The so-called "group" actually means very simple, it refers to a combination. And this step is to put "Lu Xin" on what he is doing now, which refers to the combination of the two flames, or to be more precise, that "Lu Xin" wants to "eat" the thousand zhang dust flame he created with that earth fire.

This approach is somewhat similar to the previous step of "melting", but this time it is a fire instead of a fire. If "Lu Xin" succeeds in this step, then his earth fire will strengthen its own flame because of the flame power of Qianzhang Dust, and because of the earth attribute of Qianzhang Dust, its own earth attribute will be greatly improved. In this way, the first major step of the Earth Fire Enhancement can be regarded as completely completed.

And after that, as long as "Lu Xin" can achieve such success in every material, then his earth fire will continue to be strengthened in terms of flame power, and it will continue to become complex and powerful in all aspects. When the time comes, there is a good chance that a new earth fire will be created. That new earth fire flame has been strengthened countless times, and it has extremely mixed and powerful attributes, which is exactly the same as the real earth fire, in that case, it also represents the completion of "Lu Xin's" earth fire.

The reason why the form of "group" was chosen in the last step to absorb the fire instead of directly using the fire itself to absorb the earth attributes of Qianzhang dust in the second step, firstly, because "Lu Xin" needed to strengthen the flame of the earth fire, so the addition of the heavenly flow fire was essential.

The second reason is that the risk of directly using earth fire to collect thousands of feet of dust is extremely high, and it is extremely difficult to control. After all, the current earth fire is still too weak to withstand too much stimulation and fluctuations. But as long as the Outer Heaven Flowing Fire is used as the medium in the middle, and then the earth fire is used to absorb it after it is incorporated into the Qianzhang Dust, then after all, the two flames are of the same origin, and it is much easier for a monk like "Lu Xin" who has mastered the true source power of the flame to fuse them.

Looking at the Qianzhang dust flame in front of him, feeling the various attributes and powers in the flames, after a while, Xu is enough to understand, "Lu Xin" nodded with satisfaction, and said to himself: "It seems that the flame power and earth attributes should be about the same, and it is probably not difficult to combine them." ”

Without hesitation, "Lu Xin" used his spiritual power to guide the Qianzhang Dust Flame in front of him towards the earth fire. This time, although "Lu Xin" felt that he was very sure, he still seemed extremely cautious. Because he knew that no matter how sure he was, he was speculating, after all, he had never tried such a thing, and he had not even read about it in any of the classics. And if he fails, the fire of the earth will be destroyed, and the fire of the earth he created this time will be completely finished.

The two earthy yellow flames of somewhat similar colors finally came from about a foot apart to half an inch apart, and at this time, a phenomenon that surprised "Lu Xin" appeared. The two flames seemed to have spirituality, and they were pulling each other, and there were even small fire snakes rushing out, approaching each other, as if they were actively pulling each other together.

Seeing this phenomenon, "Lu Xin's" heart has settled a lot, knowing that most of his thoughts are right, and he should be able to take this first big step. So, in the state of mind of being relieved and anxious to get the result, the speed of "Lu Xin" accelerated a lot, so that the two flames quickly approached, and soon touched each other solidly.

The sound of "bang" is not loud, and it is no different from a simple collision of flames. But at this moment, "Lu Xin"'s face changed dramatically in an instant, cold sweat shot out from his forehead, and his spiritual power was also surging wildly, rushing to the flames that had just been put together, desperately controlling and protecting.

The reason why "Lu Xin" suddenly became nervous was because he felt signs of instability and strong rejection at the moment when the two flames combined. As a monk who had fully comprehended the true source power of the flame, "Lu Xin" knew that he would never be wrong with such feelings.

Obviously, "Lu Xin" still underestimated his so-called "artificial flames". This kind of flame should not appear between heaven and earth, but is created, and it seems that it is not much different from the natural flame, but in fact, the three flames naturally bred by heaven and earth are all forged and tempered after countless years, and the creation and laws contained in them can be fully understood when "Lu Xin" says that he can understand them?

The strong rejection made "Lu Xin" break out in a cold sweat, and he rigidly controlled the stability of the new flames that were put together, so to speak, using everything he knew about the true source power of the flames to ensure that he would not fail.

The constantly beating flames were like a ball of light ready to explode at any time in front of "Lu Xin", and the energy contained in it was not large, but it was enough to completely destroy the earth fire itself. At this moment, wherever there is repulsion in that small flame, there is the spiritual power of "Lu Xin" blessed there, forming a just balanced confrontation with the repulsive force, so that the earth fire continues to adapt to the new power.

This kind of spiritual power manipulation method can be said to be extremely fine, which is also the ability of "Lu Xin" as an instrument immortal. If this step had been done by other monks, I am afraid that it would not have been completed at all, and the earth fire would have disintegrated long ago.

Eventually, the continuous efforts began to take effect, and "Lu Xin" could feel that the earth fire was gradually adapting to the newly added power, and the repulsive power that could not be seen inside was slowly decreasing.

Gasping softly, "Lu Xin" felt that his current state was no less than the fact that he had just experienced a big battle. It wasn't until about half an hour later, when the last trace of repulsive power in the flames had disappeared, that "Lu Xin" breathed a sigh of relief, and had the time to wipe the sweat that was about to enter his eyes.

"It's so dangerous, I almost failed. I'm still underestimating the difference between natural and artificial flames. If you had been a little careful just now, and not be so eager to let the two flames come into contact with each other, the whole process would definitely be much easier to control, and it would not have almost failed completely. Looking at the only flame swaying in front of him, Lu Xin showed a wry smile on his face and shook his head to himself.

Only "Lu Xin" himself knew how much change had occurred in the flames in front of him in the more than half an hour just now, and what kind of danger he had experienced. If it weren't for his profound cultivation, if it weren't for his ability to control the flames to be outstanding, he would have completely failed just now, and his earth fire would have collapsed.

"But it worked, and at least from this first step, it didn't seem entirely unreasonable. After carefully experiencing the attributes and power of the flames in front of him, Lu Xin muttered to himself again.

"Lu Xin" knows very well that the flame in front of him is no longer a real earth fire. Because there are more earth attributes in this flame than the earth fire, although this change is not a big change for the earth fire, it is enough to distinguish it from the real earth fire, so that it can only be called an "artificial flame".

Having done this step actually means that "Lu Xin" has no chance to turn back. Now, either he chooses to give up, then his original earth fire will no longer exist, and the flame he created will have no meaning to him, even if it does not disintegrate. Either way, he can only choose to continue to add more flame power and attributes to the flames he has created. In that way, as long as he reaches a certain level, as long as he can keep the flame from disintegrating, he may be able to return to the state of true fire when the mixed attributes in the artificial flame reach a certain level, and thus succeed in one fell swoop!

"Devil's feet!" a low shout, "Lu Xin" stretched out his hand, and a brown object shaped like a hungry ghost's foot was grabbed in his hand, and this thing was the second thing he was going to add to the earthfire.

Ghost foot root, as the name suggests, is named because it resembles a ghost foot. This kind of thing can't be seen anywhere else in the Demon Cultivation Sea, but it is an extremely common thing in the Ghost Domain.

This ghost foot root is very strange, it is a kind of plant, it grows under the land of the ghost domain, it only takes root but does not sprout, and it does not grow branches and leaves. It is said that this ghost foot root is to refine the power of germination and growth to his own body, so the ghost foot root is a rare strong wood attribute material, and many hungry ghosts will use it to refine weapons.

The reason why "Lu Xin" uses this ghost foot root now is naturally not because of the need for a powerful wood attribute in the earth fire, after all, this is different from the essence of the earth fire. For "Lu Xin", only a small part of the wood attribute of the ghost foot root needs to be integrated into the flames, and most of it is the earth attribute that is used to restrain the previous thousand zhang dust.

The use of this is basically based on the understanding of "Lu Xin", the instrument immortal, on refining weapons. In his opinion, in order to add new attributes to the flame without causing too strong repulsion, on the one hand, it is necessary to harmonize the new attribute with the flame itself, but on the other hand, it is necessary to suppress the attribute that was previously added.

Wood can overcome soil, so now "Lu Xin" decided to use the second material Devil's Foot Root. It can also be seen from here that in fact, the method of strengthening the earth fire adopted by "Lu Xin" now is extremely particular, even if it is the same material, the different order of addition will have a great impact on success or failure. If this kind of thing is done by another person, I am afraid that it will fail if it is not done in two or three steps, and even if it is "Lu Xin" himself, it is unknown whether he can succeed in the end.

But what's even harder is that the more materials you add, the more power and attributes you need to be peaceful. So it's going to be more and more difficult to do. And if it really reaches the last more than 900 kinds of materials, it will be unimaginably difficult.

A look of solemnity flashed in his eyes, and "Lu Xin" paused for a moment before striking again.