For example, the simplest god's domain building - warehouse.

On the surface, it is a warehouse with an area of only one hundred square meters, but in fact the interior is an independent space, and according to the level of the Divine Domain building, it may be 10,000 square meters, it may be 30,000 square meters, or it may be 100,000 square meters.

Add to this the fact that a warehouse with an appearance of only 100 square meters can have millions of cubic meters of storage inside.

This kind of magical god's domain building is extremely rare, and most of the sources are self-built.

This requires a very powerful mage who has mastered very advanced runes, similar to the way a mage tower is built, using a large number of precious magical materials to build a shell, and then sealing a separate space fragment or half-plane into the building, giving the building special abilities.

After the building is built, it is also necessary to incorporate some essentia to change the characteristics of the building and transform it into a special god domain building.

Strictly speaking, this thing is similar to opening up a class system from scratch, but it is much less difficult than creating a class promotion system.

And the existence of building this special god domain building, or creating a magical class promotion system, has a very awesome name, called Demon Pattern Constructor, which is a legendary and extraordinary profession that requires the mastery of a huge amount of knowledge in more than forty or fifty disciplines.

Magic means magic.

The pattern refers to the rune system, and the combination of the two is the magic pattern array.

Construct refers to the use of magic pattern construct.

Strictly speaking, the Demon Pattern Builder is just a general term, but in fact, the role of this class is not only to build God's Domain buildings and open up a class promotion system, but also includes something that all War Lords and powerful heroes and professionals dream of - Demon Pattern Construction.

It's a very magical thing, and the Magical Pattern Builder can condense the ultra-complex magic array into a palm-sized space, and then load it on the powerful profession, so as to exert a super powerful additional bonus effect.

A standard base power Magic Pattern construct that increases the user's strength by more than 30%.

A standard basic Agility Pattern build that increases the user's reaction speed and running speed by more than 30%.

And this is just the basic structure, the carrying capacity requirements for the user are very low, any professional knight above the fifth or sixth order can easily carry five or six, and some talented people can carry more than a dozen.

Imagine that a knight loads ten basic power magic pattern builds in one go, and his strength increases by more than 300%, what is this concept?

So.....

Well, this one is too far away, this profession is a real super genius profession, normal people don't have to think about it at all.

He didn't need to think about this, if he wanted to meet the minimum requirements, ordinary mages would need to study for more than ten years, but now he doesn't need to think about it at all.

What he has to think about now is to get a good score in the mentor's upcoming assessment.

Quickly ordered the troops to be in place, Li Qing stood on the city wall and took out two kobold cards to activate, and a large amount of white light fell and turned into groups of ugly kobolds.

Without his orders, the archers began to draw their bows the moment the kobold appeared.

This time, less than half of the archers did it, and the other half of the senior archers who had been promoted to the second-order empire before did not do it.

Li Qing had a little obsessive-compulsive disorder, and he felt uncomfortable seeing the different levels of his subordinates, so he was ready to promote all the archers to the second-order class first.

So many kobolds share with twelve archers, and the combat experience increases very quickly.

Before the first round of killings was over, they had already reached the promotion criteria.

Fifteen minutes later, Li Qing took out two kobold cards again to activate.

This time there is no need to divide the troops, and all archers who have been promoted to the second rank can shoot at will, and they don't even need to gather the kobold thrower first.

After fighting for so long, the archers on the city walls have already been able to skillfully dodge the ballistics below.

The strength of the second-order archers has been qualitatively improved compared to the zero-order, especially the five elite-level archers, both in strength and reaction are twice as large as the ordinary template, and one arrow can directly nail the first-order kobold digger to the ground.

One is a level 25 elite empire senior archer, and the other is a level 10 ordinary kobold digger.

The difference in strength is very large, as long as the main parts of the body are hit, it is basically a second kill.

Waiting for a wave of archers on the city wall to kill, the kobold had already pushed open the outer gate without a bolt and rushed into the passage of the city gate, and after the baptism of the hidden soldier holes above the left and right of the city gate hole, he finally engaged the infantry guarding the inner city gate head-on.

Fifteen elite quality second-order imperial senior infantry with chain mail all over their bodies stood at the front with iron shields, surrounding the entire city gate.

They carried them in front, and the other infantrymen raised their swords in the back and poked into the shield wall.

There was the muffled sound of wooden clubs pounding shields, the sound of sharp blades tearing flesh apart, and the occasional scream.

There is no surprise, half of the second-order infantry plus the rest are all first-order infantry, and the simple rank is not inferior to the kobolds, and the kobolds are at the bottom of the same rank, plus with the support of archers, where can they fight.

By the end of the battle, all infantry had been promoted to the second rank.

As for Li Qing, he has used up 14 kobold cards, and there are still 6 left.

At this point, Li Qing paused.

Because even if all the remaining 6 are used, if the combat experience is evenly divided, no soldier can be promoted to the third rank.

But if only a small part is cultivated, it can allow a few soldiers to be promoted to the third rank.

The combat effectiveness of the third-order class is much stronger than that of the second-order, mainly because a piece of equipment will change from chain mail to scale armor.

In fact, the material of chain mail and scale armor is almost the same, but the chain mail is made of iron locks, which has a first-class anti-sword slashing effect, but does not prevent the stabbing of arrows and spears.

The scale armor is not only anti-chopping, but also can block arrows, relatively speaking, it is more comprehensive than chain mail.

Therefore, Li Qing's gaze swept over the infantry, pondered for a while, and ordered five elite veteran imperial infantry to stand at the gate of the inner city.

The rest of the infantry also followed in groups of five, ready to meet at any time.

And then....

He came to the gate, and after a little thought, he made two thick stakes at the gate and drove them into the ground, and then made a thick plank larger than the gate, and dug four holes in it.

Then take out some coarse iron and decompose it in the palm space, remove impurities into fine iron, and then shape it into small iron rings to connect them to form a long iron cable.

Four long iron cables were made in one go, one end was hung in four holes above the thick wooden gate, and the other end was raised above the city gate tower, and eight soldiers were sent here to slowly pull up the thick solid wood gate.

Get ready, Li Qing took out a kobold card to activate.

This time the archers were not allowed to shoot, and they did not dare to summon too many at once.

The kobolds flocked to the city gates, and five elite imperial veterans stood by with shields.

A few seconds later, seven or eight kobolds in the front row of the city gate cave slammed into the sword under the squeezing of their companions behind, and there was a burst of tearing and killing sounds in the city gate cave.

At the same time, Li Qing, who was standing on the tower of the city gate, immediately shouted to the soldiers on the city wall:

"Lower the floodgates!"

The four iron cables were quickly released, and the thick wooden planks with a length and width of four meters quickly slid down the space between the city wall and the wooden stakes, and the kobolds, who were desperately squeezing forward in front of the city gate, panicked.

"Boom!"

With the roar of a large number of bones breaking, the gates were sealed, splitting the kobold crowd in two.

Only about one-fifth of the kobolds entered the gates, and the rest were sealed outside the walls.

Twenty-one kobolds were blocked from the back, and after a moment of panic, they had to face the opponent in front of them.

But without backup, their morale plummeted.

The kobold who is only level 3 in the front row is a knife by one, and the slightly stronger kobold digger is the same result.

And most of their attacks were blocked by shields, and the occasional unblocked smashed on the chain mail, in addition to bringing some impact to the infantry, it was not possible to get the elite template of the second-order senior Imperial infantry.

It's not a game, but there's no such thing as forced damage, and if you don't break the defense, you can't break the defense, and you can't do any damage.

The kobolds' weapons are all blunt weapons, and they can't pierce the lock ring without a sharp spear, except for the second-order kobold leader who smashes on his body and can shock bones and internal organs.

But they have too few chances to hit.

In less than two minutes, the kobold in the cave of the city gate was killed, and the five senior infantry did not even take a breath.

After a two-minute rest, Li Qing ordered the soldiers on the city wall to pull the four iron cables to re-raise the gate, and the kobolds who were crowding at the gate and knocking on the gate rushed in again.

Then the halfway gate falls down and keeps the rest out.

Just like the remake just now, the kobold who came in didn't last a few minutes and was killed.

Repeatedly, and constantly concocted.

Li Qing was engrossed, and once he found out which soldier was about to hold on, he immediately ordered the reserve infantry to go up.

There is no rush to upgrade, and this group of elite subordinates can't die.

It took five full years back and forth to kill all the kobolds.

The five veteran infantrymen were covered in blood, and all were wounded at various levels, but they were fine.

Still not promoted, but it's not a big problem, and there are still five kobold cards on hand, which is definitely enough.

After resting for half an hour, eating something and drinking some water to recover his strength, he continued.

The process continues as before.

Time passed, and the five elite senior infantry guarded the gate of the city and kept killing, going back and forth for I don't know how many rounds, and finally after a certain round, they accumulated enough combat experience to be promoted to the third-order imperial elite infantry.

"It's so hard!"

This is still the safest and most advantageous terrain he provides, and the whole process is protected.

He was sure that the other War Lord apprentices had more materials and money in their hands than him, and they also had more class promotion cards in their hands, but they would definitely not be able to provide such an advantageous combat environment at this time period.

After being promoted, the elite infantry of the third-order empire is equipped with full-body scale armor, including helmets, shoulder pads, guards, leg armor, combat boots, a fine iron large round shield, and a sharp one-handed sword.

When this batch of promotions was completed, Li Qing still had 3 kobold cards in his hand at this time.

After a moment's consideration, he decided that his next opportunity would be given to those five elite template second-order Empire senior archers.

The Elite Template has been upgraded to the third level, and it is limited by the fact that the bow is a little worse, and the range and accuracy will be worse than that of the Sharpbower, but the lethality will not be much worse.

The archers don't need to be so troublesome, as soon as the door is blocked, five senior archers of the elite template stand on the edge of the city wall, two infantry each guarding the left and right, and then Li Qing activates all the remaining three kobold cards in one breath, filling the small space outside the city wall.

Five elite senior archers stood on the city wall and lowered their arrows, almost no need to aim, just let the arrows hit.

A complete slaughter.

It took the five archers almost an hour, three breaks in between, and several rounds of arrows borrowed from other archers to kill the kobolds.

The corpses under the city walls were all over the field, the blood was flowing like rivers, and the corpses of the kobolds were piled up in more than one layer.

The slaughter was over, and the five elite template Imperial Senior Archers had finally accumulated enough experience to be promoted to the rank of Tier 3 Imperial Elite Archers.

Then, more than 200 people cleaned up the battlefield, and hundreds of kobold corpses were piled up into a hill.

Li Qing used the space in his palm to collect all the corpses, preparing to decompose and refine the bloodline.

It is worth mentioning that as early as when he killed all the kobolds summoned by the eighteenth kobold card, Li Qing's personal combat level had been raised to the ninth level, and he had gained 45 skill points.

Then the XP gets stuck here, and you can't continue to level 10 to gain the first Hero Feat.

To reach level 10, he must increase his mana to 10 or more.

Judging from the fact that he can only meditate on 0.5 mana a day, it takes 20 days to accumulate 10 mana, which is less than a month.

"Uh...."

"It's still pretty fast!"

It only takes 18 days to be promoted, which is considered to be a speed that beats other apprentices.

It can only be said that the five-star + mental power talent is enough.

Put all the kobold corpses into the space of the golden finger, decompose and refine, of course, Li Qing's consciousness was put into it, only to see that there was only a small golden streamer and a ball of clear light inside.

The Clear Light Ball is the pure soul power refined by the souls of two thousand kobolds.

The tiny golden streamer is the dragon blood extracted from the bloodlines of two thousand kobolds, which looks quite thick, but in fact, most of them are just golden lights, and the actual bloodline is only as thin as a hair.

But no matter how many there are, this is indeed a trace of high-purity dragon blood, which can theoretically be used by professionals or heroes who have dragon blood, forcibly awakening dragon blood.

This is the power of his golden finger, which can perfectly extract the faint and almost imperceptible dragon blood from the kobold bloodline.

As for the average bloodline master or alchemist, they are not as efficient at extracting bloodline as he is.

They wanted to extract a trace of dragon blood that was so thin as he was now, and they didn't have to think about it without tens of thousands of kobolds.

Some kobolds whose strength is too weak as level 3 have a pitifully low blood vein, and it is impossible for them to extract even a trace from a level 3 kobold.

Their method of extraction is to prepare thousands of kobold corpses in one go, and to process and extract them on a large scale, it is impossible to extract them one by one like him.

So their waste is very large, probably less than one-tenth of his efficiency.

In other words, Li Qing only used the corpses of two thousand kobolds, which reached the order of magnitude that they needed tens of thousands of kobolds to extract.

What's more, even if it is so wasteful, not everyone can do this, and ordinary blood science experts are not capable of operating such a large-scale experiment.

So here's the problem.

The trace of dragon blood in front of him can barely come in handy, how to use it next?

Or to put it another way, is this treasure for personal use, or is it used to train his subordinates?

If you use it for yourself, it is possible to open up a new dragon bloodline for yourself, and you can change to a dragon warlock or dragon warrior and other professions in the future.

If you use it to train your subordinates, you can transform into a Dragon Pulse Warlock or Dragon Pulse Fighter.