Before entering the Demon Fighting Arena, Xu You heard that this Demon Fighting Arena was the best 'place of trial' in the Nebula Gate, which was a great help to the improvement of his cultivation.

At first, Xu You didn't understand, but now he does.

This is indeed conducive to cultivation, fighting with demon spirits all the time, that kind of experience between life and death, which is a great help for breaking through cultivation, and later Xu You knew that this is like testing how fast a person can run, simply letting him run and letting a tiger chase after him, the effect is absolutely worlds apart.

Crisis is the driving force, honor is the driving force, and with the motivation, no matter what you do, it will accelerate.

Just like the current Xu You, who has been in the Demon Fighting Arena for half a month, he has already broken through to the sixth layer of qi refining.

This speed is much faster than cultivating outside, this is still the result of Xu You staying next to the Blood Spirit Array and never leaving, just the result of fighting with some demon spirits passing by, if Xu You takes the initiative to attack, perhaps, his cultivation can still be improved.

The Blood Spirit Cultivation Array is wonderful, but this time it took more than ten days to repair, but fortunately, on this day, the Four Elephant Linglong Pagoda in the Blood Spirit Cultivation Array, which had no treasure light, emitted its original treasure light again, and the cracks on it all disappeared.

Xu You knew that the restoration of this magic weapon had been completed.

Taking a look, Xu You said secretly, it was indeed a Xuan-level magic weapon, and it was also a Xuantie-level.

It should be said that he has seen a very high-grade magic weapon, which can already be called a magic weapon, at least now, even Xu You's body can't refine such a magic weapon.

In addition, these four elephant exquisite pagodas seemed to have some defects before, so there was only one kind of guardian god power, but after Xu You's blood spirit cultivation array repaired, the previous defects had been repaired.

At this time, looking at the supernatural powers, Xu You couldn't help but be a little speechless.

It's too strong.

This four-elephant exquisite tower can not only hold up a ten-zhang square protective aura cover, but also summon the four elephant beasts to resist the enemy, which is simply offensive and defensive, and extremely strong.

The most terrifying thing is that these four elephant exquisite towers actually have the magical power of 'refining demons'.

The ancient monks had the power of refining demons, refining demons, becoming slaves, becoming pills, becoming magic weapons, and becoming supernatural powers, which can be described as infinite and powerful.

In the modern monk world, although the art of demon alchemy continues to develop, it is said that it only exists in the upper sect, and even in the Ping sect, there is no inheritance of this demon alchemy technique.

After all, this already belongs to the category of ancient immortal arts.

Xu You also occasionally read some curious classics, and then he realized that as someone else, he had never even heard of it.

Who would have thought that the Sixiang Linglong Pagoda that he picked up would have such magical powers, Xu You was naturally very excited, this is really a magic weapon, with such a thing, you can dominate the storm.

And obviously, the monks who were with Cai Wenji before did not summon the Four Elephant Divine Beasts to come out, otherwise they would not have chosen to teleport away in that situation.

It's just that if you want to summon the four elephant beasts out, you need to 'store the spirit', the four elephant exquisite tower has nine layers, if you want to summon it, you need to accumulate enough aura in the formation in the nine-story tower, and now Xu You glanced at it, in the nine-story tower, there is only one layer of spiritual power, and it is obviously far from summoning the four elephant beasts.

Even if you only have protective powers, it is enough to deal with a lot of dangers.

After refining the sixth layer of qi, Xu You's strength naturally increased again, and the art of imperial objects also improved rapidly in the continuous tempering and casting, this kind of technique that has no realm distinction at all is equivalent to no upper limit, how high the cultivation can be improved, how strong the effect of this technique can be.

In terms of the art of imperial objects, Xu You summarized three ways, one is strength and speed, such as controlling a boulder, how strong the strength and speed can be blessed, even if it is just a small stone the size of a fingernail, as long as the power and speed of the blessing are huge enough, it can also cause terrifying destructive power, followed by flexibility, such as a mortal iron in the hands of a swordsman and in the hands of mortals, it is naturally incomparable, if it can be used skillfully, even if it is a branch, it can also become a sword for killing. The last one is the method of distraction, and how many things can be controlled at the same time.

Xu You can divide hundreds of thoughts now, and I believe that when he can divide thousands of thoughts, then this imperial art can really be regarded as entering the house.

As for the demon spirits in the Demon Fighting Arena, Xu You has become familiar with them a lot after the past ten days, and there are basically only two kinds, one is an ordinary demon spirit with slightly weaker strength, and the other is a special demon spirit that is wrapped in black qi.

When encountering ordinary demon spirits, as long as there are not many of them, Xu You can kill them by relying on the art of imperial objects, but if he encounters special demon spirits, unless he fights alone, it is best to escape.

According to Xu You's estimation, that special demon spirit is at least the strength of the seventh level or above in qi refining, or even more than that. Of course, Xu You has also killed some special demon spirits in the past ten days, and although the number of magic crystals collected in the jade slip is unknown, it will definitely not be less.

After putting away the Four Elephant Linglong Tower, Xu You began to look for demon spirits everywhere, and now he encounters several at the same time, Xu You can also deal with them. While cultivating, he hunted demon spirits at the same time, and he also met a few Nebula Sect disciples along the way, but they didn't pay attention to each other and left separately.

A few days later, Xu You's cultivation had improved again, and he had already cultivated to the peak of the sixth layer of qi refining.

This meant that Xu You had reached the second key bottleneck of his cultivation path.

The sixth layer of gas refining is upgraded to the seventh layer of gas refining.

This second bottleneck is equally important, if you can cross it, you can easily upgrade to the ninth layer of qi refining in the future, and the third and fourth bottlenecks are the ninth layer of qi refining to the tenth layer of qi refining, and then the tenth layer of qi refining, and then the foundation of the foundation.

Among some of the lower sects, the sixth layer of qi refining and the seventh layer of qi refining are an extremely important watershed.

Just as the third and fourth layers of Qi refining are the key to distinguishing the outer gate from the inner gate, the sixth layer of gas refining and the seventh layer of qi refining are the key to distinguishing the ordinary and elite of the inner gate.

Carefully calculated, it had only been two months since Xu You's clone stepped into the Nebula Gate and officially started cultivating, and he had actually reached the second bottleneck of the qi refining period, and this cultivation speed could be described as extremely fast.

However, it is obviously extremely difficult to break through this bottleneck in the Demon Fighting Arena.

In addition to hunting demon spirits, the demon spirit world is also a different world, with a lot of refining materials, Xu You naturally did not let go, basically encountered all of them in his bag.

The Qiankun bag in his hand was found from Master Boxi's cave mansion, it was of medium grade, and there were thirty zhang square circles inside, which was enough to accommodate the materials that Xu You had collected along the way.

Xu You's clone can also refine the weapon, after all, the magic weapon used to meet the body in the future may have to be refined by the clone.

On this day, Xu You sat on a suspended boulder and practiced for an hour, and when his mana returned to its peak, he was ready to continue hunting demon spirits, but at this moment, a loud noise suddenly sounded in the clouds and mist in the distance.