Sure enough, after Yanghu arrived, the Jin army's strategic system in Jizhou had a major adjustment, and the garrisons of Zhaoguo, Julu, Anping, Leling and other counties were withdrawn, and even Jizhou Chengxin took the initiative to give up. Pen, fun, and www.biquge.info

I have to say that Yanghu's courage and courage to give up the four counties of Jizhong seem to many people to be a little incredible, but Yanghu did not hesitate to do so, and even the withdrawal of the counties was very hasty, without giving the Shu army any chance to pursue.

Although the soldiers took the four counties of Jizhong without bloodshed, Liu Yin's brows were furrowed, and Yanghu's method of shrinking his forces to Yecheng was indeed more clever.

Originally, the Jin army's defense deployment in Jizhou was like a palm stretched out, although it covered all the counties of Jizhou as much as possible, but the Shu army could attack from any point, and easily cut off one or several fingers of the Jin army. Now that Yang Hu has put his palm back, it is like clenching his fists, and it will be very difficult for the Shu army to find its flaws.

According to the information currently available, the Jin army retreated to southern Hebei, forming a defense system with Yecheng as the center and radiating hundreds of miles around.

The southern Hebei region is all vast plains, and this kind of plain area is very conducive to cavalry combat, now in the cavalry battle, the Shu army has occupied a clear advantage, once dominated the world Wei and Jin cavalry now has the advantage of gone.

In the plain area, if you want to deal with the impact of the horse, the more effective means is to rely on the city, the Jizhou Plain has long been ravaged by the Hu cavalry, so the city construction of the Jizhou Plain is very tall and strong, and it is the Yecheng of the northern capital of the Wei and Jin Dynasties, which can be compared with a big city like Luoyang Chang'an.

However, no matter how strong the city is, it has become a joke in front of the Shu army, thinking about the fate of Chang'an City, no one has any illusions about sticking to Yecheng.

Cavalry is not good, and defending the city is even worse, so doesn't that mean that the Jin army's defense system in Jizhou will become a mess? But Yanghu found another way and thought of using deep trenches and high bases to deal with the Shu army.

Of course, this kind of deep trench and high fortress combat method was not invented by Yanghu, in the previous wars, the soldiers had widely used, but such a large-scale use of trench tactics in a range of hundreds of miles is absolutely unprecedented.

Trenches are undoubtedly the most effective means to deal with cavalry, especially the kind of trenches that crisscross and are connected to the trenches, the mobility of the cavalry is completely contained, even if it is infantry, it is very difficult to break through these trenches when the opponent is defending.

Of course, the trench also has a great weakness, that is, the trench is dead and cannot move, which restricts the opponent's attack at the same time, but also seriously hinders the maneuverability of its own side.

Now the Jin army is weak in attack, and it is not possible to fight defense, so it can only use this way of resisting the battle with high bases and deep trenches, temporarily hold Yecheng, and keep the last territory of the Jin State north of the Yellow River, just as the Jin State loses all the territory north of the Yellow River, it will really be a general trend.

On the surface, it seems that Yanghu's defensive means are extremely clumsy, but it is completely set up to restrain the advantages of the Shu army, and the city of Yecheng cannot be attacked, the firearms of the Shu army are useless at all, and the cavalry of the Shu army is even more difficult to find a breakthrough in front of the dense trenches.

Even Fu Yan and Luo Xian frowned, they had fought countless battles, but they had never fought like this, and it was indeed not easy for the Shu army to take Yecheng.

"I didn't expect Yanghu to use such a method, if you want to take Yecheng, it seems that it will take some time." Luo Xian said.

Liu Yin said: "Yanghu is divided into prisons, although Yecheng looks as solid as a rock, but it also seriously limits the ability of the Jin army to move, since Yecheng is in a hurry, it is better to fight the plain Qinghe first, simply kill the Yellow River, and see how much he can do to defend Yecheng." ”

The Jin army is currently divided into two parts in southern Hebei, Yanghu led an army of 100,000 to defend Yecheng, and Ma Long led more than 70,000 troops to defend the Qinghe Plain. Although the Jin army gave up the four counties in Hebei, it is impossible to give up several counties in southern Hebei, especially the plain Qinghe, the plain Qinghe is the gateway to Qingzhou, if the plain Qinghe is abandoned, it is equivalent to the door of Qingzhou is opened, and if the Shu army burns the war to Qingzhou, the situation of the Jin country may become more and more critical.

After all, the Qinghe River in the plain is distributed along the Yellow River, and the defense line is too long, so if you really want to dig all the trenches, the amount of work is too large, so Ma Long's defense in the plain Qinghe is still based on normalcy.

It was not easy to fight on Yecheng's side, so Liu Yin immediately turned the spearhead and decided to fight Ma Long in Qinghe in the plains first, and then turn around, and then it was not too late to clean up Yecheng's Yanghu.

This time to fight the plain Qinghe, Liu Yin decided to use Luo Xian's right army and the tiger cavalry army of the middle legion, the right army and the tiger cavalry army are all cavalry, and the plain Qinghe area is gentle and low-lying, which is the most conducive to the action of the cavalry. Liu Yin led the middle army and the left army to form a joint siege of Yecheng.

After Luo Xian received the order, he immediately marched south, took the empty city of Xindu, which had been abandoned by the Jin army, and drove south, pointing directly at the boundary bridge.

Jieqiao is not a bridge, but an ancient town located on the Pan River, where Yuan Shao and Gongsun Zhan fought a big battle in order to control Jizhou, so the small place of Jieqiao was able to become famous all over the world.

Although the boundary bridge is small, it is an important passage from Julu and Anping to the Qinghe Plain, Ma Long wants to defend the Qinghe Plain, first of all, he must first hold the boundary bridge, so the Jin army gathered a large number of men and horses here to garrison, Luo Xian went south from Xindu, and the first target of the attack was the boundary bridge.

Thousands of horses, wolf smoke rolling, tens of thousands of Shu army iron horsemen rushed south, mighty, swallowing like a tiger.

This was the first active offensive operation of the Right Army in Jizhou, and it had been a defensive battle before, but this time it was finally their turn to raise their eyebrows. (To be continued.) )