In fact, as far as the geographical environment and actual situation of the four counties of Jingnan are concerned, there are really no conditions for garrisoning large armies to guard them.

Especially for Liu Biao, the current lord of Jingzhou, the four counties of Jingnan also belong to the form of chicken ribs, it can be said that Liu Biao has no control over the county seat of the four counties of Jingnan except for sending people to control the county seat of the four counties of Jingnan, and the other counties located in the mountains of the four counties of Jingnan basically have no control.

These county towns hidden in the mountains, although they are also some small earthen cities located in the mountains, are controlled by local powerful sect thieves, and in many mountains there are more barbarian tribes who do not obey the control, even if they take these small county towns in the mountains, they may not be able to restrain the barbarians in the mountains around the county seat.

What's more, it is not easy to bring these county towns located in the mountains under the direct control of Jingzhou, and many places are impassable, and the march and logistics are more troublesome.

And even if you spend time, energy, and money to attack it, how many troops can you send to control these territories?

As the local powerful clan of the head snake, or it can be said that the sect thief Shanyue, when you send troops to attack, you can hide in the surrounding mountains first, and wait for your army to leave, and then come back to recapture these county seats.

At the same time, they may be able to use their involvement with the barbarians in the mountains to create a big rebellion here, instigate the barbarians to rebel in all directions, and completely stir up Jingzhou's control over the four counties of Jingnan.

The four counties of Jingnan were originally places like Guangxi and Xiangxi in later generations, and for the rulers, they were poor mountains and bad waters, and they couldn't fight cleanly, so they could only let it go.

As for the county seat of the four counties of Jingnan, it is actually impossible to raise too many soldiers here, and how many troops can you put here?

Putting too much is a waste, and putting too little is meaningless.

And Liu Biao's main forces are in Nanyang County and Nanjun in Jiangbei, so the four counties of Jingnan have become dispensable, and they can't bring much money and grain taxes to Liu Biao.

Originally, after Liu Bei got the four counties of Jingnan, he let Zhuge Liang develop them, and Zhuge Liang took a lot of time to digest and absorb the four counties, which can indeed be regarded as completely controlling the territory of the four counties of Jingnan, and even turned the four counties of Jingnan into a grain-producing place in Xishu.

It's a pity that not long after it was developed, the four counties of Jingnan were recaptured by Eastern Wu, and Guan Yu was defeated by Maicheng, so after Xishu lost Jingzhou, it basically ruined the possibility of Xishu's growth, and it can be said that it also lost the heritage of the Northern Expedition to the Central Plains.

And now for Zhu Wei, the four counties of Jingnan next to Yuzhang are a piece of cake fat that can be eaten at any time, since it is not possible to directly attack the hinterland of Liu Biao in Jingzhou now, then eat this piece of fat first.

Previously, Zhu Wei was also a little hesitant in his heart, and also felt that the four counties of Jingnan had too many mountains and mountains, and they were not as rich as Jiangxia, Nanjun, Nanyang County and other places, so he attacked Jiangxia first before and did not choose the four counties of Jingnan.

But now Wang Yuyan and the others have analyzed the value of the four counties of Jingnan for Zhu Wei, but Zhu Wei has seen a little bit of the benefits of the four counties of Jingnan.

The four counties of Jingnan should be difficult to attack and defend, which is a chicken rib for Liu Biao in Jingzhou, but for Zhu Wei, who controls Yuzhang, it can be turned into his own hinterland to develop.

Anyway, the four counties of Jingnan and Yuzhang are all south of the Yangtze River, and they are all adjacent boundaries, as long as Zhu Wei seals Yuzhang and constructs a Jiangfang camp in the aforementioned Xiaoling County, he can swallow these four counties into his belly, and it is a matter of time before the four counties of Jingnan are completely digested.

At the same time, the four counties of Jingnan may not have much population on the surface, but those mountain people, Shanyue and even barbarian tribes hidden in the mountains can also become the hidden population unearthed by Zhu Wei.

Zhu Wei has a military general like Zu Lang who is good at mountain warfare in his hands, so he can naturally ambush those county towns hidden in the mountains little by little.

In the original history, since Zhuge Liang could develop the four counties of Jingnan as the grain production base of Western Shu, then now Zhu Wei should also be able to use the four counties of Jingnan as the future rear henchmen to provide Zhu Wei with abundant food.

Therefore, Zhu Wei finally accepted the attack strategy of the four counties of Jingnan given by Wang Yuyan and began various military preparations.

Of course, it cannot be said that Liu Biao completely left the four counties of Jingnan alone, in fact, he placed 10,000 taels or 3,000 troops such as Liu Pan and Huang Zhong on the side of Youxian County, Changsha County, and he also wanted to use Changsha County to defend against Jiangdong's invasion of the four counties of Jingnan.

The official road of the four counties of Jingnan leads to the side of Yuzhang, and it mainly passes through Changsha County to continue to connect with the other three counties, so the side of Youxian has become the main frontier of the four counties of Jingnan facing Jiangdong.

However, Zhu Wei is now very clear about the military strength of the four counties of Jingnan.

The four counties of Jingnan, that is, Changsha County, have some troops, and the other Guiyang counties have about 5,000 troops, and Lingling County has about 8,000 troops, and as for Wuling County, it is estimated that the strength is not much.

In addition, according to the results that Zhu Wei saw through military intelligence, the combat effectiveness of the soldiers in the four counties of Jingnan is not very strong on the whole, it can be said that in addition to the troops under Liu Pan and Huang Zhong on the side of Changsha County, although the troops under Han Xuan, Liu Du, and Zhao Fan have these thousands of troops, their training and morale preparation are very poor, and they are simply a rabble.

Therefore, now according to the strategy discussed by Wang Yuyan, Pang Tong, and Huang Yueying, Wang Yuyan can go to Changsha County, which has the largest number of troops, in the name of Zhu Wei, to fight against Liu Pan and Huang Zhong stationed in Youxian County, Changsha County, and open up the passage into the four counties of Jingnan.

With the strength of Liu Pan and Huang Zhong, even if it is combined with the 4,000 troops on Han Xuan's side, it may not be the opponent of Zhu Wei's army commanded by Wang Yuyan, not to mention that there is Wei Yan who was persuaded by Zhu Wei to log in on Liu Pan's side, which can naturally play a more effective role as a surprise soldier.

Then Wang Yuyan attacked Changsha County on a large scale, and maybe he even deceived the soldiers and horses of Guiyang, Lingling, and Wuling Counties to come to Changsha to support, so that the Yueshan battalion commanded by Zhu Wei and the 4,000 Chinese troops led by Dong Xi and Pang Tong could go over the mountains into Guiyang County to launch a sneak attack, and then take Lingling County directly from Guiyang County.

In this way, the two places can send troops at the same time, and the war in the four counties of Jingnan can be ended in the fastest time.

It can be said that this strategic key step in attacking the four counties of Jingnan was to use Zhu Wei's ability to carry grain and grass supplies with him, so that Zulang's mountain camp and Zhu Wei's 4,000 crossbowmen could safely cross the mountains and enter Guiyang County for a sneak attack.

Otherwise, even if Zu Lang's mountain battalion is good at mountain warfare, and those who cross mountains and mountains are not afraid of getting lost, the logistics supply will also affect the success rate of the sneak attack, and the logistics supply of more than 10,000 troops is not something that everyone can do with some food.

In short, this time it is necessary to at least take Guiyang County and Lingling County before Liu Biao reacts and sends troops to support the four counties of Jingnan, so it is a big deal to face off with Liu Biao's reinforcements in Wuling County.

Because only Wuling County is located in the north of Hunan among the four counties in Jingnan, it belongs to the alluvial plain landform of Dongting Lake and the rivers and lakes of Hunan, Zi, Yuan and Li, and the terrain environment is simple, and it can also be regarded as a land of fish and rice south of the Yangtze River.

Therefore, in the decisive battle with Liu Biao's army in Wuling County, you can avoid Liu Biao's people and advantages in Nanjun and Nanyang County, and you can fight with Liu Biao's army on the plain landform, so that both sides have a certain geographical advantage, and then it depends on who is stronger in the strength of the armies on both sides......