The first two layers of protection are continuous outbreaks, and only the third layer of protection is separate, that is, Xu Mu's bead that can emit cold and ice qi.

With the influx of Xu Mu's spiritual power, this bead immediately formed a thick layer of blue ice outside the cave, isolating the yellow mist, like a door of blue ice.

Once the first two protective guarantees are triggered, Xu Mu can detect it instantly, and then adapt to it.

With these three layers of protection, Xu Mu took a deep breath, and the blue ice enchantment isolated the dispersion of yellow mist, which was of great help to his cultivation with black water.

Although he couldn't breathe in the aura of heaven and earth around him, with black water alone, Xu Mu was enough to meet the needs of a breakthrough.

With these preparations, Xu Mu had enough confidence to break through to the fourth layer of the Qi Refining Period.

"Water chestnut crystal? After this period of continuous improvement of the task, he drank too much black water, and even the elixir, so that his cultivation has gradually reached the peak, and now the shape of the Great Spirit Sea in his body has also become a symbol of the fourth layer. ”

Sensing the great spiritual sea in this body, now it has gradually become a water chestnut, Xu Mu knows that this is a sign of an imminent breakthrough.

The so-called water chestnut crystal form is to compress the Great Spirit Sea through compression, and gradually form a crystal, which presents a water chestnut, and this form comes out, which is the realm of the fourth layer of the real Qi refining period.

Time flies, and it flies in the blink of an eye.

A month passed in a hurry, and Xu Mu also opened his eyes on this day, in the midst of cultivation, and the moment his eyes opened, a touch of essence flashed.

"Is this the fourth layer?"

Xu Mu raised his hand, and the black tripod in his hand appeared, and as he stepped into the fourth layer, Xu Mu could clearly sense that a breath that was stronger than the third layer of the Qi Refining Period was several times stronger than that of the third layer, spreading out on his body.

And after this month's retreat, the Great Spirit Sea in Xu Mu Dantian was also completely compressed and condensed into a seemingly perfect water chestnut crystal shape.

With the formation of the water chestnut crystal, the growth of spiritual power has also increased tenfold, which is what Xu Mu cares about the most, because with enough spiritual power to operate, then there is no need to often devour the pill to supplement the flow of spiritual power.

"The sign of the fourth layer is the crystal, and the sign of the fifth layer is to condense the crystal into a suction seed the size of a grain of rice, which is the prototype of its own way, and it is also the final form at the beginning of the Qi refining period.

Xu Mumu thought about it, according to the statement in the Qi Refining Formula, the first to fifth layers in the early stage of the Qi Refining Period are the five levels of Qi Extraction, Qi Condensation, Qi Refining, Qi Gathering, and Qi Shadow.

Although each of these five levels has them, once they exceed the fifth layer, they will go to the same end and merge into the first line, and the seeds of the condensed spiritual power will continue to evolve, expand, and finally materialize, forming the foundation of their own path, that is, building the foundation.

For Zhuji, Xu Mu is not in the mood to pay attention to it now, but locks his eyes on it.

Now, Chen Youliang has killed himself, and one of the two will always have to pay the price of his life, which makes Xu Mu have a headache, so far, Xu Mu has never wanted to kill, although he killed a giant sword man, but he was also forced to do it.

Although he doesn't want to kill, this doesn't mean that Xu Mu won't kill people, it's just that he doesn't have to be involved with anyone to malignant cause and effect, so Xu Mu has always reduced his sense of existence to a minimum.

It's best not to let people discover their existence, that's the best, but the sky doesn't fulfill people's wishes, Long Ao's operation has hooked himself with Chen Youliang, and this hook is unsolvable.

"I don't know if I can fight now when I meet Chen Youliang."

Xu Mu's eyes were shining, looking at the wooden barrels in front of him, these days of practice, he almost drank all the black water, Xu Mu sighed, after putting away the wooden barrels, Xu Mu removed the three layers of protection, and then in the orange and yellow pool, with the peak water, and prepared a full black water for backup.

Although he has not encountered danger in the past month, Xu Mu can feel that the yellow mist in this yellow mist forest is by no means ordinary, but he does not want to explore the mystery in it.

"I still understand the truth that curiosity kills cats."

Xu Mu touched the black tripod storage bag in his arms, and then walked out of the Yellow Mist Forest with satisfaction, but outside the forest, Chen Youliang was already gone.

After a little silence, Xu Mu still walked out of the canyon passage very cautiously, although he met a few outer disciples along the way, but after Xu Mu's breath dispersed, they were all shocked.

Xu Mu's current cultivation, looking at Linggu, except for the leaders of the seven camps, there are almost few who can be equal to Xu Mu's cultivation, and even if there is, Xu Mu is confident that he can fight.

But Xu Mu knows better that no one wants to stir up trouble, unless he is a greedy madman.

"To make Chen Youliang give up chasing me, it must be that the treasure in his mouth is about to be opened, so he left, otherwise, with the jade slip in my hand, it can be seen from the previous pursuit that Chen Youliang is definitely not a person who is willing to give up."

"What will be the treasure that can make people's cultivation improve quickly and increase the success rate of foundation building in the future? To make them so persistent, they would rather suppress their cultivation and stay at the outer gate than break through and enter the inner gate. ”

Xu Mu was also very curious about what the so-called treasure looked like.

But when he thought of it, the existence of the five layers of the Great Perfection of the Seven Qi Refining Periods was all coveting it, and he obviously had no chance, so he could only reluctantly give up the idea of seizing the treasure.

After Xu Mu took a deep breath, he continued to complete the following tasks according to the marks on the map.

Due to this month-long retreat, his ranking has also been thrown from more than 200 to more than 400 before, and it is obvious that many people have surpassed him during this period.

"The points for the hundredth place are 1,267, and I, is there only such a small amount?"

After Xu Mu pondered for a while, he accelerated the completion of the task, and even increased the difficulty of the task, and directly began to receive the fifth-level tasks, and received more than a dozen fifth-level tasks in one go.

With the acceptance of the fifth-level task, the mortgage points passed rapidly, and its ranking was lowered to more than 700, almost within the last 100.

Xu Muyou carefully observed, now that a month has passed, the number of disciples in the Spirit Valley is only more than eight hundred, and even at a speed visible to the naked eye, it is still decreasing from time to time.

With the decrease in the number of people, it shows that Xu Mu's competition goals are getting fewer and fewer, and it also shows that those places that disappeared were either slaughtered by others, or they left Linggu in advance in order to protect themselves.

It stands to reason that with the idea of pursuing self-preservation wholeheartedly, Xu Muben should also choose to protect himself, and in the last forty or fifty days, he chose to pinch and explode the teleportation charm and leave.

However, Xu Mu knows even more that he is very poor, if he does not have enough spirit stones, it will be difficult to help his future cultivation and improvement, if he only relies on black water, then it is obviously unreliable, after all, after this period of understanding of Hei Ding, the black water transformed by Hei Ding, its aura is certainly strong, but there is a limit, and this limit, has helped himself, getting smaller and smaller.

Therefore, Xu Mu knew that only by obtaining enough spirit stones and obtaining enough materials could he have the opportunity to become stronger, and only then could he have the cultivation to truly protect himself.

In terms of Xu Mu's thoughts when he first entered the Spirit Valley, he only wanted to enter the top 100, and if he could enter the top 10, it would be the best, because the more spirit stones he obtained, the more he would be helped.