The cost of advancing to the level 20 blood crystal space is about 800 billion.

This is a great burden for the blood essence collection and accumulation that Li Feng had before, so Li Feng has not been in the promotion of the level of the space, but has definitely leaned his focus towards the female worm.

However, now, due to the fact that the empty space bar of the individual's absorption specialty is really insufficient, and the total accumulation of blood essence is about to reach one and fifty trillion units.

These 800 billion blood essence units are naturally not much consumption.

didn't say anything, since he lacked a special vacancy bar, therefore, Li Feng didn't think about it, so he immediately issued a promotion order to the space.

"Hint, to upgrade to level 20 blood crystal space, it takes 819.2 billion blood essence units to consume, is it upgraded?"

"Yes."

In just an instant, Li Feng found that the total value of his blood essence had accumulated, and he had deducted more than 800 billion at once.

However, a series of changes have taken place in the blood crystal space at this time.

The diameter of the blood crystal space of level 20 has expanded from the original diameter of one hundred and ninety meters to two hundred meters at once.

Although in terms of the number jù scale, this is only a ten meter increase from the original diameter.

However, as long as you are slightly sensitive to the area, you will know that when the area is getting larger and larger, even if it is only ten meters in diameter, even if it only increases the diameter distance, the actual increase in the total area is definitely very considerable.

The blood crystal space with a diameter of one hundred and ninety meters, carefully calculated, was only thirty-six thousand square meters.

However, the blood crystal space with a diameter of 200 meters is directly 40,000 square meters, which is 4,000 square meters more, occupying one-ninth of the original area, so it can be seen that this is only an additional blood crystal space with a diameter of ten meters. It's actually a lot bigger.

4,000 square meters, if calculated in terms of housing area, 100 square meters per family, it is enough to accommodate 40 families.

In addition to the expansion of the area of the space, the other added benefit is the distance of the blood crystal space for blood essence collection. From 1,900 meters, it has risen to 2,000 meters.

The diameter of the conveyor elevator has also risen to 20 meters.

In addition, the most intuitive thing is that, for example, the success rate of the daily increase in the synthesis box function has also increased from 19% to 20%.

Li Feng's personal breeding of the same kind of demons and so on has also increased one after another.

However, all of the above. None of them are the focus of Li Feng's promotion to the space level this time.

The only important point is that Li Feng lacked a special vacancy bar that he had a headache before, and he can finally be eligible to buy one more again.

"Congratulations, the Blood Crystal Space has been successfully promoted to level 20, you have obtained the purchase of the seventh specialty vacant slot, and the blood essence units required for the promotion of the next level, the twenty-first level of space level are 32,760 billion, please continue to work hard and keep up the good work......"

When Li Feng received a series of congratulatory messages. One of the above pieces of information is known to him. The headache I had been having before was solved satisfactorily.

In the Demon Strength series, every five levels are a major level, and the level of space is also promoted by five, with a natural one, every five whole levels. The Blood Crystal Space will all have new abilities.

Yes.

The addition of a new purchase slot is just one of them.

The twentieth level of the blood crystal space did not disappoint Li Feng this time, and it was indeed an additional new elemental ability.

"Congratulations, your Blood Crystal Space has been successfully promoted to level 20, and you have obtained a deputy commander to grant authority ability."

When Li Feng received this information about the deputy commander's authority. I couldn't help but pay attention to it several times at once.

It turned out that this was a power of authority to appoint the second commander-in-chief.

To put it simply, with Li Feng having this authority, he can now finally set up a character to replace the commander role when it was inconvenient for him to manage the entire Blood Crystal Space.

This ability, in fact, in the twentieth level of the blood crystal space, in fact, Li Feng also has similar power.

For example, order a large area of the Blood Crystal Space to be open to people in and out. For example, if you are a subordinate of a certain person who is designated open, you can use the teleportation elevator in the blood crystal space.

However, the above details are shared with open instructions, and they can only be enjoyed, and they are not really able to fully control the entire blood crystal space, and the permissions are actually very limited.

But now that the authority of the deputy charge is granted, it is very different, this is the function of the entire blood crystal space, and it can be given to the deputy commander to control and manage.

For example, its authority does not simply mean that it is allowed to be open to such and such a cluster, but also allows the designated deputy commander to control the entire space development.

The level of the blood crystal space, the use of the synthesis function, and the command of all the demons and mother worms, etc.

Except for the ability to raise demons at will with Li Feng, the host, it is basically included.

I have to say that the appearance of this deputy command authority made Li Feng quite concerned.

In this way, it will solve the problem that he will not be on Earth in the future, and at least he will have a deputy who can use the power of the Blood Crystal Spatial Heritage.

But the question arises again, who should this deputy deputy commander be given to?

In Li Feng's mind, several characters flashed at once, the King of Soldiers, Mo Lishan, Ling Qian, and his daughter-in-law Liu Ruoshi.

But now that the king of soldiers has passed away, there are only these three people left, who Li Feng particularly relies on.

Her daughter-in-law Liu Ruoshi probably doesn't want to get too involved in this aspect of herself, and the rest of the candidates are Mo Lishan and Ling Qian.

"Hmm...... I'll talk about that later. ”

After thinking about it for a while, Li Feng still did not have too ideal results, according to the overall ability, this deputy commander candidate is none other than Mo Li Shan, because of comprehensiveness, Mo Li Mountain is more stable and more comprehensive.

However, Morry Mountain is also a resident and important figure in the Blood Moon World, and if this authority is handed over to Mori Mountain, it will be equivalent to not being able to play too much role as this deputy commander.

After all, now that Li Feng has almost focused on the Blood Moon World, no one has taken care of the situation on this side of the earth.

After thinking about it several times, before he could decide for the time being, Li Feng simply planned to let it go, and once again focused on the level of the blood crystal space.

"Do you want to go up to the twenty-first level?"

This question arises in Li Feng's heart, and if he is simply promoted by one level, there is no big change. If you can go up to the big level of twenty-five at once, it will be different.

Soon, he quickly calculated the total cost of upgrading the blood crystal space from level 20 to level 25, calculating it by increasing by five times per level, and the final answer turned out to be that it would be promoted to level 25 blood crystal space. A total of 260 billion is needed.

It's okay if you don't calculate it, but I was taken aback by a calculation, Nima, the twenty-first level is only more than three trillion yuan, for Li Feng, who is now one and a half trillion yuan, it is not a drizzle, but it is still very light and can afford it.

Twenty-two is only fifteen trillion, which is equally bearable.

But the problem soon came, when the cost of the twenty-third level was consumed. suddenly became seventy-five trillion, close to half of his current net worth.

And the twenty-four level is even more exaggerated, directly more than 300 trillion.

"Maha, this is so poor."

Li Feng suddenly found that after developing for so long, the speed of blood essence collection had increased a lot, but in the end, whether it was the demon or the mother's higher promotion. Or the blood crystal space has been upgraded to an upper level, but it is still difficult to advance an inch.

All of a sudden. He's so bitter.

The higher the level of development speed of this blood crystal space, how could it feel more difficult than imagined? And it's getting harder and harder, so hard that he has been busy for a year, but he can still only improve the blood crystal space by three levels?

"Could it be that you are going down the wrong path?"

At this moment, Li Feng did fall into a deep reflection on the speed at which blood essence was collected. With his current situation of insect farms all over the world, and if he is still developing at a very slow pace, then how can he collect more blood essence more quickly?

And this quick collection effect will definitely not be as simple as doubling or tripling the hair. It is inevitable that a big leap must be made, otherwise, with the current collection effect, even if the progress is increased several times, it is estimated that it will still be a big problem to collect the requirements of tens of billions of upgrades.

Gradually, as Li Feng reflected, he felt more and more that he had missed something, and a more effective way to collect blood essence should have been available, but he should not have found it.

Otherwise, for so long, why hasn't he ever appeared again since he obtained the Blood Crystal Space to give him an excellent blood essence collection evaluation speed and obtained two additional reward items from the beginning?

The reason is naturally that for a long time, I am afraid that there have been many opportunities for additional items rewarded by the total accumulation of blood essence, but they have been denied by the speed of blood essence collection that I can't keep up.

The blood crystal space is probably very unqualified for the speed and efficiency of collecting blood essence by itself.

Thinking of this, Li Feng was extremely depressed in his heart.

The more he thought about it, the more he felt that it was definitely because he hadn't discovered a faster way to collect blood essence, absolutely.

Shaking his head, he thought hard for a while but to no avail, and he could only put this big problem aside for the time being.

Unexpectedly, it was not possible to think about it all the time, so he had to return his attention to business again.

Entering the Demon Specialty Icon item, sure enough, the blood crystal space that rose to level 20 had been activated.

This is the seventh.

Li Feng didn't think about it, and directly spent a trillion blood essences to buy the seventh special feature vacancy slot that had been activated.

After doing this, Li Feng's three specialty columns were finally assembled.

"Absorb Speed Enhancement ......"

"Absorb Sensitivity and Enhance ......"

"Absorb the reaction to strengthen ......"

When ten minutes passed, Li Feng's sturdy upper body already had three new specialties.

At this moment, he only felt that his control over his body had reached its peak like never before, his mind was clear, and his reflexes and agility were simply amazing.

Speed enhancement, agility enhancement, reaction enhancement, combat power enhancement, when these four passive enhancements are all in one person's body, what kind of improvement is this?

The next moment, when Li Feng carefully tested his current situation, he was still shocked. (To be continued......)