Not to mention that the indefinite demon will talk to his subordinates over there, Li Xian, who came to his cave at this time, is another busy situation.

In order to prepare for the upcoming promotion of the Mother of Ten Thousand Demons, he has a lot of work to do, first and foremost is to strengthen the defense, the defense that can be strengthened has many aspects, but considering the time, there is only one point that can be strengthened in a short period of time.

That is the rune formation defense.

For example, the rune spell defense originally arranged near this cave mansion by the indefinite demon is already quite strong, but in the eyes of him, a figure who can be called a rune spell defense master, there are still many places that can be further strengthened.

I don't know if the promotion of the Mother of Ten Thousand Demons this time will attract it, or what level of terrible eradicators it will attract, in short, it is always good to be cautious and prepared.

A few days later, the countless spell defense formations around Li Xian's Cave Mansion were strengthened by him to more than ten times as many as before, and the dense variety of ancient immortal runes and spells seemed to be laid out as if they did not need to be costed, consuming an unknown number of precious immortal cultivation materials, forming large and small formations, tightly surrounding the entire cave mansion.

The light shield released from the outside of the formation was stable and heavy, obviously several levels stronger than before, this was the initial effect of Li Xian's use of the ancient formation rune technique to transform it.

In fact, this was less than one-tenth of the power of the several ancient formations that Li Xian knew in his hands.

However, this is already the pinnacle state that Li Xian can currently strengthen this formation, because the construction time of the real ancient rune formation is usually very long, and it usually takes tens or even hundreds of years to heal, and it usually takes a large number of monks, countless time and energy, and a large number of immortal cultivation resources to make it possible to construct a complete and powerful ancient defense formation.

In a short period of time, all Li Xian can do is to make some basic transformations and strengthenings on the basis of the original formation.

However, even so, this formation, called the Ancient Qing Xuan Lost Heaven Great Array, still made the vicinity of Li Xian's Cave Mansion shrouded in a thick layer of fog, and when the powerhouses of the Idle Soul Refining Realm entered, even if they spied with a powerful divine sense, they would not be able to spy on the specific situation inside the Cave Mansion.

This is the specialty of this Ancient Qing Xuan Misty Heaven Array, and the effect may be average in terms of pure defense, but it has a specialty in blocking the strong Divine Sense Sense.

With the cover of this formation, even if it was only one-tenth of the power of the Ancient Qing Xuan Misty Heaven Array, it was enough to make anything that happened in Li Xiandong's mansion not leak out.

An outsider would never be able to sense anything in the formation, let alone something that was happening.

It was also Li Xian who learned the lesson of being secretly snooped on by him with his powerful divine sense in front of the undetermined demon general before, and almost leaked some important secrets that should not be known to others, so this time he simply made all preparations in advance, and the process of letting the Mother of Ten Thousand Demons advance must be secretly protected without the slightest accident.

I don't want others to know too much about my secrets.

In addition, there are many preparations, and it can be said that Li Xian has made a calculation of all possible situations in his heart, and has made various corresponding countermeasures in advance.

In this way, no matter what happens in the middle of the way, he can safely respond to them one by one, and he will definitely not mess up.

The whole plan is extremely complicated, and it is only after Li Xian uses the data ability that he can list them one by one and keep them in mind.

If it is someone else, it is estimated that looking at this complex response plan, it is already dizzy, not to mention that it must be remembered in mind, and at the critical moment, it is necessary to stay sober, find out the most accurate response strategy from this plan, and implement it concretely.

Fortunately, what ordinary immortal cultivators can't do is not too big a problem for Li Xian, who has the ability to digitize.

Even Li Xian simply gave full play to his strengths, wanted to use his data capabilities to the extreme, and made countless budgets, so this response plan will become more and more exaggerated, zuihou to the point that ordinary immortal cultivators are dizzy when they see it.

If it is expressed in words and recorded in a book, it may be a thick book with the thickness of a palm.

After preparing everything, Li Xian sat down in the center of the formation in the cave mansion and began to wait wholeheartedly for the moment when the Mother of Ten Thousand Demons woke up and the promotion began.

Unexpectedly, the promotion of the Mother of Ten Thousand Demons this time was unexpectedly smooth, and there were almost no accidents in the whole process, so that most of Li Xian's preparations in advance were not used.

The massive preparation plan was wasted, which made Li Xian feel a little regretful in his heart, but compared to the joy brought by the mother of ten thousand demons finally succeeding in the promotion, it was nothing at all.

With the advancement of the Mother of Ten Thousand Demons, Li Xian could obviously feel that the Mother of Ten Thousand Demons in his body had undergone countless changes, all of which were beyond the scope of Li Xian's sensing ability, and the only thing that was deeply imprinted in his mind was that the Mother of Ten Thousand Demons in his body seemed to be getting hotter and hotter, but that kind of hot wonderful feeling didn't really hurt Li Xian's body at all, as if the Mother of Ten Thousand Demons in Li Xian's body was actually in another space at this time.

When the process of promotion came to zuihou, the quantitative change finally produced a qualitative change, at this time the mother of ten thousand demons finally underwent a huge change, under normal circumstances, the breath was hidden to the extreme, and the mother of ten thousand demons could not feel its existence at all, at the moment of successful promotion, finally could no longer suppress its own breath, a shocking momentum rose to the sky, straight into the sky, look at that momentum, as if to break through the dome.

This is still the result of the Mother of Ten Thousand Demons trying her best to suppress it, if not, the exposed aura will probably increase several times.

Li Xian was also quite surprised, when the Mother of Ten Thousand Demons was promoted for the first time, the changes were not so big, but that time the Mother of Ten Thousand Demons seemed to have only evolved from embryos to larvae, but this time it seemed to be from a juvenile to an adult, which can be said to be a key step, which is completely different from before.

With such a drastic action, under normal circumstances, I am afraid that the entire huge main city of Aoki would have already been alarmed.

Fortunately, Li Xian had set up the cover of the formation before, under the cover of the Ancient Qing Xuan Lost Heaven Great Array, although at this time, the Heaven and Earth Yuan Qi in his cave mansion fluctuated violently, and countless mysterious visions of heaven and earth appeared, but the outside world was still quiet, and it was covered up under the heavy fog of the Ancient Qing Xuan Lost Heaven Great Array, as if nothing had happened.

However, Li Xian, who was in the array, clearly sensed that with the exposure of the aura of the Mother of Ten Thousand Demons, everything around him seemed to be different.