The reason why Shen Tong used spirit stones to put into those four recesses to test came from the setting of the soul returning array in that small black room, which placed spirit stones through the long pole in the corner to supply the operation of the magic circle, which obviously had a great similarity with here, so that he subconsciously launched his action, wanting to confirm his guess. Now the lines that emitted white light, the pattern that suddenly flashed in front of them, was really surprising. But at this time, there was no time for surprise and other thoughts, and all their spirits were attracted by the pattern on the ground.

At first glance, it seems to be a square based on the floor of the room, but on closer inspection, you can see that within the square, there seems to be a huge circle tightly tied to it, and it is very complex to be close to the square line. What's even more strange is that the pattern extends inward, and it has always been this combination of square and circle shapes, which seems to be quite incongruous at first glance, but if you look closely, you can feel the subtlety, a sense of three-dimensional space, which is actually shown in this flat shape, which can be described as magical and inexplicable.

As the white light wanders, the more complex and detailed places of the figure in front of you are revealed, and between those circular and square lines, there seem to be a large number of oblique lines intersecting in it, making the picture in front of you more complex, and at the same time, the sense of hierarchy of space is becoming more and more distinct. At this moment, the originally bright light that wandered between the inscriptions and lines suddenly shook, and even if it dimmed, such a sudden change also made the faces of Shen Tong and Youxuan, who were watching with relish, change greatly, and they didn't know what would happen for a while. It's just that, in the midst of their careful vigilance, nothing terrible has happened, but the light has begun to shake, as if it may be extinguished at any time.

Shen Tong's face changed slightly, and after a little groaning, he immediately quickly took out four spirit stones and flew towards the depression, looking at the swaying of the light, it was obviously like a lack of spiritual power, and he could only try his best. Sure enough, just after the four spirit stones flew into there, even if they turned into powder as before, but at the same time, the four dazzling rays of light also wandered among those inscriptions as before, not only showing the patterns engraved in the four places, but also making the room much brighter. Perhaps because of the previous energy as a foreshadowing, the speed of these lights has increased a lot this time, and the patterns in the room have become more and more vivid for a while.

In the fit of the square and the circle, a huge eight-pointed star pattern gradually appeared, and as the light wandered, the light that traveled along the square and circle lines finally merged into the eight-pointed star pattern, and in the center of the star pattern, there was a small circle existence, which seemed to be the most central part of the whole room and these inscriptions. It's just that the consumption speed of the spirit stones there is really amazing, and they can only push those rays of light to move a little bit towards the center, and when they see clearly that these rays of light finally converge to the small circle in the center, and the energy of the entire room has formed a circle of light there, the spirit stones in Shen Tongruyi's bag have been consumed.

Looking at the only four medium-grade spirit stones left in the Ruyi bag, Shen Tong couldn't help but smile helplessly.

The so-called penny to kill the hero, this is the exact description at this moment, Shen Tong has always had a great demand for spirit stones because of the existence of mysterious beads, and he does not need to accumulate spirit stones to buy pills that can improve his cultivation like other senior brothers, but at this moment, all his spirit stones are consumed at once, which still makes him feel very poor! Those four medium-grade spirit stones that have consumed some energy are still left to him by his father in Li Ping's memory, which can be regarded as an inheritance! In this case, he is really reluctant to use it.

With the disappearance of the light in the dark room, it immediately fell into silence, and after Shen Tong was silent for a long time, he couldn't help but ask Youxuan on the side: "What did the predecessors find?"

Youxuan sighed and said, "Except for seeing that this is a formation, the old man really has nothing to gain!" 360 Literature Network

Shen Tong couldn't help frowning and asked, "Haven't you seen a similar magic circle before?"

Youxuan shook his head and said: "The way of the formation is broad and profound, obscure, even a person who specializes in the formation is just biased towards a few familiar and commonly used magic formations, the old man has not studied this, and he really can't recognize it." After pondering for a while, he added: "Judging from the appearance of this place, I am afraid that it is at least ten thousand years old, and the formation left here is the rumored ancient magic circle, and I don't know if there is anyone who can debate it." ”

Shen Tong thought for a while and said: "The key problem at the moment is that I don't know what the purpose of this array is, if I know the purpose, there is a direction to explore, and I don't even know the use, but I don't have a clue." ”

Yu Xuan said: "Judging from the previous situation, the power of this array should be amazing, judging from the fact that the primary spirit stone is only enough to make the magic array light up, if you want to drive this array, you should at least use a medium-grade spirit stone to drive it." And with the amazing spiritual power contained in the medium-grade spirit stone, the power of this array is so great, it can be imagined that at the moment, when you don't figure out the situation of this array, it's best for Xiaoyou not to try it at will, otherwise if you fall into the magic circle, I'm afraid it will be a big trouble. ”

Shen Tong couldn't help but nodded, and there was inevitably a sense of loss in his heart. Previously, I wanted to investigate here to see if I could find some treasures or exercises left by ancient monks, which was a great improvement for his strength, especially the spiritual treasures, he was even less pitiful, except for an ordinary condensing flag, there was nothing else at all, which could be described as extremely shabby. This is naturally the reason why he did not hesitate to spend an amazing amount of time and energy to find this place, but what made him feel helpless was that there was nothing else here except this magic circle, not only did it cost him a lot of time and energy, not to mention, but even the spirit stones on his body were consumed, which can really be called a loss of his wife and a soldier!

It's just that the matter has come to this, and no matter how depressed and helpless he is, Shen Tong can only carefully and carefully explore all corners of the room in detail, and after confirming that there are really no secret rooms and omissions, he reluctantly closed the stone door and retreated. As for the patterns that appeared in the house through the consumption of spirit stones, he firmly remembered them, and planned to investigate and verify them in detail after he went back, and figure out what the effect of this ancient ruin buried by yellow sand was. Speaking of which, the appearance of this magic circle was the only gain he had obtained from all his hard work and strength, and this situation couldn't help but make him shake his head and smile bitterly.

In the following days, Shen Tong also took advantage of the night to clean up all the four corners of this black room, but it was quite a discovery, around this room, there were a total of eight slightly smaller rooms, and the strange thing was that the door of each room was aimed at the empty black room, I don't know what the purpose was. Curious, Shen Tong went in every room to investigate, and there was no longer anything empty, but there were some stone beds and chairs and other things in each of them, simple and heavy, vicissitudes and charming. It's just that there is nothing other than these things, and there are no inscriptions and circles in these rooms, as if they are ordinary rooms.

It's just that this place is so weird, and the arrangement of these houses is also strange, and what is the use of it is really difficult to figure out. It took nearly a month to finish the investigation here this time, and it has been nearly a year since the sand beast attacked the ore vein before, so for such a long time, the danger should have been removed! Although it has not stopped since joining the sect, many times, it has to be said that as a disciple of Tianxing Valley, it is really a lot of convenience, just like to explore the mystery of this magic circle, I am afraid that only the library of the sect has records from ancient times!