The Invincible Overlord of Heroes.

Tahan and his large cavalry were watching from outside, preventing Kerrigan from fully concentrating on attacking the city.

Without taking Graycastle and without a ground passage, the main force of the Burning Legion will not be able to advance westward.

In fact, Kerrigan had little interest in moving westward. He just wanted to destroy Xu Lai's main force.

So, wherever Xu Lai and his troops are, Kerrigan will fight there until the troops are destroyed or Xu Lai is killed.

It was just right that the Western Empire could be taken back. After all, in order to transform the terrain of the Western Empire, Kerrigan also sacrificed a lot of resources and souls.

If we can't take it back, we must at least defeat Xu Lai once to restore the morale and spirit of the Burning Legion.

In order to prevent Tahan from interfering with his attack on Graycastle, Kerrigan sent out his own army of fire elves.

After incorporating Briston's defense forces, there were quite a few Fire Elves and Fire Elves in the Burning Legion.

The reason why Kerrigan named it the Burning Legion is because the main force of this legion is composed of lava trolls, fire trolls, fire elves and fire elves.

These are all fire immune units that can deal massive amounts of fire damage.

There are many kinds of demons in hell, including those that fly in the sky, walk on the ground, and wear clothes underground.

But there are only a few things that are really worth showing off.

The Fire Elves, who are extremely effective against melee troops, the Lava Trolls, who have a large range of long-range power, and the Evil King, who are the most important for the pig-raising tactics.

Chasing those cavalrymen with the speed of the Evil King and the Evil God would be useless except for being treated like dogs and running away.

Moreover, although the whipping skill that the Evil King is good at has an advantage in attack range over melee combat, his body is extremely fragile, and his defense and health are not as good as those of the Long-Horned Warlord.

The role of the Evil God King is more auxiliary, and he is also an important means for the Hell camp to continuously produce mid-level troops.

In today's situation, with only a few Hell Cities left, Kerrigan is reluctant to consume the only remaining evil god.

Lava Trolls seem to have the advantage in range, but cavalry are the least afraid of ranged units.

Unparalleled speed, led by a high-level, highly talented cavalry hero, will unleash unparalleled impact.

Although our side had the advantage in the previous attempt, that was because the number of our shooters was hundreds of times that of the knights.

Even though the Lava Troll in the back was blocked, the output of the shooters was far less.

Unless Kerrigan still has a force hundreds of times greater than the cavalry, then perhaps both sides will suffer losses in the fight.

But don’t say that Kerrigan didn’t have it. Even if he did, he wouldn’t be willing to give it up.

Although the Fire Elves could not catch up with the cavalry, they were also unable to attack from a distance.

But as long as these things are within the coverage range of Kerrigan's heroic abilities, human cavalry will never dare to attack.

Because even if they could kill the Fire Spirit, they would definitely be killed by the rebound.

Even if one rebound doesn't kill, two or three can kill a high-level knight.

Kerrigan could fully afford this amount of casualties, and he wouldn't feel sad even if all the fire elves died.

But as far as he knew, these were all that existed in and around Graycastle in the Eagle Kingdom.

Once this batch of cavalry was consumed, Kerrigan's main goal would be half achieved.

To be honest, he actually hoped that these cavalrymen would die together with the fire elves.

Without the restraint of these cavalrymen, he waited another half a month and personally led the demon army into the Grey Valley to block the human retreat.

Then, a forbidden fire spell directly killed all the humans in the city.

But with this cavalry, Kerrigan had to prevent them from attacking his troops from the front and back, which would not only prevent them from rushing out of the city, but might also defeat his Burning Legion.

After Kerrigan sent out the Fire Elves, Tahan and the others indeed retreated, not daring to get too close.

That group of fire elves did not dare to actually attack the cavalry.

Once they get close, they will be beaten badly by the archers. Even if the casualties will not be too great under Cregen's protection, it will be a wasted loss.

They are fast, but with the blessing of the Knight's Wind Banner and Tahan, these knights cannot be caught up by the Fire Elves even without the blessing of divine speed.

Even if we have the advantage of flying path, we don't know how many arrows we will suffer from the archers if we catch up. After catching up, we don't know whether we will still have Kerrigan's protection.

If not, Tahan would have used a magic scroll and cast a fire-controlling spell to launch a charge, and the casualty ratio between the two sides would have been unacceptable to Kerrigan.

The knights were driven away, but they no longer had their flying legion, and the thousands of abyss demons they recruited were of little use.

Humans have the advantage of defending cities. Whether it is long-range or ultra-long-range units, humans have the advantage.

Kerrigan also did not intend to send lava trolls to attack the city. These trolls might not be able to defeat humans even if they stood on their own city walls, let alone attack the foot of the human city.

Kerrigan placed high hopes on his other auxiliary force, the Crypt Fiends.

Xu Lai and Lena attacked the Western Empire separately for such a long time, and they saw and killed many Winged Demons.

The only thing he had rarely seen was the Crypt Demon, which was known as the Twin Demons of Heaven and Earth along with the Winged Demon.

In the sky, Kerrigan has more useful fire elves and big demons.

Therefore, Kerrigan had little interest in keeping the Winged Demon, whose speed could not surpass that of the Great Demon and whose combat power was so weak that it could not even defeat lower-level infantry.

However, the crypt demon's combat power is not that strong, and its sneak attack is quite powerful.

But the uses of the Crypt Demon are more extensive than those of the Winged Demon, because this thing can dig holes in the ground.

Of course, the crypt demons don't really dig holes in the ground, but use their unique control over earth magic to travel underground.

The troops defending the city often overlook the underground troops because they can see the enemies in the sky but cannot see the targets underground.

The number of crypt demons is huge, and their sudden disappearance is likely to fail to attract the attention of scouts.

Moreover, they need to consume magic power to travel underground, so it is impossible for them to travel all the way from Briston to Graycastle.

However, even though he had discovered the problem, Xu Lai didn't have any better solution and could only order everyone to be on guard.

It takes a lot of magic power for the crypt demon to travel underground, but when it waits underground, it is almost like hibernation.

If you eat your fill and go underground, you can stay there for at least three or four days.

Xu Lai could not determine their exact location, nor could he determine the timing of their attack.

Apart from asking the ground troops to be careful with their steps, he could only ask the soldiers in charge of reconnaissance to pay close attention to the movements underground.

Although the demons outside the city had surrounded Graycastle early on, they did not make any moves to attack the city.

Not only did they not have catapults or siege towers, they didn't even have the simplest ladder.

Although Xu Lai is the commander of the legion, he only wants to cover Tahan and Lena with his own attributes.

The actual command of the battlefield is still in Lena's hands.

This gave Xu Lai a lot of free time, and he held up the telescope and observed the layout of the opposite demon camp. The fire demons that were rarely seen at ordinary times also appeared in thousands in Xu Lai's sight.

It was difficult for him to count them one by one, but a conservative estimate was that the number of fire demons was over 3000.

There are far more lava trolls, at least tens of thousands.

Tens of thousands of fireballs bigger than bathtubs hit the city wall. Xu Lai didn't dare to imagine the scene.

Fortunately, over the past half month, Graycastle has received support from thousands of craftsmen, tens of thousands of helpers, and Qingfeng City at all costs.

Not only were all the previously damaged buildings repaired, but several new arrow towers were also added and more catapult platforms were built.

The phantom archers have all moved into the arrow towers with powerful bonuses.

On the city walls, there are also tens of thousands of sky archers who have reached high levels. The rest of the archer masters and the like are not even qualified to climb the city walls as the main force.

On the city walls, in addition to the sky archers, there are also royal guards who are responsible for protecting them with shields.

There were also Crusaders and golden-armored warriors who prevented the enemy from climbing up the city walls and engaging in close combat.

As for the Seraphs and the Angels of Sin, Xu Lai would never move unless the enemy's demon army came out.

To be honest, Xu Lai was quite looking forward to the demons' siege. After all, his side had a huge advantage in city defense and its military strength was not weak either.

However, Kerrigan didn't think so. He was like a seasoned hunter, quietly waiting for the most favorable opportunity for him.

After the two sides confronted each other for a whole morning, Xu Lai finally lost his patience.

Kerrigan and the Burning Legion he led were three kilometers away.

At this location, except for some advanced catapults on the city wall, other means have no effect.

But such a long distance obviously exceeds the optimal attack range of most catapults.

Except for a few high-level catapults enchanted with range, which can still maintain full damage, the damage of other catapults needs to be halved.

However, with the power of the catapult, even if the damage was halved, killing a few demons would be a piece of cake.

The key point is that after exceeding the optimal range, the catapult's hit rate, which is already low, will drop again.

Both sides were well aware of this, so Kerrigan placed his main force 5 kilometers away and his outposts three kilometers away.

Xu Lai originally didn't want to waste ammunition. The demons three kilometers away were extremely scattered, and many of them didn't even have shadows in the sun.

Obviously, those were created by Kerrigan using the mirror technique to confuse the audience.

The purpose of doing this is very simple, which is to consume the ammunition of the defenders.

It’s a pity that he is different from all the other besieged people.

Graycastle does not have a teleportation array, and there is no need to block the teleportation.

Xu Lai, who owns the warehouse ring, will have an endless supply of supplies as long as Qingfeng City does not fall and as long as the warehouse is not destroyed and needs to be rebound.

Only a few people know this secret.

Even Kerrigan, Patton and others only knew that Xu Lai had sufficient supplies, but they never thought that Xu Lai had an entire city to back him up.

The inherent impression of the demons is that humans have abundant supplies.

Like Lionheart City, Kerrigan used an endless supply of Abyss summons for nearly a month, but still failed to completely consume Lionheart City.

At this time he was planning to use the same trick again. Anyway, he had the Gate of Hell that he had snatched from the Cerberus, and he could continuously summon demons from hell.

Unfortunately, Mendis was killed by Xu Lai, and all the abyss lords under his command were also killed or wounded.

These remaining abyss demons and abyss lords cannot sustain too many troops no matter how much mana they have.

Xu Lai had no shortage of ordinary ammunition anyway. If magic ammunition wasn't too expensive, he would have planned to use magic ammunition.

Dozens of huge rocks whizzed out and smashed towards the demon army in the distance.

The reinforced city wall was already wide, and Xu Lai also added several platforms, nearly doubling the number of catapults.

With the support of Reina's ballistics, even though most of the boulders were beyond the optimal range, nearly half of them still hit the target.

The huge rock brought a lot of smoke and dust. Xu Lai saw countless demons shattered into pieces through the telescope.

This guy Kerrigan was indeed cunning and sly. Xu Lai thought that the demons in the first row were a mixture of real and fake, but he didn't expect that they were all mirror images.

If the demons really launched an attack, Xu Lai would have thrown all his most powerful magic ammunition at this group of mirror images, which would have been a huge loss.

Of course, in order to prevent being deceived by the devil again, Xu Lai directly ordered all the catapults within range to smash him hard without worrying about the consumption of ammunition.

Although mirror images can confuse people, even if you don't break them, they can still cause actual damage.

But mirror images are also extremely fragile, and any damage can shatter them.

Most of the huge rocks that hit the area will break into pieces.

Originally, these pieces of gravel would not do much harm to the thick-skinned demons, but they would be deadly when facing these mirror images.

This is also the reason why the demons disappeared in large numbers even though they were hit by only a dozen boulders.

When Xu came here, he even had a super catapult that could launch a catapult more than ten kilometers away, so he didn't have to just focus on smashing this row of demons.

When the demons in the front row were bombarded, Kerrigan remained indifferent and even felt complacent that the mirror image worked.

But when the troops in the rear were also hit, he felt uncomfortable.

After all, you can only take the beating and cannot fight back.

"Haha, the human king is still too immature. He loses his temper so quickly."

The hit rate is only 50% at a distance of three kilometers. At a distance of five kilometers, not only is the number of catapults that can be launched reduced by one third, but the hit rate is also only about 30%.

If the demon army was more sparse, the hit rate might drop to 20%, and not many demons would be killed even if it took a whole day to attack.

But no matter how small the number is, their deaths are in vain. In the past, Kerrigan would have been too lazy to even adjust his position.

Now he not only ordered the troops to move back, but also constantly mixed in mirror images and specially made fake demons.

Except for using treasures such as telescopes for observation, or possessing reconnaissance skills, ordinary shooters cannot see targets more than 5 kilometers away even with the vision bonus of the city wall.

The fake demon doesn’t even necessarily need to be in human form, as long as it’s made a little darker.

Although Xu Lai saw it, there was nothing he could do. He couldn't use those catapults himself.

In this way, based on the principle that people rest while the catapults do not, the boulders continued to fall until it was almost dark.

The demon, which had been pushed back by the boulders and now was 7 kilometers away, finally made a move. (End of this chapter)