After exchanging it, he exchanged it for knowledge books about pills in the Dan Pavilion, because Xu Mu learned that the records of the pills in the Dao Pavilion were not as complete as those in the Dan Pavilion, so the ultimate purpose of this trip, in addition to selling spirit plants, the most important thing was to master the knowledge of pills.

This was extremely important to Xu Mu, because nowadays, most of Xu Mu's many elixirs Xu Mu didn't know, and they couldn't be found in the knowledge books in the Dao Pavilion.

After harvesting these, Xu Mu purchased some Qi and Blood Pills, the role of Qi and Blood Pills is very important, it can allow people to play a role in reviving when the Spirit Sea withers, compared to refining Qi Purple Pill, the role of Qi and Blood Pill is more effective.

Back in the cave, Xu Mu began to understand and control the knowledge of the elixir.

Time flies, half a month flies by, in this half a month, in addition to understanding the knowledge of the elixir, Xu Mu also has a great interest in the magic of alchemy, but Xu Mu knows even more that once he embarks on the road of alchemy, he can either excel, if he wants to improve his cultivation with only the refined elixir, it is definitely a trouble with half the effort.

What's more, the path of alchemy requires an understanding of the art of grafting plants and trees, and the art of grafting, which is varied, is not something that can be done in a short time at all, and requires extremely high talent.

Xu Mu knows this.

"The blue is the Death Pill, the red is the Qi and Blood Pill, the purple is the Qi Refining Pill, the cyan is the Condensation Pill, the black is the Poison Pill, and the yellow is the Blood Dust Pill, these six kinds of pills, in addition to their different effects, red and purple cyan and yellow are good to say, and they have all kinds of different help for improving cultivation, but after all, the Blue Death Pill belongs to the Explosive Pill, which is most suitable for setting up formations, and the black Poison Pill needs to be crushed and used, and is often used in preparation for the enemy."

Xu Mu analyzed the only six kinds of pills left in his storage bag, and his expression gradually fell into contemplation, the Qi and Blood Pill can only be used when the Spirit Sea is exhausted, in order to play its greatest role, the Qi Refining Pill and the Condensation Pill are both used in cultivation, the former swallows and acts on the operation of the Spirit Sea, and the latter swallows it, which is to form a whirlpool of itself, acting on the traction of the Heaven and Earth Spiritual Qi into the Spirit Sea, as for how much the Spirit Sea can absorb, it depends on the strength of the cultivator's cultivation.

Among them, the Yellow Blood Dust Pill is the best, and it is also the best pill for improving cultivation.

"Now there are eight Death God Pills, Qi and Blood Pills, Qi Pill Refining Qi Pills, Condensation Pills, Blood Dust Pills, a total of eighteen pills, twenty-one Poison Pills, and thirty-three magic weapons."

In Xu Mu's deep groaning, it was difficult for the magic weapon to play a role for the time being, just like a short battle with a foreign beast, Xu Mu clearly felt the gap, and he couldn't play the role of the magic weapon at all.

Therefore, at this moment, Xu Mu can only choose to improve his cultivation again, after half a month of hard work, Xu Mu seems to have sensed that one day, he will be able to completely break through and successfully enter the second layer of the Qi refining period.

"According to the rules of the Spirit God Sect, as long as there is a breakthrough, the sect will inevitably send the task again within three days of the breakthrough, the Spirit Valley Trial, is there still two months?"

Xu Mu knew that the Linggu trial was terrifying, especially now that there were only two months left, if he didn't improve his cultivation quickly, then he would inevitably be in danger in the Linggu trial.

Not to mention the demon beasts in the Spirit Valley, just because they didn't enter the seven camps, they would be targeted by everyone, after all, people who don't have backers are the least threatening, especially when their cultivation is still weak, they are lambs to be slaughtered.

The next day, Xu Mu opened his eyes from his cultivation, and at the same time, a roar came from his body, and a wave of cultivation fluctuations that exceeded the Qi refining period spread out.

At this moment, Xu Mu successfully broke through and achieved the second layer of the Qi Refining Period.

Sensing the majesty of the small spiritual sea in the dantian, Xu Mu was satisfied in his heart, this kind of cultivation speed, for him, was actually very satisfied, breaking through the first layer of the qi refining period in half a month, and breaking through again in a month, this is definitely fast.

With the entry of the second-layer cultivation in the Qi refining period, Xu Mu's sensing ability has also been improved by leaps and bounds, and with the improvement of cultivation, Xu Mu knows that he is a little stronger again.

But Xu Mu knew even more that this was not strong enough, far from enough.

"After the second layer, the cultivation of the third layer is even more difficult, and it is necessary to transform the small spiritual sea into the great spiritual sea, so that the dantian is full of spiritual light."

Xu Mu knew very well that with the arrival of the second layer, the aura required by the third layer would inevitably increase exponentially.

Although he was mentally prepared, but at this moment, Xu Mu discovered that the so-called small spirit sea turned into a big spirit sea was far from being as simple as he imagined.

The formation of the Great Spirit Sea requires nearly ten small Spirit Seas to form, that is to say, it is necessary to condense ten more small Spirit Seas, and then fuse them to transform them into Great Spirit Seas, so that they can be regarded as the third layer of the Qi Refining Period in the true sense.

It is precisely because of this that the strength of the three layers of the Qi Refining Period is also obvious, and the three layers of the Qi Refining Period, although they cannot complete the complete valley reclamation, but they also have the effect of eating once in ten days.

Especially after entering the third layer of the Qi Refining Period, you can start to control the magic weapon, and the power of the spell will be greatly improved.

"The second layer of the Qi refining period, the beginning of the spell, with the huge spiritual power of the small spirit sea, the magic power, there is a certain foundation, so now, what spell should I learn?"

Xu Mu's eyes flashed, in the many storage bags, although each storage bag had a spell, they were basically the same, that is, the Spirit God Sect's gravity technique and fire snake technique.

The former requires too much spiritual power, but the power is amazing, and the invisible palm turned into contains the power of the dragon elephant, and the latter is simple to cast, but it is a universal and easy-to-control spell of the sect, basically everyone can do it, therefore, this technique has little effect on the disciples of the Spirit God Sect, and Xu Mu knows that the danger of the Spirit Valley is important in the same door, not in the demon beast.

Xu Mu left the cave mansion and went to the Dao Pavilion, where the Spirit God Sect's magic center was located, and any second-layer disciple in the Qi refining period could use his identity token to receive a set of spells.

However, although it is said that you can go and get it for free, there are harsh conditions, that is, you must complete the first task of the sect, but this task seems to be harsh, but it is actually very easy.

Because they were basically completed before the breakthrough, the seemingly harsh conditions on the Dao Pavilion were actually decorations.

Xu Mu entered the Dao Pavilion and observed hundreds of spells, among which there were many types, such as spells that tended to escape, defensive-type spells, and speed-type spells.

When it comes to the elixir, there are only two kinds of techniques: the fire snake technique and the gravitational technique.

However, these two were given up by Xu Mu, and Dao Pavilion only had one free qualification, and he could only receive one set, plus those two sets of spells, he had a lot, so what Xu Mu needed was a different set of spells.

"Dominating the Dingjutsu!"

When Xu Mu saw this scroll of magic powers, he was immediately attracted by its three words.

"Control Wanding, you can kill everything."

Under the name of the spell in each volume, there were a few simple descriptions, and the description of this mastery technique made Xu Mu suddenly interested in it.

Xu Mu decisively chose the Tripod Technique, although its cultivation difficulty was rated as extremely difficult, but Xu Mu didn't care, because of a black tripod, so Xu Mu saw the Tripod Technique, which was extremely kind.