Qi An didn't dare to waste time, so he hurriedly stepped onto the stone platform and sat cross-legged in the center of the circle, the white mist completely enveloped him, and he was nowhere to be seen.

Calm his mind, his hands were sealed, the Seven Peerless Exercises were running at full strength, and the Spirit Devouring Cyclone was spinning extremely fast, and a shocking roar suddenly sounded in Qi An's heart, like a giant dragon roaring, like a Kunpeng resonance.

Then I heard a burst of rumbling sounds, such as a mountain torrent erupting, like angry waves crashing on the shore, and the aftermath echoed throughout the stone room, endlessly, as if he was in the midst of a stormy wave, which made Qi An'an feel shocked.

From the outside, the position of Qi'an's dantian is like a round of scorching sun, dazzling and blazing, radiating thousands of colorful gods, easily tearing through the vast white mist, making the stone interior wall glowing and rippling.

At the same time, the earthly vein aura that filled the entire stone chamber and was so thick that it was almost about to form water droplets, as if it was stirred by an invisible force, tumbling and surging, condensing and forming, turning into one after another arm-thick milky white qi columns, all of which poured towards Qi An's body, frantically burrowing into the body surface acupoints, and converging towards the dantian along the meridians, where there was an invisible mouth, greedily and tirelessly devouring the gathered aura.

Unexpectedly, in the ninth layer of the underground, Qi An just meditated and cultivated, and he presented a shocking vision, and the scene of devouring the spiritual energy of the spirit devouring demon fire was too terrifying, it didn't look like cultivation at all, and it was more appropriate to describe it as crazy plundering.

Qi'an's dantian was like a gluttonous mouth, the whale sucked and swallowed angrily, a large amount of earth vein spiritual energy poured into it, and the spirit devouring cyclone expanded, and the true qi cultivation skyrocketed, soaring up like a cloud.

This picture, this effect, is so scary that even Qi An himself can't accept it, and he almost lost his mind, causing him to go crazy.

Fortunately, he reacted quickly, stabilized his emotions, no longer cared about the changes in the dantian, his mind gradually tended to be empty, there was no sadness and no joy, he held the yuan and kept one, just concentrated on refining qi, and was not moved by external objects, so as to avoid happiness and sorrow.

There was originally a huge amount of heaven and earth aura in the stone room, but it was swallowed by Qi An for a while, and the content was greatly reduced, and it became thin at a speed visible to the naked eye.

The Spirit Gathering Array under him began to run rapidly, thousands of mystical runes lit up, and a large amount of earth vein aura was gathered and extracted by it, and sent into the stone chamber for Qi An to swallow.

The Earth's Center Cultivation Tower is divided into nine layers, and each layer has a different Spirit Gathering Array, the closer it is to the Earth's Center, the larger and more complex the Spirit Gathering Circle, and the greater the effect.

The four Spirit Gathering Arrays on the ninth layer are the most advanced, and the ability to attract the leyline aura is the strongest, and it will be guaranteed first, and only when the supply demand of the ninth layer is met, the extra leyline aura will be uploaded to the eighth layer, and even the seventh layer.

And below the ninth layer, there is actually a tenth layer, but there is no cultivation secret room there, only a closed formation space, which is used to store excess leyline aura.

The aura produced from the depths of the earth was first brought here for preservation, and then supplied to the entire Earth's Core Cultivation Tower.

However, because the various cultivation rooms are often used, there is not much spiritual energy stored, and once it is withdrawn, the entire Earthcore Cultivation Tower will be depleted in a short period of time, and the supply will not be available.

As Qi An's whale swallowed angrily, the massive spiritual energy in the stone chamber gradually became scarce, obviously in a state of short supply, and the spirit gathering array under him was running at full strength, and a large number of stored spiritual qi from the tenth layer below was replenished, and the remaining spiritual energy accumulated by the Liu clan for many years was wantonly plundered and stolen, and it was drastically reduced at a rapid speed.

Not only that, but even the other three cultivation rooms on the ninth floor were affected, and the existing aura gradually shifted along the formation vein towards the stone room where Qi An was.

"What's going on? The aura here seems to be getting scarce!"

In the stone room opposite Qi'an, a tall young man was opening his eyes and whispering, his eyes were cold and sharp, and his temperament was domineering and arrogant, it was the youngest son of the sword king Liu Yuanshan, Liu Jingyu, who was known as the "Little Knife King".

Liu Jingyu was deeply favored by Liu Yuanshan, and was pinned on by the Sword King, from the first day of cultivation, he got the best cultivation, and other Liu clan people entered the geocentric cultivation room, they had to pay fees in accordance with the rules, even the direct children were no exception, only Liu Jingyu, without any cost, come if you want, leave if you want, there will always be a stone room on the ninth floor that is left for him, the reason why he has achieved such an achievement at this age is not only because of his own talent, but more importantly, because of the frightening inclination of resources.

With such a cultivation environment, as long as it is not a pig, it is not far from it.

Of course, if you are really stupid like a pig, it is impossible to be loved and cultivated by the King of Knives.

You must know that although the underground spiritual vein can produce spiritual energy endlessly, there is a process, which is not really inexhaustible and inexhaustible, and its output efficiency is basically fixed.

If you produce more and use less, you will slowly accumulate a surplus, and you will accumulate more and more, and once you take too much, you will not be able to make ends meet, and after you run out of surplus, you can only wait for the aura to slowly generate.

It's like a towering fruit tree, it can produce a lot of fruit every year, if you eat less, there will be excess fruit left, if you keep it properly, you can eat it immediately when you want to eat it in the future, and if the output of each year is eaten, then no matter how hungry you are, you can only wait until the next year's fruit.

The spiritual veins are like this, they are producing spiritual energy all the time, but they can't afford to support all the monks in the Sword King's Mansion, and it is impossible to support all the disciples of the Liu family to cultivate with all their strength, especially those who have a relatively high cultivation realm and have a greater consumption, not to mention one spiritual vein, even ten spiritual veins are not enough, so even the direct clansmen of the Liu clan have no privileges in this regard, and if they want to use the geocentric cultivation room, they must pay a price.

Liu's three major Rongyuan real people also do not have this privilege, although their status is high, but their realm cultivation is also high, if they rely on the earth's leyline aura to cultivate at full speed, just the consumption of one Rongyuan real person is more than the sum of thousands of Qi Condensing Cultivators, as long as he is in the center of the earth cultivation room, others have almost no spiritual energy available.

For example, there is a big basket of fruit, which can feed a bunch of people, but at this time, there is a big fat man who is arrogant and domineering, he eats a lot, and one person can eat most of the basket, and he must be fed first, so that others can eat, so that everyone except the big fat man will not be able to eat enough.

Therefore, even the noble Rongyuan Zhenren rarely stays in the geocentric cultivation room to cultivate, only this Liu Jingyu, who is favored by thousands of people and has high hopes, can be regarded as the young man with the best cultivation conditions in the entire Qingzhou territory, and is also the successor of the Sword King's Mansion, so he can use the ninth-layer cultivation room unscrupulously.

Liu Jingyu is just a cultivator who refines the gods, usually cultivates at the ninth layer, and the supply of aura is always in excess of demand, and he has never seen a decrease, and today he suddenly noticed the change in the concentration of aura, so he was a little puzzled, but he just muttered, he didn't think much about it, and continued to meditate and cultivate, not knowing at all that it was because of a gluttonous beast coming from the opposite side, and after absorbing the aura over there, he came to steal it.

With the passage of time, not only the ninth layer, but all the cultivation rooms of the entire Earth Center Cultivation Tower were affected, and the aura content decreased to varying degrees, and many people woke up from their cultivation state, watching in amazement as the aura around them became weaker and weaker, and all kinds of random speculations surged in their hearts.

It's just that the changes in the upper layers are relatively late, and the negative impact of the Soul Devouring Demon Fire devouring the earth's leyline aura is from the bottom up, starting from the ninth layer, gradually spreading to the eighth layer, then to the seventh layer, and then to the sixth layer, the fifth layer, and the fourth layer......

By the time this influence gradually spread to the eight-cornered hall on the top floor, two hours had passed, and the guards who were shaped like stone statues were awakened one by one, all because they noticed a change in the concentration of spiritual energy, which seemed a little strange.

More than a dozen pairs of eyes opened one after another, and they all looked at the majestic old man who had talked to Qi An, this old man was the person on duty this month, but he was in charge of all miscellaneous matters.

"Liu Quan, what's going on, why is the concentration of aura decreasing here?" asked an old woman with furrows, wrinkles, and stony skin.

Liu Quan, who had a majestic face, heard the question, waved his hand, and the phantom of the inverted pagoda appeared in front of him, as if everything was as usual, and there was nothing unusual.

This is only a projection of the internal structure formed by the formation, and you can only watch the use of the cultivation secret room, and you can't see the direction of the spiritual qi flow.

Liu Quan frowned, as if he was pondering, but he couldn't figure out the reason, so he could only shake his head in the end, and the answer was only two words: "I don't know!"

Someone was more careful and noticed something unusual, so he asked, "There are two cultivators on the ninth layer, who is the other one?"

Liu Quan replied: "It's an inconsequential little character, his identity is a divine sword guard, I don't know which family he comes from, he has some assets, if he wants to experience the ninth layer underground, the old man will let him go." ”

The identity and origin of the Divine Sword Guard have been confirmed through investigation, and it is difficult to mix in the spies, plus Liu Quan said that this person is just an "insignificant small role", so he didn't take it to heart, and the person who can affect the change of the earth's leyline aura must at least reach the Rongyuan Realm, even if it is the peak of God Refining, it is difficult, so he did not suspect the cause of the change on Qi An's head.

A thin old man said up, "Is there something wrong with the underground spirit vein?"

Another person said: "The spiritual vein is deep underground, except for the prince, only a few Rongyuan real people in the clan can approach, we can't reach the source at all, I'm afraid this matter can only be reported to the prince first, and the prince will be the master." ”

"Don't be in a hurry first!" Liu Quan shook his head, "Although the aura content has decreased, it has not disappeared, maybe the tidal trough has come in advance, and let's take a look first, there is no need to alarm the prince as soon as there is a disturbance." ”

The so-called tide refers to the occasional fluctuation of the aura output of the spiritual vein, sometimes high and sometimes low, and it is not as constant as a day for ten thousand years.

The Sword King Mansion has been obtaining this underground spiritual vein for more than two hundred years, and it has also experienced several periods of low spiritual energy, and the production has plummeted, resulting in no supply, which is somewhat similar to the current situation.

Most of the guards agreed with this statement, so they pressed the idea of asking the Sword King, and waited a day or two to see how the situation changed.