he seems to have bypassed the side of Runan County in particular, and did not allocate a little force to control here.

Maybe Yuan Shu also hopes that he can make Runan's hometown not have anything to do with his rebellion, so that he can leave a way out in Runan's hometown.

In the later period, Yuan Shu fled to Runan County, which can be regarded as returning to his hometown, and it is estimated that with Yuan's influence in the local area, Yuan Shu can get some local support on the Runan side.

However, just relying on these local forces in Runan County, of course, they did not dare to compete with the more than 20,000 troops of Mu Lan, Teng Yuyan, and Zhang Xiu who had now entered Runan County, so when they entered Runan County, they basically did not encounter any opponents who dared to resist.

It can be said that wherever the army passed, the county towns of all sizes took the initiative to open the city to greet them, and the yellow turban thieves and the like hidden in Runan County took the initiative to avoid three points, and did not dare to come up to find death.

It's just that there isn't much oil, water, and grain to be fished in the land of Runan, so it can be said that there is nothing worth harvesting except for the troops controlled by the remnants of the Yellow Turbans.

But now Mu Lan, Teng Yuyan, and Zhang Xiu are not here to clean up and absorb the remnants of the Yellow Turban, so they just marched to the side of Ruyin County in accordance with their military instructions, blocking Yuan Shu's possible escape from Shouchun to Runan County.

In this way, Zhu Wei has already seen that the light cavalry and Liangqi battalions of Mu Lan, Teng Yuyan, and Zhang Xiu have been outflanked by the light cavalry and Liangqi battalions of Runan County through the map function of the Three Kingdoms game system.

Then Zhu Wei sent Huang Zhong's Jiangdong battalion to attack Lu'an, as long as he opened up several counties in Lu'an, he could contact Mu Lan and them in Runan County.

In this way, Zhu Wei's side also formed an arc-shaped encirclement line from east to west and then to the north, blocking the possibility of Yuan Shu escaping from Shouchun to the south like a pocket.

Now unless Yuan Shu leaves his old base camp Shouchun, leaves Pi and flees to the north to join Yuan Shao, he can only stay in Shouchun City and wait for death.

Anyway, after Zhu Wei made such a military arrangement, the army temporarily stopped in Hefei and did not continue to march to Shouchun, and after Huang Zhongshuai led the Jiangdong battalion into the territory of Lu'an, it was really like a bamboo, and almost encountered any obstacles to move forward smoothly.

Three days later, Huang Zhong had already captured the five counties of Lu'an, and contacted Mu Lan, Teng Yuyan, and Zhang Xiu, and then Huang Zhong collected his troops and returned to Hefei, and the cavalry commanded by Mu Lan, Teng Yuying, and Zhang Xiu also approached the side of Lu'an.

Of course, although Zhu Wei's side did not move much in Hefei County, he also sent a lot of small troops to Chengde County, which was close to Shouchun, and then passed through Chengde County and entered Shouchun to explore the garrison intelligence of Yuan Shu's army.

This Chengde County can also be regarded as the intermediary line between Hefei and Shouchun, Yuan Shu sent troops to garrison here again, and this side can be regarded as the outermost line of defense against Shouchun.

And in the southwest direction of Shouchun and Chengde, there is a big lake called Wabu Lake, which is formed by the accumulation of water in the lower reaches of the Dongqi River, and communicates with the Huai River through the Dongqi River, and has also become an important natural reservoir in Shouchun.

However, when there was a great drought in the Jianghuai River before, the Wabu Lake was almost visible, but after the spring of this year, it was instilled with rain and Jianghuai River water to restore the original water volume.

In fact, the place where Shouchun is located can be said to be surrounded by water on all sides, the west and north are the Qianli Huai River, the east is the Dongqi River, the south is the Wabu Lake, and the surrounding more than 4,000 square kilometers of water flow almost all have to flow through Shouchun.

However, compared to the surrounding area, Shouchun is a low-lying place, so it is easy to encounter floods.

In fact, after checking the surrounding environment and terrain of Shouchun, Jia Xu in Zhu Weijun also offered a strategy, or he could build a dam to store water on the side of Wabu Lake, and dig a dam to release water when the amount of water is sufficient, so as to impact Shouchun with floods, so that all the defenses outside Shouchun City can be destroyed without a fight, and perhaps the flood can also be used to reduce the threat of Shouchun's city defense.

It's just that Zhu Wei is still a little hesitant, after all, in addition to Yuan Shu's army on Shouchun's side, hundreds of thousands of ordinary people have also gathered, if it is really according to Jia Xu's strategy and flooding Shouchun, the result will be very tragic.

At the same time, Zhu Wei seems to have read some information in his previous life, and it is said that Nashouchun City itself seems to have a good drainage capacity.

Perhaps because of the geographical environment where Shouchun City is located, when Shouchun City was built, the city builders had already considered the possibility of flood threat, so when the flood broke out, it was often flooded outside Shouchun City, but there would not be much water in the city.

It can be said that if there is a flood outside Shouchun City, you can rely on the walls of Shouchun to keep the flood out of the city like a barrage.

However, the stagnant water in the city can be connected to the underground drainage culvert with the help of the sewer in the city, so that the stagnant water in the city can be discharged to the moat outside the city, and it seems that the ancients used the principle of siphon to use the underground drainage culvert to suck the stagnant water in the city into the moat outside the city.

Therefore, even if Shouchun City is hit by floods, there will be no water accumulation in the city, and since ancient times, Zhu Wei seems to have never seen in the history books that there is a case of digging water to attack the city on Shouchun's side.

In fact, the lakes and rivers surrounding Shouchun, coupled with the Bagong Mountain standing in the north of Shouchun City, have become the natural barrier of Shouchun City, making Shouchun City a strategic place of the so-called "control and choke Huaiying, take the river and Tuo, be the key point of the northwest, and the shield of the southeast".

Thinking of this, Zhu Wei vetoed Jia Xu's plan to flood the water, no wonder in the original history, Cao Cao's attack on Shouchun was also a strong attack, and he did not use any tricks.

Of course, Shouchun City also has a water gate, maybe according to the past example, blowing up the water gate to attack the city is also a method, but now Zhu Wei has blown up the water gates of many cities with a blasting bamboo tube, so now Shouchun City is afraid that it has already taken precautions against this......