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

So the question is, the current overall strength of the demon tribe and barbarians is not as good as Dachuan, but what about the future?

Don't forget, the demon clan also has a monkey with excellent qualifications and immortality.

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

Do you rely on the salted fish of Heavenly Master?

It is better to hope that the old sow will climb the tree.

By that time, the demon clan will inevitably invade the Central Plains on a large scale, firstly to kill Han Yun for revenge, and secondly to invade the Central Plains and expand their living territory.

When that time comes, will the Western Regions just sit back and do nothing?

They will definitely take the opportunity to send troops and invade the territory west of Dachuan.

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

He had already thought about the possibility of demons bypassing Yumen Pass to invade the people, and the Loulan Kingdom in the Western Region had even done this.

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

That is, create two more natural dangers.

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

If your own country's army and caravans want to pass through, they can just pass through Yumen Pass.

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

Moreover, in this way, the defenders of Yumen Pass only need to defend the west and north sides, and the defense forces can be more concentrated to deal with the enemy, getting twice the result with half the effort.

There is no need to worry that the armies of the Western Regions and the Monster Clan will find it impossible to reach Yumen Pass and will detour from other places.

If the army of the Western Regions enters from the plateau mountains thousands of miles west of Qinchuan, then they will not be able to move too far as logistical supplies cannot be transported, and they will starve to death.

Therefore, for them, the best way is to pass through Yumen Pass and take the flat road in the Hexi Corridor.

The enemy would never be able to defeat Yumen Pass, and Han Yun never felt that his formation was truly invincible.

If the demon clan and the Buddhists are really determined to attack Dachuan with all their strength, then his formation will be broken with the joint efforts of several second-level people.

When the time comes, these strong men will be responsible for fighting against the opponent's second level, and they will have to rely on the soldiers of Yumen Pass 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 beads among his eight wonder beads, and used the power of the earth and mountains in them to cast spells next to the Great Wall.

Under the stunned gaze of the soldiers at the end of the Great Wall, a tall, ten-meter-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 very tall, very broad, and very smooth.

Call it a wall, it is a rock structure.

Call it a mountain, but it is extremely flat.

This is a mountain range, more than ten meters high, dozens of meters wide, and stable.

The side of this artificial mountain is a smooth surface similar to ninety degrees, which ensures that flies will slip on it, and above it is an extremely flat runway, which can be used for the deployment and support of one's own troops, and also for learning.

Like the Great Wall, a female wall is extended for shooting arrows.

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

In this way, even if the enemy uses ladders to cross the man-made mountains and enter the interior, Yumen Pass can still send cavalry from the east gate to kill the infantry, which is equivalent to closing the door to beat the dog and catching the turtle in the jar.

Moreover, the enemy troops will not cross the mountains too fast, making them easy to defend.

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

The passage is only that wide, no matter how many enemy troops there are, the enemy troops we have to face on the Yumenguan wall are only at the front. We can completely defeat the enemy troops with more and less, and wear down the enemy troops.

It can be said that Han Yun thought through all the tactics that the enemy could use, and then developed tactics against the enemy so that the soldiers at Yumen Pass could benefit from an invincible position.

Then, he spent a few days building an artificial mountain chain connecting Yumen Pass to the Qilian Mountains in the south, completely blocking the originally wide-open terrain.

Then, he went to Nie Ze and asked him to send troops to two new mountain ranges, build beacon towers and forts, and arrange for soldiers to be stationed and patrolled.

It is done completely according to the standards of the Great Wall.

Seeing this miraculous scene, the soldiers and civilians at Yumen Pass were dumbfounded, and at the same time they all praised Zhenbei Hou's miraculous achievements.

This is a great cause that will benefit the future and benefit the future.

With these two towering and steep sections of the Great Wall, they no longer had to worry about enemy troops bypassing Yumen Pass to harass the people.

Yumen Pass has really become a natural pass.

After Han Yun finished doing these things, he returned to Yumen Pass to rest.

At the same time, the reinforcements led by Zhao Long and Xie Xing also arrived in the western part of Qinchuan and began to kill all the enemy troops they saw.m...

The western part of Qinchuan is full of high mountains, as well as forts built on mountaintops and passes. These are military strongholds. Many of them have been captured by the enemy, but there are still more forts that have not been occupied.

There are not many enemy troops stationed in these forts. Most of the enemy troops are gathered in the saddle area between the mountains, where the terrain is relatively gentle and suitable for large armies to be stationed.

But there are not many people stationed here. The enemy troops are scattered and stationed. At the same time, because of the lack of food and grass, they have suffered from a large-scale famine. Many bark, grass and roots in the mountains and forests have been eaten by them.

It's over.

Now both they and the defense forces are riding a tiger, and are in short supply of food and grass.

They cut off the food routes for the defense forces. At the same time, because there were so many of our own, it was difficult to transport food and grass domestically, which made them hungry for a long time. Many wounded soldiers even starved to death due to lack of food and grass.

When the Zhenbei Army and the Yuejia Army arrived, they faced a group of enemies that were difficult to hold a sword.

What else can you say? Just hit him!

Like wolves and tigers, the Zhenbei Army and the Yuejia Army launched a charge towards the enemy.

Zhao Long and Xie Xing's tactics were very simple. The Yue Family Army outflanked the two flanks, Zhenbei Army broke through the center, and after overwhelming the enemy's camp, they wiped out the enemy army.

The enemy troops had no choice but to run to both sides, and then they encountered the Yue Family Army outflanking them.

Zhao Long and Xie Xing used this tactic to defeat the enemy's garrison one after another, and easily pulled out the forts where the enemy garrisoned. The war went smoothly.