It is also fortunate that there are no ranged troops, otherwise the chain mail on the bodies of these second-order senior infantry would not be able to block the sharp bone arrows.

The chain mail is fastened with an iron ring, which can block the slash, and the arrow will pass directly through the middle of the iron ring.

Although there is a layer of leather armor under the chain mail, the inner leather armor is not the outer leather armor, and it cannot carry a few arrows, but if the arrow is stronger, it can be easily shot through.

Back in the Divine Domain, Li Qing immediately asked the minfu who was digging the ground to boil water for cooking, helped his subordinates remove the heavy armor for repair, and fed the war horses.

Li Qing took a sip of water and rested for a while, then opened the attribute panel under his subordinates.

In a big battle, although all the skeletons are below the first rank, there are too many of them, and the accumulated experience is still considerable.

However, after the average score, none of the troops has accumulated enough combat experience to be promoted, but Long Shou has killed Wushuang all the way I don't know how much, and the level has risen several levels in a row, and now the level is as high as 18 levels and 94% experience, and it will soon be able to upgrade to 19 levels.

If there is another big battle like this, if his level can be raised to level 20 and promoted to a second-order hero, his strength will be greatly improved.

Upgrading the rank itself will greatly improve his physical fitness, the dragon bloodline will increase with the increase of the rank, and it will be developed once every time the rank is raised, plus the hero's skills, as well as the enhancement of the hero's specialty, the higher the hero's star, the stronger the strength will be with each upgrade.

But unfortunately, the next wave of difficulty is estimated to be explosive.

Li Qingdu may not dare to continue the next round, but he has not seen his unwillingness yet.

Wait for the third round to start, take a look at the difficulty, if it's too outrageous, he will give up decisively.

After a few battles, Li Qing's own combat level has not been improved, after all, he has not done anything, but he has commanded several battles, and his strategic experience has been greatly improved, but he has not yet reached the point of upgrading to the second-order strategic level.

While his subordinates were resting and repairing equipment, Li Qing returned to the labyrinth from the Divine Domain.

Looking at the broken bones all over the ground, Li Qing scratched his head, opened the space in his palm, and sucked a large piece of broken bones nearby into the space.

And then.....

"It's useless!"

The bones are decomposed, the breath of death contained in them is stripped away, and then synthesized, only a large bone with extremely high density can be synthesized, what is the use of this?

"I don't go the necromancer's route, what's the ...... Wait a minute! ”

Li Qing suddenly pinched his chin and pondered a little.

Although he doesn't follow the necromancer route, it is possible that others will, and this bone is useless to him, but it is quite useful for some necromancers.

If all these crunchy bones were broken down and then reassembled into tight, strong and heavy bones, and then used these bones to make a sturdy skeleton, what rank would the skeletons that were reawakened by necromancy be?

Thinking of this, Li Qing immediately became interested and began to use the space in his palm to absorb the broken bones scattered around him.

Fortunately, the space in the palm has a strong attraction, and the broken bones are not heavy, so they can be sucked up.

Most of the broken bones are concentrated near the high platform, and only half of the broken bones in the vicinity need to be collected.

But while he was busy, the voice of the mentor suddenly came to his ears:

"This spatial relic of yours is quite magical, can it hold living creatures?"

Li Qing paused, and immediately raised his head and replied respectfully:

"Can't hold living creatures."

"Well, that's a pity."

"You haven't seen this hero before, did your parents prepare it for you?"

Li Qing nodded and said:

"Yes, my parents prepared it for me."

"Very powerful, even if there is only one four-star hero under the name of the mentor, you have to cultivate it well and don't live up to your parents' expectations."

Li Qing nodded seriously:

"I will."

Nie Yang nodded, and asked again:

"Do you have any ideas for the next level?"

Li Qing told the truth:

"I guess it's going to be difficult, I want to see it now, if I can, of course I want to try, but if it's too difficult, I have to give up."

"Level 5 ....."

Nie Yang said in a deep voice:

"Later, the fifth level is also a skeleton army, and the skeleton ranks that appear are all below the first order like the previous level, but there are four thousand, and there will be about twenty percent of skeleton archers, and there will be an undead knight hero leader, do you have confidence?"

"Shhh

Li Qing couldn't help but gasp.

"It's too hard, isn't it?"

Not to mention the number, the key is that two percent is eight hundred skeleton archers, how to fight?

The bone bow used by the skeleton archer is also a bone arrow, and the bone arrow texture is very brittle, and it will break directly when it hits a hard object, but the skeleton archer is also long-range, and the bone arrow is also an arrow no matter how brittle it is, and it doesn't need any accuracy, and a round of 800 bone arrows will directly drown them.

You can't shoot at all, the number is too small, even if all the archers are promoted to the fourth order marksman, they can't shoot either.

He looked up and looked around, there were three high platforms in this small canyon basin, but none of them were very high, and there was no place to hide from the rain of arrows, and it was impossible to stop the siege and consumption of the four thousand skeleton army.

Shaking his head in his heart, he said:

"Mentor, this is too difficult, I'm afraid I can't stop it."

Nie Yang said with a smile:

"It's really difficult, but with the capital you have now, it's not impossible to build a suitable defensive stronghold, your hero is very strong, you might be able to try it."

"The capital I have now ???"

Then the guru's voice rang in his ears again:

"If you can complete the fifth level, you can get a Divine Domain Building Core from me, this is a very rare and good opportunity, only the first big class is available, and the next chance will be in half a year."

"In other words, you only have two chances to directly obtain the reward of the Divine Domain Building this year, and I hope you can seize this opportunity, even if it costs a lot."

"Soldiers can be retrained, but this opportunity is very rare."

"But...."

"It's not like I want to try, it's too difficult."

"You can use whatever means you can."

"All the means at your disposal?"

Li Qing thought about it carefully, and there was a faint hint of inspiration in his heart, but he couldn't find it for a while.

Suddenly, he thought of something in a flash of inspiration and immediately asked:

"Mentor, can I use the items stored in this space's relics in my test?"

But after waiting for a while, there was no response.

Li Qing rubbed his head and grinned, knowing what he should do.

Returning to the gate of the Divine Domain, Li Qing came to the easternmost part of the Divine Domain, swept his gaze over the hard-built city wall, shook his head, opened the space in his palm and put it away one by one.

It took so much effort to build a city wall, but it turned out that it was wrong to build it this way, and it was speechless.

But there is no way, no one taught it before, where do you know that there will be those hidden dangers.

But then again, there is no big problem with this in the early stage, just like the teacher said, those enemies who don't follow the usual path are unlikely to be encountered in the early stage, and there is no big problem in the early stage.

At least in the first two years under the name of the mentor, it is impossible to encounter such an enemy who does not follow the usual path, and after two years, there are already more resources, which can be slowly changed, or adjusted on the existing basis.

All in all, it's not a waste of effort.

In addition to putting away the city walls, Li Qing took out pieces of stone squares and converted them into thorny stone balls for storage.

Then he took some wood and began to process it into various special defensive weapons.

After doing this, he reappeared in the challenge space.

Instead of continuing to collect the broken bones, he walked along the canyon to the deeper part of the challenge canyon.

Now that the position is not suitable, he is ready to find a suitable place to set up a defensive line.

Anyway, there is still more than an hour to go, so you can look for it slowly.

Descend the canyon and turn left and right.

At the same time, other apprentices have also completed the challenge.

Most of them failed, and only the top few successfully completed the fourth level challenge, but only two were able to complete the challenge without loss, namely Li Qing and Zhang Jishan.

Although Cao Wenyuan and Gongsun Jin, Mo Wenxi and Chu Zaizhong completed the fourth level, they each had losses.

Like Cao Wenyuan, he only lost one soldier, but it was also damaged.

The biggest loss was Gongsun Jin, who finally paid the price of thirteen infantry killed in battle to complete the challenge.

After completing the challenge, opening the Divine Domain and allowing the troops to go back to rest, Gongsun Jin raised his head and shouted:

"Mentor, I don't know how much Li Qing's challenge is completed?"

The light curtain only shows which apprentices have completed it, and does not show the loss.

After a while, Nie Yang's voice sounded in his ears:

"I know what you're asking, he's completed the fourth level of the challenge without losing anything, and you've lost the bet between you."

"In addition, he is already preparing to start the fifth challenge, I can allow you to go back to your own god domain to replenish troops, up to 50 population limit, but the fifth challenge is very difficult, you don't have any chance, the mentor recommends that you give up the fifth challenge."

"Damn, how could he be so strong."

Gongsun Jin bit his lower lip, feeling a little unwilling.

"I don't know if the mentor can tell me the specific difficulty of the fifth level challenge, so that I can completely give up."

Nie Yang pondered for a moment, although Gongsun Jin's spiritual talent was not as good as Li Qing's, it was also a four-star, and it was considered the best under his name in previous years, and it had the value of cultivation.

"The fifth level challenge is four thousand skeleton undead below the first order, there are eight hundred skeleton archers, and a third-order undead knight hero."

Gongsun Jin......

Standing in place for a long time, his face changed back and forth, but finally he sighed weakly.

By completing the fourth level of the challenge, he already knows how terrifying the Sea of Skulls is.

The two thousand or so skeletons in the previous level were so difficult to fight, and the next four thousand skeleton archers, including eight hundred, and an undead hero led it, which was completely beyond the limit of his ability to deal with it.

Mentor Nie Yang watched back and forth in the challenge space, answering the apprentices' questions from time to time and instructing them on how to use them to their advantage.

He doesn't mind the apprentices opening some small hangings during the assessment, as long as the apprentices have their own, they can use it.

His mission is to train apprentices and grow them.

Props such as relics belong to the capital owned by the apprentice himself, and it is only natural to use this capital to obtain more benefits.

If he could, he'd rather everyone be able to complete the fifth level challenge and get a lot of rewards.

After all, all the efforts will be reimbursed by the War College in the future.

If these apprentices can become successful in the future, all the efforts can be rewarded several times over.

If the apprentice can't succeed, there is no reward for the effort.

But this kind of thing itself is an uncertain thing, and no one can guarantee that their apprentice will be successful, so they can only do their best.

Under his guidance, the two apprentices of Gongsun Jin and Chu Zaizhong felt that their strength was not good and withdrew from the challenge of the fifth level.

The remaining Zhang Jishan, Cao Wenyuan and Mo Wenxi all continued to challenge in the fifth level, and at this time they were all making final preparations for the fifth round of challenges.

At this time, Li Qing had already turned left and right in the canyon of the challenge space, about two kilometers away, and after negating two places that felt good, he found another corner of the canyon.

In fact, there are corners everywhere in the canyon, but this one found this time is different from the others.

First of all, the width of this corner is quite wide, about fifteen or sixteen meters, just enough to put two sections of the city wall down, and there is not much space around the arrow tower.

In addition, both sides of the corner canyon are steep, and it is impossible for the skeletons to condescendingly attack the archers on the walls from the left and right to the top of the canyon.

The two sections of the wall are placed at the corner, so that the skeleton army facing the wall is only a pile at the corner, and the skeleton army behind it cannot attack the defender on the other side of the 90-degree corner, which can minimize the strength advantage of the skeleton army.

Li Qing simulated the battle form after establishing a defense here in his heart, and his eyes suddenly lit up.

"Absolutely!"

Make a decision right now, build a line of defense right here.

First, he walked around the corner, then opened the space in his palm, and the whirlpool quickly expanded to more than five meters, and a five-meter-long wall smashed down, just touching the far left of the canyon.

Immediately after that, the second section of the wall was lowered and aligned with the first section of the wall.

Although the ground is not very flat, and the two sections of the city wall are crooked and cannot be completely aligned, it is not a big problem, it is just a temporary city wall, and it must be put away after this battle.

Then put the last arrow tower on the far right, and the gap is basically filled.

Then open the gate of the God's Domain, transfer the troops that have been rested, put the archers on the arrow tower, and the infantry put the city wall.

But that's not enough.

Li Qing thought for a while, and then found two suitable flat lands about 60 meters and 100 meters behind this section of the city wall, and then put down the second and third sections of the city wall.

In this way, if the previous section of the wall is breached, you can immediately withdraw to the second section of the wall to continue the defense.

The city wall is not afraid of being broken, such a hard stone is not something that a skeleton that is less than a rank can be broken, what he is afraid of is mainly the tactics of the undead hero.

Although there were many skeletons in the last round, there was no hero command, and the skeletons were all rushed up without any tactics to speak of.

Now there is an undead hero in command in this round, and he is bound to use various tactics.

The Sea of Skulls has a unique siege tactic that is very terrifying, that is, a large number of skeleton bones are piled up under the city wall to form a mountain until the bones are piled up until they are level with the city wall.

At that time, the army of the undead can rush directly to the city with their bones on their feet.

Therefore, it is still necessary to make two more rounds of city wall buffers, just in case.

After doing this, Li Qing took a deep breath and shouted to the sky:

"Mentor, I'm ready to start the fifth round of the challenge!"