The Invincible Overlord of Heroes.

There are twelve cities of various sizes near the Grey Valley.

The smallest one, covering only three or four acres, is located at the entrance of Grey Valley. It is a militarized fortress with almost no living facilities.

Of course, a castle with such a small area of ​​only 2000 square meters cannot accommodate too many troops.

However, this small fortress was built quite solidly. Not only did it have steep slopes on both sides, but its walls and arrow towers were also reinforced models.

In addition, the walls of this fortress called Little Gray Castle are completely enclosed.

After you have built the walls with the Heart of the Castle, you can hire a stonemason to add a spire to the walls.

Because of the Heart of the Castle, building according to the buildings provided by the Heart of the Castle can not only greatly save materials, but more importantly, it requires very little time.

Before Xu Lai, the city wall of Qingfeng City could be repaired in one day. However, after it was demolished and rebuilt, it took more than half a year even with the help of the Heart of the Castle.

This is after recruiting a large number of farmers, and even upgrading them to builders and construction workers.

An ordinary fortress would never cost so much time, effort and money to build.

But Little Graycastle is different. It controls the only passage in and out of Grayvale.

The terrain of Grey Valley is narrow, and the widest spot can only accommodate 5 or 6 riders side by side.

The Little Gray Castle is located at the entrance, with high slopes on both sides, and has now been transformed into lava terrain.

Gray Valley is a place that Cregan personally oversees. Even though it has not been completely transformed yet, it is mostly completed.

No one knew how many demons were lying in ambush on the hillsides on both sides of the volcanoes and lava traps.

Xu Lai was sure that there must be ambushes of demons on both sides.

Even if Jian Yuan has reconnaissance skills, it is hard to say whether he can find the ambush. Even if he does, there will definitely be more than one ambush.

Xu Lai had to wait for Lena to gather anyway, so he was not in a hurry to occupy Little Gray Castle, let alone send troops from both sides of the valley.

Little Gray Castle was not big, and it was difficult to form a large frontal formation. It was obviously not feasible to rush in all at once.

Xu Lai did not have many siege equipment such as crossbows and catapults, but they were of good quality as they were captured from the city of Kasai before.

It's also thanks to the lightning storm that it is only interested in moving, living things and has no reaction to mechanical things like houses and equipment.

Besides, the devil is not so stupid as to think that he can rely on these devices to block the damage of lightning. At least he should find a covered place.

Unfortunately, the city of Kasai was damaged too badly and many pieces of equipment were accidentally damaged. Some equipment still needs to be repaired before it can be transported here.

But these are enough for use.

The structure and size of Little Gray Castle meant that it couldn't deploy many city defense devices.

The demons inside could only watch as Xu Lai used the catapult to smash down the arrow tower and city walls of Little Gray Castle bit by bit.

But Little Gray Castle was built extremely solidly, especially the top of the city wall, which required an average of three hits on the same part to break through.

Arrow towers have higher durability. To knock down an arrow tower, you need to hit it at least ten times.

Obviously, the standard arrow towers in fortress cities do not have such high durability and defense.

This level can be compared with a castle city.

Of course, that refers to ordinary castle cities.

Not to mention a capital-level city like Qingfeng City, even the reinforced arrow tower of Wanshi City is stronger than this.

While attacking the city, the crossbowmen operating the catapults and the catapults themselves will also be attacked by the lava trolls in the arrow tower.

Fortunately, these arrow towers have not been transformed into Fire Demon Towers. They only increase the range of the Lava Trolls, and the power increase is not as terrifying as that of the Fire Demon Tower.

Even so, under the constant treatment of the priest, crossbowmen continued to fall to the ground and die.

In fact, the death of some crossbowmen is not a big deal. After all, there are a large number of priests specializing in treatment, and a group of crossbowmen can last for a long time.

And after their death, they can be immediately resurrected by the angel army. For Xu Lai, there is no loss at all.

However, the catapults were destroyed one by one under the constant destruction of the flames, which made Xu Lai feel very distressed.

As a mechanical unit, this thing cannot be resurrected.

But fortunately, the materials can be reused. As long as there are enough craftsmen, we can at least restore 7% to 8% of the damage, if not %.

Even if we are going to war outside now, there is no stable and reliable city in the rear.

Not to mention recruiting craftsmen, even if there were craftsmen, there would be no suitable place for production and repair.

In other words, the existing catapults are becoming less and less as they are used, and there is no way to replenish them in a short period of time.

Therefore, after destroying all the arrow towers, Xu Lai ordered his troops to pack up the catapults and make way for the infantry.

Many gaps were smashed into the city wall.

Using a long ladder with a hook on the top to reach in was enough to support the infantrymen to enter.

Although the top of the wall of Little Gray Castle was a spire, there was still a small square frame left every few meters, which was the reserved shooting hole.

Whether they are archers or crossbowmen, humans are not big in size, so one shooting hole is enough for several people.

There are not many large-sized ballistas, catapults, and small gray castles, so there is no need to make special holes.

Little Gray Castle was not a fortress built entirely according to the Castle Heart. There were traces of reconstruction and processing everywhere.

Therefore, the demons cannot completely transform this fortress by polluting the heart of the castle.

This is also the reason why the Arrow Tower was not changed into the Fire Demon Tower.

The demons naturally have no way to forcibly change the city walls that have been processed in the same way, unless they tear them down and rebuild them.

But obviously, the demons were not willing to do so.

As for the demon archers, Magog’s are relatively small in size, and one shooting hole can accommodate two or three of them.

But the fire trolls and lava trolls need to hunch over to walk in this capped city wall, and there are simply not enough shooting holes for them to use.

But even so, Xu Lai was reluctant to waste the catapults and would rather let the infantrymen who arrived at the camp first launch the charge.

In addition to the infantry, Xu Lai also dispatched a group of priests to provide cover.

The priests have higher defense than the pastors, and the Little Gray Castle is guarded by only a demon general, and the attribute bonus given to the soldiers is not high.

The demons are certainly not without heroes. Even if we don't count Mendis who escaped back, there is still a demon hero in charge of this Grey Valley.

But this little gray castle is too small and cannot accommodate too many defensive soldiers.

Whether it was Mendis or the other demon hero who had not shown up, they all knew that this small gray castle would inevitably be lost.

Besides, Xu Lai still has the advantage of air force, so he won’t easily advance from both sides of the valley.

But if the defending general escapes, Xu Lai will never let him go. It will not be difficult to send a few experts to kill him.

Considering this situation, the two demons certainly did not want to stay and wait for death.

The bonus is not much, and the priest and high priest are level 5 and 6 professionals, with buffs applied, and are protected by Xu Lai's fire control magic.

The key point is that behind the priests, there are priests who are responsible for healing. Even the front-line warriors of the Vanguard Camp have priests and high priests who can heal them.

This circular stepped layout can take all of these into consideration and also allow the priests and high priests that Xu Lai needs most now to gain the most experience.

The priests used magic attacks. Although the attack range of this type of attack was not as good as that of the archers, the hit rate was much higher than that of the archers.

Although the shooting hole is not big, the priests stand far away, so it can accommodate several light balls at the same time.

Behind the shooting holes are fire trolls and lava trolls whose huge bodies mean there is nowhere to hide even if they want to.

The small city wall was filled with huge demons, so much so that it was extremely difficult for the charging vanguard soldiers to squeeze into the city wall for street fighting.

It was also thanks to these soldiers from the Vanguard Camp that Xu Lai had sent the infantry from the Qingfeng Legion.

The spearmen were fine, at least they could poke their spears at the top of the ladder.

If it were a sword and shield soldier, he would probably not be able to cut a gap for himself even after a year of fighting.

Even with god-level offensive skills, the basic attack is not high and it is still difficult to break the defense of high-level demons.

The only demon building in this small gray castle is the demon birth pool.

The birth pool has two functions for demons.

One is to hatch little demons. Whether they are food for higher-level demons or slaves, little demons are very useful.

Another function is that it can be used to heal wounds and treat injured demons.

Now there are only a few gaps that can be used for attack. If these people were not well-equipped and basically had skills at hand, it would be difficult to break the situation for a while.

However, the soldiers who reach the camp first can rely on warrior skills such as charge, shield attack, powerful attack, and sweeping the army to seize a place on the city wall.

Due to the narrow terrain and crowded demons, the soldiers of the vanguard camp were unable to carry out effective rotation.

More importantly, although the priests knew simple healing techniques, they could only use them when the first soldiers to arrive at the camp appeared in their sight.

In other words, those who were either climbing ladders outside or killed at the shooting hole could not receive effective treatment.

Of course, in addition to Xu Lai using healing spells.

Xu Lai's spirit value is not low, and one healing can restore a lot of health.

Moreover, due to the size of Little Graycastle, the scale of the war was not large, and Xu Lai had many opportunities to cast spells. Basically, he could release a round of spells in about five minutes.

Unfortunately, health points are easy to recover, but physical strength is really impossible to recover.

Especially the soldiers who entered the camp first, they had various skills and were very fierce, but they could not last long.

The warrior profession does not have a high mana value, so most of the skills actually consume physical strength.

Actions like charging, charging, and striking all consume multiples of your physical energy.

After fighting for an entire afternoon, the soldiers of the Xiandeng Battalion on the front line were exhausted, and Xu Lai had to order a retreat.

Fortunately, they had the upper hand, and even if they retreated, they could take away their own bodies calmly.

This is a mandatory requirement, after all, as long as you have a corpse, you can live.

If you don't take away the bodies of your companions, then in a blink of an eye, your former companions will become food for the devil.

If it was a real siege, the Xiandeng camp would not have been able to take down the city wall.

But as long as Xu Lai can replenish the soldiers of the Qingfeng Legion in time, he can still firmly occupy a section of the city wall.

However, Xu Lai was not in a hurry. Moreover, after nightfall, human vision was blocked and the demons would inevitably launch a counterattack.

Xu Lai was originally waiting for Lena to come over and meet him, so he was not in such a hurry.

The next day, after eating and drinking, he repeated the same trick.

However, a section of the city wall that was seized yesterday has been reoccupied by the demons.

They even repaired the city walls and patched up the holes in them.

The devil cannot do it, there must be human craftsmen in the city.

However, as long as the city walls are still being destroyed, these craftsmen should be fine for the time being.

After all, there is enough food stored in Little Graycastle, so the demons don't need to rush to eat people.

In the morning, the first batch of soldiers seized a section of the city wall, and in the afternoon they were replaced by the Qingfeng Legion's spear and shield soldiers.

Although the attack power of heavy shield infantry is not very good, their defense is extremely strong with the heavy shield.

Although the demon is at a higher level, it has no offensive skills, and its large shield has strong defensive power, and it also has the ultimate defensive skills and the Angel Alliance to protect it.

In this situation, as long as the heavy shield soldiers can protect their bodies and not expose their bodies outside the shield, it will be impossible for the demons to break through the defense.

Heavy shield infantrymen can even put away their swords and concentrate on defending with their shields in both hands.

The spearmen behind them, however, were able to use the advantages of their spears to attack the demons in front of the heavy shield soldiers.

There are 5 points of strength and constitution bonus provided by the statue of the god of war, as well as the resistance of the spearman brothers behind.

Even though the demons were generally more powerful than humans, they were unable to defeat humans' gun and shield formation for a while.

With Xu Lai in charge and when he does not participate in the battle, the tactics also provide a lot of additional attributes.

This bought the human infantry corps a great deal of time, allowing them to continuously expand their territory on the city wall.

When night was about to fall, the spear and shield soldiers occupied half of the territory on the city wall without any long-range support.

By the third day, the catapults had completely lost their threat.

The enemy's limited ranged forces had all been wiped out by the priests, and a lot of their manpower had also been killed.

Although we still failed to take down all the city walls today, we killed thousands of high-level demons.

In the end, the demons couldn't even send out troops like the Marshal, whose rank was not very advantageous.

They can only rely on the horned demons summoned by the evil gods to fight.

The horned demons have no advantage over humans in terms of level.

If Xu hadn't come when it was already late, they should have been able to take over all the city walls that day.

By the fourth day, the demons on the city wall had begun to thin out, and there was no need to send advance troops to seize a breakthrough.

Xu Lai did so. Compared to those who had to go to the camp first, the new recruits of the Qingfeng Corps needed to upgrade their levels more.

The demons received a death order, so even though they knew they had no chance of winning, no one dared to escape.

With others not scrambling for experience, Xu Lai spent four days and finally captured the small gray castle.

And successfully liberated more than 300 human craftsmen imprisoned in Little Graycastle.

At the same time, the average level of the Qingfeng Legion's infantry was finally raised to level 5, and more high priests and a small number of little angels appeared.

After occupying the Little Gray Castle, Xu Lai planned to use it as a base to clear out the uphill areas on both sides. (End of this chapter)