In the center of the stone chamber, there is a huge circular magic circle. The magic circle is composed of countless mysterious runes and shines with a faint spiritual light.
In the center of the magic circle, there are ten grooves, nine of which are empty. Only one groove still contains a blood-colored crystal stone that has lost most of its luster and is full of cracks.
Obviously, that was the energy core that supported the operation of the array eye before, but now it is at the end of its strength.
Around the magic circle, thick shadows of chains could be vaguely seen, extending into the depths of darkness, connected to some terrifying existence.
"Here is the core formation of the Demon Locking Tower, called the 'Ten Square Formation'." The old man's voice came over, "This formation uses ten high-level blood-colored crystals as the core, activating the power of the earth's veins to suppress the demons in the tower. The previous piece was already the last inventory of the sect, barely supporting it for a hundred years."
Ye Feng nodded and glanced at the grooves.
"Put in your dragon blood crystals one by one," the old man ordered.
Ye Feng responded, picked up a piece of dragon blood crystal, and after a while, found a groove that was most suitable for the energy fluctuations, and carefully put it in.
As soon as the dragon blood crystal enters the groove, it is instantly embedded and emits a dazzling red light.
The runes on the magic circle lit up, and the energy fluctuations in the entire stone chamber were shaken.
Ye Feng followed the law and put the remaining nine dragon blood crystals into the corresponding grooves one by one.
Every time a piece is put in, the light of the magic circle becomes stronger, and the evil spirit in the air is also suppressed.
When the tenth dragon blood crystal returned to its place, the entire "Ten Square Array" suddenly started to move, and a crimson light rose into the sky, illuminating the entire underground stone chamber like daylight.
"Buzz——!"
In an instant, an energy ten times more powerful than before burst out from the center, and the entire Demon Locking Tower shook violently.
Ten blood crystals burst out with extremely bright light at the same time, reflecting each other to form a huge energy vortex.
Seeing this, the old man showed a smile of relief on his face: "Okay! The formation is stable!"
"Ouch - roar -"
Deep in the tower, countless demons roared unwillingly and painfully, but they were quickly suppressed completely and became silent again.
After a long time, the light gradually converged and the formation returned to smooth operation, but the power it exuded was several times more powerful than before.
The demonic energy in the Demon Locking Tower has also been purified a lot, and it is no longer as violent as before.
"It's done! The centuries-old worries of the Demon Locking Tower are finally resolved today! Boy, you are indispensable!" The old man's voice came over.
At this moment, a long-lost mechanical prompt sounded in Ye Feng's mind.
[Ding! Repair of the Demon Locking Tower Formation Eye has been completed! 】
[Task reward: Improve the cultivation level by two levels. ]
As soon as he finished speaking, a huge and pure torrent of spiritual energy appeared in Ye Feng's body, like an enlightenment, pouring crazily into his Dantian Qi sea.
Ye Feng's expression changed, and he quickly sat down cross-legged, running the technique with all his strength to guide this sudden huge energy.
His cultivation level is already at the peak of the third level of the Golden Core, and he is only one step away from the fourth level of the Golden Core. At this moment, driven by this energy, the bottleneck was broken almost instantly!
Boom!
Fourth level of golden elixir!
However, the torrent of energy did not stop there and continued to pour in, pushing his cultivation level to continue to rise.
Ye Feng felt a shock all over his body. The golden elixir in his body suddenly grew in size, and the aura exuded became more condensed and powerful.
Five levels of golden elixir!
In just a short moment, his cultivation level broke through two levels in a row, jumping from the third level of the Golden Core to the fifth level of the Golden Core! And the foundation is extremely solid, without any sense of emptiness.
The old man could feel that the energy in Ye Feng's body was soaring at an incredible speed. This kind of speed of improvement is simply unheard of!
"What kind of monster is this kid?" The old man felt a turmoil in his heart. He originally thought that it was a great opportunity for Ye Feng to take out ten dragon blood crystals, but he didn't expect that there was a bigger secret hidden in him.
Ye Feng slowly opened his eyes, and a light flashed through his eyes. He felt the power in his body that was several times stronger than before, and a satisfied smile appeared on his face.
"The fifth floor of the golden elixir, not bad, not bad."
Ye Feng nodded with satisfaction, got up and returned to the eighth floor of the Demon Locking Tower.
"Boy, you..." The old man wanted to ask something, but finally swallowed his words. Everyone has their own secrets, and it’s not a good idea to get to the bottom of them.
"Thank you, senior, for your advice." Ye Feng saluted the old man.
The old man waved his hand and looked at him with a complicated expression: "It's because of your good luck. Now that the Demon Locking Tower is stable, the sect has survived the disaster. For your great achievements this time, the sect will definitely give you a heavy reward."
Ye Feng smiled: "The sect's reward is a trivial matter, the key is to solve the problem. By the way, senior, about the last time you mentioned that someone secretly attacked me, causing the Demon Locking Tower to move earlier..."
Hearing Ye Feng mention this, the old man's face darkened: "I have been sending people to secretly investigate this matter, but the other party is extremely secretive and there are no definite clues yet. However, what is certain is that this person must have some knowledge of the formation of the Demon Locking Tower. "
A cold light flashed in Ye Feng's eyes: "I understand. I will investigate this matter myself."
No matter who dares to plot against him, he will not let it go easily!
After leaving the Demon Locking Tower, he returned to his cave and carefully sorted out his recent experiences and the information revealed by the old man in the Demon Locking Tower.
"Understanding the demon-revealing tower formation..." Ye Feng touched his chin and began to screen suspicious candidates in his mind.
The power structure of Tianji Sect is not particularly complicated. There are several elders under the sect leader.
It seems that Elder He of the Law Enforcement Hall has a lot of research on sect formations...
Among the core disciples, there are also some people with deep backgrounds or top strengths who have a certain say.
So Ye Feng first started investigating from the dozen or so core disciples under Elder He...
A month later.
The name Liu Haoran entered Ye Feng's field of vision.
This person is the same core disciple as him, and his cultivation level is also at the fifth level of Jindan. He has no contact with Ye Feng on weekdays, and can even be said to be somewhat alienated.
He discovered that Liu Haoran had been in frequent contact with several outer disciples who behaved mysteriously recently, and some weak shielding formations were set up around Liu Haoran's cave. If Ye Feng's spiritual consciousness was not far above the same level, it would be difficult to detect it.
"It seems that he did something bad and was afraid of being discovered." Ye Feng sneered in his heart.
That evening, Ye Feng came to the vicinity of Liu Haoran’s cave. He sensed that there seemed to be a slight fluctuation in the shielding formation in the cave, and someone had just entered and exited.
He did not alert the snake, but quietly hid aside and waited patiently.
About a stick of incense, a figure sneaked out of Liu Haoran's cave, looked around, and then hurriedly left.
Ye Feng took a closer look and saw that the person was one of the outer disciples who had been in contact with Liu Haoran a few days ago.
"There is indeed something fishy."
Ye Feng did not go after the outer disciple, his target was Liu Haoran.
He quietly sneaked outside Liu Haoran's cave, and carefully probed in with his spiritual consciousness.
In the cave, Liu Haoran was facing the entrance of the cave, seeming to be fiddling with something.
In front of him, an opened secret compartment was revealed. In the secret compartment, there were several dark tokens and some jade slips recording cipher text.
On those tokens, there was a strange totem that Ye Feng had never seen before, exuding a cold and evil aura.
The contents of one of the jade slips happened to be spread out on the table by Liu Haoran.
Ye Feng’s consciousness swept over and his pupils suddenly shrank!