Seeing the successful advancement of the blood pool, Lin Jun's mood can be described as overjoyed!

I saw that the precious medicinal materials that had just been devoured by the blood pool seemed to have been greatly nourished, and they had drawn out their buds, and under the glance of Lin Jun's spiritual power, Lin Jun found that the inside of the blood essence stone near the blood pool had become more precipitated and more ruddy!

The Blood Essence Stone is a very precious ore! Its effect can heal a person's wounds at a very fast speed! And it has a very better auxiliary effect on those who practice the laws of nature or killing! It is rumored that the Blood Essence Stone can transform into the 'Sacred Blood Essence Stone' after precipitation! The effect of the 'Sacred Blood Essence Stone' is that as long as your injury is not directly fatal, as long as the 'Divine Blood Essence Stone' is placed on top of the wound, it can be healed!

Of course, the rumors are true, but no one knows what the truth is! After all, the requirements for the veins to be able to produce this kind of ore can be said to be very high, and even picky! It is completely impossible to produce this kind of thing without the right time and place.

The conditions of the blood pool can be said to be very good, at least Lin Jun made the blood essence stone near the blood pool, and it has expanded a lot of branch mines! The various conditions in the underworld can be said to be unique! Anyway, Lin Jun has found a place for all the things that can be used in his hands, and he will plant them all if he can plant them, and those renewable resources Lin Jun will not let them become moldy in his hands!

In this way, you won't have to worry about running out of materials that you can use in the future!

As the blood pool level increases, the blood pool itself begins to condense its own energy. I saw the thick blood in the blood pool splash onto the shore, and then the blood began to transform, and after a while, dead corpses condensed near the blood pool! This means that the blood pool can begin to produce dead corpses on its own! I believe that it will not be long before I will be able to have a small team of dead corpses as a meat shield, which is a great and sacred profession!

Although Lin Jun was very happy about the advancement of the blood pool, a new problem was placed in front of Lin Jun!

At the beginning, because of the collection of spirit gathering arrays, concealment runes, and magic absorption runes in the stone graveyard. The concealment rune was left in the storage space by Lin Jun in case of emergency. Then Lin Jun placed the Spirit Gathering Circle in a valley, because the effect of the Spirit Gathering Circle made the wandering spirits in the air continue to replenish it!

Then Lin Jun, who got enough materials, carved a super-large bone gathering circle in this valley! Then blessed the magic absorption rune on the bone gathering circle! The effect of the bone gathering circle is that it can convert the nearby necromantic qi into skeleton bones, compared to ordinary human bones, the skeleton bones transformed by necromantic qi are stronger, and the speed of absorbing necromantic qi is faster!

It can be said that it is because of the interaction of the two magic circles that the low-level military production chain in the underworld can be formed! This valley has become a veritable skull valley. And now that he has an advanced blood pool, Lin Jun can feel that the energy in the blood pool seems to be constantly improving himself because of the nearby pillars similar to Huabiao! And with the blood of the demonic beasts, in addition to sometimes 'hunting' and other behaviors, there is no need to worry about whether the blood in the blood pool is enough!

But now the problem comes, with the Skull Valley and the Blood Pool, how to build the follow-up buildings has become Lin Jun's biggest trouble now, when he got the Book of Hell, all the buildings were built, and now how to continue to expand is stumped himself!

Is it only possible to keep all the low-level classes going up to the high-level troops?!

This is really a very difficult thing! First of all, not all low-level troops can improve their rank! Although the Book of Darkness can greatly reduce the time it takes for the undead to advance, the time it takes for a low-level class to advance to a high-level class is also extremely terrifying! If they are really allowed to improve one order at a time, I don't know that it will not be until the Year of the Monkey to be able to produce a high-level class!

Don't look at the members of the 'Net', it seems that it is very easy to ascend to the next level! That's because they have enough spiritual intelligence, and they have also practiced before, and there is also a saying that they are familiar with this kind of thing! Although the way of cultivation is different, people with a foundation are always much faster than those without a foundation. Many of these forks can be quickly distinguished, and the advantages of this are self-evident!

Therefore, although the idea of letting all the low-level troops be promoted to the high-level troops step by step is a little bit possible, if you understand it, you will naturally be able to understand that it is tantamount to daydreaming!

Isn't it just about building something, you ask, if you have enough materials? This is the most correct way under normal circumstances, but not in the underworld! Even if you build the same thing, it won't work without the approval of the Underworld!

The reason is that only a building that emits a grayish-white light from the Book of Darkness can become a model! Of course, as long as you successfully build a model, when you build the same building in the future, you will naturally be recognized by the Book of Darkness!

But now how to build the building behind it can be sad for Lin Jun, during this time Lin Jun has thought of many ways but there is no way to achieve it, although the blood pool upgrade is a good news, but in the future, you can't rely on the blood pool to eat, right? Only by building more powerful buildings and producing more powerful undead can he be able to gain a firm foothold on this continent! After all, if he wants to fight against those powerful forces in the future, if he doesn't have a strong enough force, it is definitely just a fool's dream......

Therefore, although he was happy for the advancement of the blood pool, Lin Jun was deeply worried about the future path.

Just as Lin Jun was thinking about what to do, a strong energy fluctuation occurred in the blood pool!

"Could it be that the blood pool can still give me a double advancement?!" Lin Jun's eyes widened as he looked at the drastic changes that took place in the center of the blood pool, and he couldn't help but have this idea in his mind, but soon Lin Jun shook his head and decisively gave up this whimsical idea, if the flesh and blood of a half-orc chief could make the blood pool advance twice, then he would have already thought of how to build a follow-up building!

Although he thought so, Lin Jun still had great expectations for the blood pool, after all, he just thought that the blood pool could not be advanced, so he advanced, maybe the blood pool could bring him a bigger surprise?

What kind of surprise can the blood pool bring to Lin Jun?! Everyone is welcome to answer enthusiastically! If you can send a collection of small remnants by the way, I am even more grateful!