From the shadow of the upside-down pagoda, it can be intuitively seen that most of the small red light points are concentrated in the upper four layers, while the lower five layers are relatively sparse, especially the ninth layer at the top of the tower, there is only one red light point, which is extremely conspicuous.

As for the reason for the uneven distribution, it is mostly because of the "use price" mentioned by the stone-skinned old man. It is not difficult to guess that the higher the surface, the lower the cost of use, and the deeper the bottom, the higher the cost of use.

So Qi An asked, "I wonder how much each floor is rented?"

The old man was very patient, and explained to him: "The first layer, only twenty-five yuan beads per day, each layer after that is doubled on the basis of the previous layer, the second layer is fifty yuan beads per day, the third layer is one hundred yuan beads per day, and so on on the next few layers, if you have military merits, you can use military merits to deduct yuan beads." ”

Hearing this price, Qi An couldn't help but gasp, it was really expensive to use this geocentric cultivation room, even if it was suitable for the first layer of the early stage of condensation, it would take twenty-five yuan beads to rent for one day, which was equivalent to the price of one Xuanyuan Pill.

Judging from the military salary of the Divine Sword Guard, the monthly salary of a bar of the Divine Sword Guard is only three hundred yuan beads, and the cultivation secret room suitable for them is on the fourth floor, and the daily rent is two hundred, and the military salary for two months can only stay on the fourth floor for three days.

Of course, the "suitable" mentioned by the stone-skinned old man means that the fastest cultivation effect can be achieved, if you want to save a little, the divine sword guards can also choose the first three layers, the lower the number of layers, in fact, the higher the cost performance, even if it is the first layer, the aura content is also very rich, several times higher than the outside world.

In addition, there were many juniors of the Qi Condensation Realm in the Liu clan, which caused the cultivation stone rooms on the first few floors to be very rarely idle, and they were almost all occupied by dense red small light spots.

Among these renters, most of them must be from the Liu clan, and the Divine Sword Guards should only account for a very small minority, on the one hand, because the total number of Divine Sword Guards is not as good as the Liu Clan, and on the other hand, because the vast majority of the Divine Sword Guards are at the peak of Qi Condensation cultivation, and the importance of Qi refining is greatly reduced.

When you reach the peak of Qi Condensation, you have to start focusing on improving the strength of the Yuan Shen, and Qi refining is secondary, because only if the Yuan Shen is strong, you can advance to the level of refining the God, so most of the Divine Sword Guards will cultivate at the Heart Stone, and there are relatively few people who come to the Center of the Earth Cultivation Tower.

It's no wonder that when Ram Qiyu led Qi An to introduce various places that day, he was reluctant to talk more about this geocentric cultivation room, because for the Divine Sword Guard who had not entered the refining god, the role here was not as good as that of the Heart Stone.

But here in Qi'an, it is different, although his combat power has reached the early stage of refining gods, but his true qi cultivation is only in the middle stage of condensation, and he is still far from the peak of condensation, there is a lot of room for improvement, and the center of the earth cultivation room is an extremely rare cultivation holy place for him.

However, in the face of such an astonishing use price, Qi An had to be cautious, he naturally would not rent the fifth floor of four hundred yuan beads a day, it was too extravagant, so he moved his gaze up, looked at the small vacancy on the third floor that was not occupied by the red dot, and asked: "I want to rent the third floor, but only for one day, is it okay?"

"Of course you can, you hand over the Yuanzhu to me first, and I will open the ban for you, and when this time tomorrow, the copper bell in the secret room will ring, reminding you to leave, if you don't leave, don't blame the old man for being polite!"

Speaking of the back, the old man's voice became much more severe, and he had a terrifying power, which made people have to obey, which shocked Qi An's heart and made him dare not disobey.

It can be seen that the strength of this old man's cultivation is extremely amazing, much more than Qi An, maybe not under the command of the divine sword, most of them are also great cultivators at the peak of god refining, but for some reason, it looks like a stone statue.

In fact, not only this majestic old man, but also more than ten stone statues in this stone hall, all of them are living people, it is a secret technique that the Liu clan obtained from him, which can refine his own flesh and blood body into a magic weapon body similar to a stone statue, which can not only greatly improve the physical defense, but also delay aging, and live for decades longer, the only drawback is that the path of cultivation ends here, and it is impossible to break through to the Rongyuan realm, and he will be trapped in the peak of refining gods for life.

In the Liu clan of the Sword King Mansion, all the peak clansmen who have little hope of being promoted will practice this secret technique, which can not only improve their combat power to a certain extent, but also delay aging and increase their lifespan, which is the secret of the Liu clan, and very few people in the outside world know about it.

These people became one of the Liu clan's hole cards, and more than a dozen great cultivators at the peak of God Refining were all used to guard the underground spiritual veins and become guardians to prevent unscrupulous people from infiltrating and destroying.

Qi An took out a hundred yuan beads and handed them to the old man, after the other party accepted the yuan beads, he waved his hand, and the inverted pagoda phantom disappeared, and a rumbling dull sound sounded, coming from the end of the original stone steps, the ground began to sink, cracking from it, and an entrance slowly appeared, and the stone steps continued to extend downward, winding and circling, leading to the depths of the earth.

"Go down, remember that you are the third layer, don't go wrong. The stone-skinned old man spoke indifferently, and after speaking, he closed his eyes and remained motionless, truly like a stone carving.

Qi An answered, and walked all the way down the newly appeared stone steps, passing through the first floor, without stopping, passing through the second floor, and continuing, and finally after more than twenty circles, he came to the third floor.

The structure of this Earth-Center Cultivation Room is really like an inverted tower, and the further down it goes, the smaller the space, and the smaller the number of cultivation secret rooms.

When passing through the first floor, Qi An took a cursory glance, there were independent small stone chambers everywhere, and he couldn't count how many there were for a while; when he reached the second floor, it was not easy to judge, but obviously the space was smaller, and the number of stone chambers was also reduced a lot; until the third floor, Qi An had time to take a closer look, and found that the number of stone chambers was nearly half a hundred.

Walking down the stone steps, there are lanes on the front and back, left and right, cut vertically and horizontally by the cultivation secret rooms, most of the portals are closed, obviously there are people cultivating inside, only one or two open doors, no one uses them.

Qi An no longer rubbed down, and quickly found a free cultivation secret room and entered it, which was empty, only a raised circular stone platform, more than a foot high, engraved with countless mystical runes, there was a glimmer of light shining in the lines, and the slightest trace of aura visible to the naked eye rose from the circular stone platform, like clouds and mist.

Take two steps forward, sit down cross-legged on the stone platform, the stone door will automatically close, there is a "jingling" sound, three sounds will stop, Qi An only found that there is a small copper bell hanging above the inside of the stone door, probably only a hint.

The circular stone platform under his body is probably the so-called Spirit Gathering Array, which can effectively extract the earth's vein aura and gather it in his body, Qi An just sat on it, and before he started to cultivate, he felt that his whole body was wrapped in lush aura, which was very comfortable.

Close your eyes, seal your hands, close them in front of your chest, and run the [King Kong is not bad] body refining exercise with all your strength, only to see that the mist around your body seems to be attracted, through the armor and clothing, straight into the body.

He was secretly frightened, and he could clearly feel that the cultivation speed at this time was very amazing, almost ten times that of usual, if he could maintain this cultivation efficiency all the time, at most a few months, he would be able to cultivate [King Kong is not bad] to the perfection of the golden body.

In addition to being shocked, Qi An couldn't help but exclaim: "It's really a holy place for cultivation!"

It is no wonder that the Liu clan has many masters, and in just two hundred years of development, it is more majestic than many thousand-year-old families.

Qi An dispelled distracting thoughts and continued to work for a long time, only after about two hours did he open his eyes, and found that the surroundings were still surrounded by mist, not the slightest light, obviously the speed of the magic circle to gather spirits exceeded Qi An's absorption speed, and the supply of spiritual energy was extremely sufficient.

It must be known that the higher the cultivation, the higher the efficiency of absorbing spiritual energy when cultivating, and there must be a sufficient supply of spiritual energy in order to achieve the fastest cultivation speed.

Qi An's body refining realm is equivalent to the late stage of Qi Condensation, and after cultivating for two hours, there has been no problem of insufficient supply of spiritual energy, which is enough to prove that this third-layer cultivation secret room, if it is really as the caretaker said, can meet the normal needs of the late stage of Qi Condensation, if it is the peak of Qi Condensation, there may be a situation where the supply is not available, then you need to go to the next layer to achieve the fastest cultivation speed.

But if the demand for aura has been met, it is a waste to choose a lower cultivation secret room, even if the aura is abundant, it will be in vain if it cannot be absorbed, and it will only increase the consumption of yuan beads in vain.

And the vast majority of the Liu family's disciples and divine sword guards were in the Qi Condensation Realm, which was why the upper four floors of the Earth's Core Cultivation Room were so tight, and as for the fifth to eighth floors suitable for cultivating in the Divine Realm, most of them were unmanned and had few users.

It's just that although the geocentric cultivation room is good, the price is not expensive, and it is really calculated, taking the pill is still faster and more cost-effective, but because the pill is resistant, the effect of taking a large amount of it is not good, and even erysipelas will accumulate, so the geocentric cultivation room is still very popular, especially the first four floors are very tight, and there is often overcrowding.

After cultivating for two hours, [King Kong is not bad], Qi An's thought moved, and he muttered, "Try the [Seven Absolute Sword Technique] again." ”

As soon as he thought of it, Qi An immediately changed his exercises, from refining his body to refining qi, and the earthly vein aura that was absorbed into his body no longer dispersed into the limbs and hundreds of remains, but followed a specific meridian route to circulate around the heavens, and finally the qi sank into the dantian.

At this time, the Soul Devouring Cyclone in the dantian began to change violently, and the rotation speed continued to increase, far exceeding the limit, and then a huge suction force was generated, and the spiritual energy of the earth veins surrounding Qi An was affected, turning into a torrent of spiritual energy, and no matter what meridian operation and practice route, it directly rushed to the sea of dantian qi.