In order to implement the prison tactics, Liu Yuan spared no effort, he was not in a hurry to attack Guyuan, but set up camp in the critical passes of Niexian, Tongti, Huguan, Tunliu, Changzi, and Qishi counties around Guyuan, and at the same time sent troops to garrison Pingyang and Yong'an in Hedong County, which are adjacent to Guyuan to the west, forming a large encirclement from afar, besieging the Shu army in an area with Gu Yuan as the center within a radius of no more than 100 miles. Pen, fun, and www.biquge.info

The Shangdang area is mountainous, often there are only one or two roads connecting between the counties, the Huns stuck the passes, they can completely block the passages in and out, and these passes are dangerous, easy to defend and difficult to attack, the Huns do not need to send a lot of troops to hold on.

The purpose of the Huns is very clear, that is, to compress the living space of the Shu army, the Shu army of 30,000 horses, the amount of grain and grass required every day is also a lot, only a county of land, it is difficult to get enough supplies, the Huns implement the iron wall encirclement, the ultimate goal is to trap the Shu army.

The implementation of the cage tactics is indeed a great test for the Shu army, although Gu Yuan is a relatively large county in Shangdang, but for the Shu army of 30,000 people, Gu Yuan is too small, plus the Han people in this area were slaughtered, there are no two or three out of ten, the Shu army relies on the popular base is too weak, it is simply unable to provide the Shu army with the soil needed for survival, and now the Huns are stepping up the deployment of the defense system, and once this "cage" is built, it will be a fatal blow to the Shu army.

And the fatality of this "cage" is that even if the Shu army breaks through one or two passes and enters other areas, it cannot break the overall defense system of the Huns, and the Huns can use the original defense system to rebuild a new "cage" and trap the Shu army in the new area.

Liu Yuan's purpose was to form a defensive network similar to a spider's web in the Shangdang area, and to encroach and compress the living space of the Shu army step by step by sticking to the passes and dangers, no matter how the Shu army entered that area, it could not get rid of the siege of the Huns.

Originally, the strategy of the Huns was to chase the Shu army, but the Shu army was good at mountain warfare, flexible and changeable, and every time the pursuit of the Huns failed, in the end it was not only exhausting, but also difficult to find a battle at all. Now after changing the strategy, the Huns no longer have to be tired of running for their lives, but stick to one stronghold after another, waiting for work, and responding to all changes with the same, no matter how the Shu army tosses, as long as it is in the encirclement, it is difficult for them to escape.

The current situation is indeed very grim, and Huang Chong and the generals all believe that in the current situation, the best way is to make a detour to the outer line to fight, and take advantage of the fact that the enemy's encirclement has not yet been completed, and the Shu army will take the initiative to jump out, or go north to Taiyuan County or west to Hedong County, to avoid the enemy's strong 'cage'.

However, leaving Shangdang means the failure of going south, and whether it is Taiyuan County or Hedong County, the terrain is much flatter than Shangdang, such terrain is actually not conducive to the infantry as the main body of the Shu army to fight, the cavalry-based Huns will obviously have the upper hand, and the situation of the Shu army will become more and more difficult.

Only an area with complex terrain and rugged mountain roads like Shangdang is the most ideal combat platform for the Shu army, so no matter what strategy the Huns adopt, they cannot shake Liu Yin's determination to take root in Shangdang.

Now the Huns are building pass fortresses around Guyuan, in a vain attempt to trap the Shu army in the Guyuan area, there is still a way to deal with this crisis, that is, to divide the troops to fight, open up a new base in the Shangdang area, and expand the power of the Shu army to the east and south of Shangdang, so that the two sides will form a new situation of dogs and teeth, the Huns use the pass fortress to divide and encircle the Shu army, but after the Shu army formed a number of base areas, in turn also carried out counter-encirclement of these passes and fortresses, As long as the Shu army can develop its own strength, it will naturally not be afraid of the encirclement and suppression of the Huns.

After Liu Yin put forward his plan, Huang Chong said with some concern: "Sun Tzu Youyun: If the winning army is called Eridium and the defeated army is called Eridium by baht, our army has repeatedly divided its troops and scattered troops, isn't it against the art of war?" ”

Liu Yin smiled and said: "Concentrating superior forces is indeed the only magic weapon for winning battles, but Sun Yun also said that those who know the number of people win the battle, that is to say, it is important to know when to allocate the number of troops. When to concentrate and when to disperse, we must take measures according to local conditions, according to the conditions of the time, concentration is to annihilate the enemy, dispersion is to preserve oneself, when it should be concentrated, when it should be dispersed, it must be dispersed, and it is possible to be invincible only when the opportunity is changeable. ”

Huang Chong said shamefully: "The general is far-sighted and strategic, and we are ashamed of ourselves." ”

Liu Yin smiled and said: "General Huang has an overreputation, the opportunity to change, judging the situation is something that every general should be familiar with and master, the art of war is dead, the situation on the battlefield is alive, if you read the art of war to death, it can only become Zhao Kuo who talks on paper." The Huns wanted to expel us from the Shangdang, but we did not fulfill their wishes, the Shangdang is a treasure land, can be attacked, retreated can be defended, a high house, overlooking the Central Plains, in the future to compete for the world, the Shangdang can be the first important place. ”

"Then what can we do to gain a foothold in the party?" Huang Chong asked.

Liu Yin didn't answer immediately, but hit the army and spread out a military map, Huang Chong and the generals surrounded him, Liu Yin pointed to the map and said: "The Yong'an army can stay in Guyuan and continue to fight, while the Tiger Infantry Army and the Tiger Cavalry Army advance to the east and south respectively." The Hubu Army can establish new bases in the areas of Xiangyuan, Luxian, and Huguan, which is the Taihang Mountainous Area, with dangerous terrain and surrounded by mountains and rivers, which is most conducive to mountain warfare. The Tiger Cavalry Army entered the area of Hyun and Gaodu to the south, the terrain of this area is open, which is conducive to cavalry combat, and at the same time there are two big mountains of Taihang and Wangwu, and the greater the room for maneuver. What's more, the Tiger Infantry Army went to the eastern region of Shangdang, adjacent to Jizhou, and can echo the right army that entered Jizhou, and the Tiger Cavalry Army entered the southern region of Shangdang, adjacent to Hanoi, the Huns want to build a new cage system in the Gaodu area, they must face the Jin army Yanghu Department, and then they will also suffer from the enemy, whether they can take care of themselves is still a big problem. All in all, this division of troops is to bloom more and stretch the Huns' defense line, don't look at the Huns, who claim to be 100,000 horses, and really want to build a copper wall, he is still too far behind. (To be continued.) )