The Invincible Overlord of Heroes.

Unlike the cavemen who passed by before, the giant dragon that Xu Lai was staring at looked back as if he was sensing something.

Xu Lai was not surprised. If this giant dragon was really Moriel's transformation, then Moriel, who was good at magic, might have a higher mental value than him.

Such a terrifying mental value brings an extremely keen perception.

Although the two sides were thousands of miles apart, Moriel still sensed Xu Lai's prying eyes.

Through this kind of perception, Moriel also easily discovered the investigative eye that Xu Lai had arranged here.

Moriel was too lazy to slowly search for the disguised reconnaissance eye among a group of spore mushrooms. She directly opened her big mouth and spit out a mouthful of blazing fire.

Immediately, Xu Lai lost his investigative eyes in the maze, and there was no way of knowing how many giant dragons came out of the maze.

"Ring the bell and prepare to fight!"

Taking a deep breath, Xu Lai issued the first official order after arriving in the dungeon.

The alarm bell on the fortress was sounded, and the dull sound could spread farther underground.

Reina, who was commanding the front line, changed her expression, knowing that the enemy who had imprisoned her for more than 50 years had appeared.

As soon as the order flag was raised, there was no need for the officers to convey the order this time. All the infantry soldiers who heard the alarm gathered their shields and retreated to the rear in an orderly manner.

The archers behind the infantry did not need to be so troublesome. Under the leadership of Giselle, they could gather their bows and arrows, turn around, and trot away in formation.

Giselle pushed onto the supply truck and followed behind the shooters.

There was also constant movement in Mingyue City. The infantrymen who had been stationed in the city for a long time, under the orders of their respective officers and commanders, put on their armor and picked up weapons as quickly as possible.

The city walls should be built up, and the city gates should be blocked.

Even the recruited farmers, led by Wang Chao and logistics officers, climbed up the city wall carrying a large number of crossbows.

Although Giselle has not returned yet, the top commander of the archer force, Dill Rogers, has led all the phantom archers to the arrow tower behind the city wall.

A standard arrow tower can accommodate about 4-5 people, and construction is allowed at the town level.

Although Xu Lai has been acquiring castle hearts, unfortunately, he has only raised enough castle hearts to upgrade to the fortress level.

This also means that Mingyue City cannot be upgraded to the base camp for the time being, and Xu Lai cannot yet build the main arrow tower, which is also the ultimate form of the arrow tower.

However, fortress-level cities can already upgrade their arrow towers to reinforced types, which have better defense, higher durability, and more bonuses.

The bonus of the main arrow tower is 100% power, range, and field of vision, but the number is limited. Two auxiliary arrow towers are required before the construction of a main arrow tower is allowed.

The enhanced arrow tower that Xu Lai is building now is the auxiliary arrow tower. The three major attribute bonuses are 75%. It is stronger than the arrow tower and weaker than the main arrow tower. It allows 6-8 people to occupy it.

There is no limit on the number of auxiliary arrow towers, so when Xu Lai asked Yu Lan to build more, she upgraded them all to auxiliary arrow towers and increased the number of arrow towers to a full 25.

Mingyue City spent all its main city defense construction on the side where Moriel would attack.

The other three city walls are just ordinary city walls for the time being, and the arrow towers are just ordinary arrow towers, and there are not many of them.

Only this side has reinforced city walls and reinforced arrow towers, and the arrow towers are so densely packed that the distance between them is less than 3 meters.

There are 25 arrow towers. If the maximum number of people is placed in each tower, it can accommodate 200 people.

However, Xu Lai asked 10 people to be squeezed into each arrow tower, even if the shooting port could only accommodate up to 8 people to attack at the same time, at most the other two would be used as backup and assistance.

In addition to the arrow tower, there are also a large number of archers stationed in various towers.

Dill set an example and led more than a hundred explosive shooters to the city tower.

The rest of the master archers and magic archers also climbed onto the turret at the edge of the city wall.

The crossbowmen's treatment was slightly worse. They could only stand behind the city wall and rely on the battlements on the city wall for protection. There was no protection above their heads.

The Black Dragon is a flying unit, and the city wall is not very useful, so crossbowmen cannot be the only ones placed on the city wall. Dill's swordsman army and Brandy's shield-bearing infantry are also all arranged on the city wall.

The most powerful knight is of little use on the city wall.

Therefore, except for Roland and the Paladins he led, Xu Lai was left outside the city wall.

Tahan and the cavalry regiment he led, including the knights recruited by the Qingfeng Legion, were all abandoned in the city.

Because Mingyue City had to block the entire passage and relied on the mining field, it had no worries about ore resources, so it was built very large from the beginning.

However, in the huge Mingyue City, apart from manors, city walls and various recruiting buildings, there are almost only some residential houses used for rest.

Therefore, Mingyue City is very large and open enough.

The walls of Mingyue City already occupied a lot of space. Xu Lai didn't know how many dragons Moriel had, but his more than a hundred angels alone occupied a large corner of the sky.

Moriel's black dragon must not be fully unfolded.

It was impossible for her not to let the black dragons rush into the city to cause damage. These knights would lose a lot of combat power anyway if they climbed onto the city wall. When these black dragons entered the city, they might be able to give them a surprise.

The spearmen were arranged by Xu Lai behind the city gate.

Although the city gate may not be of much use to the black dragon, Moriel is on the front line, and there are a lot of cavemen.

Maybe Moriel would consider destroying the city gate first and letting the cavemen rush into the city first.

Xu Lai did not consider the priests, priests and mages at all and let them stay in Qingfeng City.

Once these units cannot cast spells, their limitations will be very large.

The high priest and archmage can be arranged to supplement the long-range power.

These two have the ability to fight in close combat without reducing damage, so there is no need to worry too much even if they are approached by a black dragon.

As for other troops, some of the higher ranks will stay under the footpath of the city wall as a reserve team, ready to go to the city wall and the city gate to provide support.

Those with lower ranks are either responsible for operating ballistas on the city wall like farmers, or they are responsible for carrying ammunition and protecting craftsmen repairing the city wall.

After assigning tasks to everyone, Xu Lai rubbed his head and asked Su Ya beside him:
"Is there anything else I'm missing?"

This was the most stressful battle in Xu Lai's history.

During the most dangerous times before, there were people who carried it with him, but this time he needed to face it by himself.

"No, your current arrangement is the most reasonable."

Xu Lai's family knew about his family affairs, but Su Ya hadn't fought with him for a long time, so there was no way she could figure it out.

Fortunately, the actual commander of this battle was not Xu Lai. He just made some preparations on behalf of Reina before she returned. The roads in the underground city are not easy to navigate. Xu Lai also walked for several days and nights. Even if Moriel and the others flew from the sky, it would take at least a few hours.

After Xu Lai arranged the task, he took out his spell book and started casting spells.

Going back and waiting for Reina to equip the Forbidden Magic Ball, Xu Laikong left a lot of mana, but it was of no use.

The Doomsday Blade cannot be used, and Xu Lai is equipped with the Angel Alliance suit.

With the blessing of the Angel Alliance, Xu Lai's mental value reached as high as 47 points.

If you summon the fire element, you can summon 47*2 fire elements at a time, which lasts for 24 hours.

But in fact, Xu Lai was specially equipped with a fire spirit ball, and he also had advanced fire spells.

Advanced fire spells allow him to summon 47*3 fire elements (or 47*5 fire elements) at one time, but the mana consumption will increase due to the increase in fire elements.

Fortunately, the primary and intermediate levels each subtract 5 mana points, so summoning the fire element only requires 40 mana points.

Fire elements can fly, while fire elements can only fight in close combat. Not only are there a huge difference between the two, but they are very different when used against flying units.

Xu Lai must choose to summon 47*3 fire elements with 40 mana points at a time. He needs to wait for at least 5 minutes.

他连续召唤了12次，一共召唤出了47*3*1.5（火灵球）*12=2538只烈火元素。

More than 2500 level 5 combat units only consumed Xu Lai for an hour and 480 mana points, not even all his mana points.

And these level 5 fire elements, with the blessing of Xu Lai, Reina and others, will also have terrifying attributes. Level 7 units led by ordinary people may not be their opponents.

If it is a wild monster, except for some incompatible characteristics, even level 8 or 9 wild monsters are no match.

But unfortunately, the best way of fighting for the fire element and the fire element is to use fire spells.

The magic ball cannot ban the black dragon's anti-magic skin, but the destruction ball can, but the destruction ball will disable the characteristics of all creatures on the battlefield, which is not cost-effective.

Therefore, these fire element spell attacks are still ineffective against the black dragon.

As elemental creatures, they do not wear equipment. If spell attacks are ineffective, their unarmed attacks are completely weaker than normal level 5 units.

Fortunately, Xu Lai still has the Ultimate Prayer of the Angel Alliance available. Coupled with the full morale at this time, he can at least have 40% more attack and defense than Moriel's troops.

In addition, the Angel Alliance comes with 26 points of offensive and defensive attributes. Although Moriel definitely has similar treasures, they should not have more super artifacts than the Angel Alliance.

But according to Reina, after Moriel transforms into a dragon, her original talents will also be transformed into dragon-related ones, and the corresponding offense and defense will definitely be improved.

Coupled with the dragon's blood bottle's health bonus to the dragon, the dragon, which is already known for its health, will become even more difficult to deal with.

Of course, Xu Lai also has other advantages. For example, he can form an army with Reina, allowing most of the army to enjoy more bonuses.

Xu Lai's talent can greatly compensate for the fire elements in terms of speed and attack speed, so that these fire elements have the capital to fight these black dragons.

He summoned these fire elements and didn't expect them to cause much damage to the Black Dragon Legion.

I just hope that they can block the black dragon's attack and buy the shooter more time to output, lest Xu Lai use the griffins and angels in advance.

Griffins are very capable in aerial combat, but their attack capabilities on the ground are stronger, a bit like a combination of a fighter and a bomber.

If it is only used against the air, there are actually more flying creatures with air superiority.

This hour, Reina, Giselle and the others finally returned to the city.

As expected, Xu Lai handed over the command to Reina and asked her to put the Sea King flag at the highest point. The knightly style flag he remade was carried by Su Ya herself.

After redeployment, it was a difficult wait.

Before the black dragon could wait, those cavemen who were not afraid of fighting were the first to appear at the gate of Mingyue City.

In the past few days, Reina, Giselle and the others had slaughtered at least 70,000 to 80,000 cavemen.

But I didn't expect that the morale of these guys would not drop much. God knows how many such cavemen there are in Moriel's army.

As soon as the cavemen appeared, a large number of crossbow bolts were fired from the city walls.

Reina, the crossbowman, was not able to recruit many, and they were basically mainly heavy crossbowmen recruited.

After importing these two months and the crossbowmen purchased from the market, the number of crossbowmen has increased to 1000+.

In addition, a group of snipers had also advanced in the previous war. When this wave of crossbows hit, the cavemen who emerged instantly fell down in pieces like harvested weeds.

Not many cavemen appeared yet, so Rena divided the crossbowmen into three batches to attack.

The crossbowmen's attack speed was not fast and it took time to wind up. Three waves were just enough to form an almost continuous wave of attacks.

Mingyue City is just blocked at the intersection. Although the passage is spacious, it can only accommodate a few hundred cavemen entering and exiting at the same time.

This is due to the small size of the cavemen. If a fatter human being were born, they would probably not even be a hundred.

The caveman is just an appetizer and cannot create any waves.

But they are still the enemy, and they have officially fought against the legion composed of Xu Lai and Reina, even if they are only in a position to be beaten.

As expected, the holy light of prayer enveloped everyone.

And Rena's Dragon Heart also successfully summoned 7 black dragons.

The black dragons roared and rushed over, all spraying out the dragon fire that had been accumulated for a long time.

Seven dozens of meters long dragon flames completely blocked the entrance and exit, and all the cavemen stuck to the dragon flames were reduced to ashes in a very short period of time.

In fact, many of these dragon flames were burned in open spaces.

After all, the black dragons did not rush in front of the cavemen to spray, so this spray only killed one or two hundred cavemen after all.

Who knew that the crossbowmen just killed hundreds of cavemen without any effect.

As soon as these bursts of dragon flames erupted, the cavemen all swarmed towards the back as if their buttocks were on fire.

Seeing this scene, Xu Lai and others had not yet reacted. The little blue dragon, who was awakened by Su Ya and forcibly brought to the dungeon, became excited and eager to move in the direction of the black dragons.

"Roar……"

At this moment, on the other side of the passage, where no one could see it, a roar that made people unable to help but feel frightened came! (End of chapter)