Achievement system: I am cultivating immortals in the world of martial arts

So here comes the question, the overall strength of the Yaozu and barbarians is not as good as that of Dachuan, so what about in the future?

Don't forget, Yaozu also has a monkey with excellent aptitude and immortal body.

Once that monkey breaks through the second rank, or the first rank, who in Dachuan can stop it?

Do you rely on the salted fish of the old master?

It might as well hope that the old sow will climb the tree.

At that time, the monster clan will inevitably invade the Central Plains on a large scale, first to kill Han Yun for revenge, and second to occupy the Central Plains and expand their living territory.

When that time really comes, will the Western Regions just sit back and watch?

He will definitely take the opportunity to send troops to occupy the territory in the west of Dachuan.

If it was still early at that time, and Han Yun is still thinking too far, what about now?

He had already thought of the possibility of the monster race bypassing Yumen Pass to harass the people, and even the Loulan Kingdom in the Western Regions had already done so.

So whether it is to prevent this kind of thing from happening again in the future, or to prevent the Western Regions from taking the opportunity to invade the western part of Dachuan during the future war, Han Yun must do one thing.

That is, create two more natural dangers.

One connects the Great Wall and Yumen Pass, completely sealing off the access to Dachuan from the north, and the other connects Yumen Pass to the west end of the Qilian Mountains in the south, sealing off the access to Dachuan from the west.

If the army and caravans of one's own country want to pass through, they just need to pass through Yumen Pass.

If the enemy's army wants to pass, it will have to face the head-on attack of the Yumen Pass defenders.

And in this way, the defenders of Yumen Pass only need to defend the west and north, and the defense force can be more concentrated to deal with the enemy, which is more effective.

There is no need to worry that the Western Regions and the Yaozu army will think that Yumen Pass cannot be broken, and they will detour from other places.

If the army of the Western Regions entered from the plateau mountains thousands of miles west of Qinchuan, they would wait for the logistics supplies to be delivered, and they would not be able to go too far, and they would be starved to death.

So for them, the best way is to take the flat road of Hexi Corridor through Yumen Pass.

The enemy will not be able to break the Yumen Pass, Han Yun never felt that his formation was really invincible.

If Yaozu and Buddhism really made up their minds to attack Dachuan with all their strength, then his formation would also be broken with the joint efforts of several second ranks.

At that time, these strong men will be responsible for fighting against the second rank of the opponent, and they will have to rely on the Yumenguan soldiers to resist the enemy.

Thinking of this, Han Yun left Yumen Pass again and flew to the Great Wall. Then, he took out the Gen and Kun two-character beads among his eight strange beads, and used the power of the land and mountains inside to start casting spells beside the Great Wall.

Under the stunned gaze of the soldiers at the end of the Great Wall, a tall, more than ten meters high...strange thing rose from the ground.

To be honest, with the knowledge of the soldiers, it is really difficult to describe what kind of thing this is.

It is tall, generous, and flat.

Say it is a wall, it is a rock structure.

Call it a mountain, it is extraordinarily flat.

This is a mountain range, more than ten meters high and tens of meters wide, the bottom is slightly wider than the top, and the cross section is a trapezoid, which can make it more stable.

The side of this man-made mountain is a smooth surface similar to [-] degrees, which ensures that the flies will slip on it, and the top is an extremely flat runway, which can be used for dispatching support by one's own army, and also learn Like the Great Wall, a female wall was extended to attack with arrows.

Han Yun built the city wall of the mountains all the way, extending to the east of Yumen Pass, and connecting with the northeast corner of the city wall of Yumen Pass, the height is the same.

In this way, even if the enemy troops used ladders to cross the man-made mountains and entered the interior, Yumen Pass could send cavalry from the east gate to kill the infantry, which was equivalent to closing the door to beat dogs and catch turtles in urns.

Moreover, the speed of the enemy's crossing the mountains will not be too fast, so it is easy to defend.

If the enemy captured the top of the mountain and attacked the city wall of Yumen Pass by relying on the corridor above, then they would have to face the rain of arrows overwhelming Yumen Pass.

The passage is so wide, no matter how many enemy troops there are, the enemy troops to face on the wall of Yumen Pass are only at the front.

It can be said that Han Yun has thought through all the tactics that the enemy can use, and then he has also researched tactics against the enemy, so that the soldiers of Yumen Pass can be invincible.

Then, he spent a few more days building a man-made mountain range connecting Yumen Pass to the Qilian Mountains in the south, completely blocking the open terrain.

Then, he went to Nie Ze and asked him to send troops to two new mountain ranges, build beacon towers and fortresses, and arrange soldiers to garrison and patrol.

It was done entirely according to the standards of the Great Wall.

The soldiers and civilians at Yumenguan were dumbfounded by this miraculous scene, and at the same time they all praised Zhenbeihou's miraculous achievements.

This is a great cause that works in the present and benefits in the future.

With these two towering and steep sections of the Great Wall, they no longer have to worry that the enemy troops will bypass Yumen Pass to harass the people.

Yumen Pass has really become a natural pass.

After finishing these things, Han Yun returned to Yumen Pass to rest.

At the same time, the reinforcements led by Zhao Long and Xie Xing also came to the west of Qinchuan, and began to kill all the enemy troops they saw.

The west of Qinchuan is full of high mountains and fortresses built on the top of the mountains and passes. Those are military strongholds. Many of them have been taken down by the enemy, but there are still more fortresses that have not been occupied.

In these fortresses, there are not many enemy troops stationed, and more enemy troops are gathered in the saddle area between the mountains. The terrain there is relatively flat and suitable for large troops to station.

However, there are not many people stationed here. The enemy troops are scattered and stationed. At the same time, because of the food and grass, they have a large area of ​​famine. Many bark and grass roots in the mountains and forests are eaten by them. It's over.

Now both they and the defense army are riding a tiger, and food and grass are in a hurry.

They cut off the food supply of the defense army. At the same time, because there were too many people on their own side, it was difficult to transport food and grass in the country. As a result, they had been hungry for a long time, and many wounded soldiers were starved to death without food and grass.

When the Zhenbei Army and the Yue Family Army arrived, they faced such a group of enemies who could hardly hold a knife.

What else to say, just hit!

The wolf-like Zhenbei Army and the Yue Family Army launched a charge towards the enemy.

Zhao Long and Xie Xing's tactics were very simple. Yue's army outflanked the two wings, and the Zhenbei army broke through in the center. After smashing the enemy's camp, they killed the enemy.

The enemy army had no choice but to run to both sides, and then they would encounter the Yue family army who had outflanked them.

Zhao Long and Xie Xing used such tactics to defeat the enemy camps one after another, and easily pulled out those fortresses where the enemy troops were stationed. The war went smoothly.