To be precise, it is continuously and slowly extracting the spiritual power of every monk who is active in the mountain guarding formation in a very small proportion, and then gathering it into a fixed storage point.
Lin Feng put the array diagram together, found the coordinates of the storage point, and confirmed the location by comparing it with the college's floor plan:
Back mountain, underground of Sutra Pavilion, third floor.
Then he went to check to see what level of people had permission to enter the third basement floor of the Sutra Pavilion.
The answer is only three people: the dean and two vice-deans.
Yun Chengwang has been running outside these days, and his activities have been recorded. Lin Feng checked it again, and there is no problem.
Among the two vice-presidents, one is named Song Bai, with the cultivation level Early God Emperor Stage. He has served in the college for nearly 800 years. According to all aspects of evaluation, he is positive. He keeps a low profile and rarely shows up.
Lin Feng compared Song Bai's usual range of activities with the modified sub-array layout timeline.
There are three overlaps on the timeline.
Lin Feng called a disciple who was familiar with the formation, re-deduced the true function of that sub-formation, asked him to confirm it, and then repeated the conclusion to Yun Chengwang in the most concise way:
"One of you has tampered with the mountain protection formation and secretly drained the spiritual power of everyone in the academy. He has accumulated a considerable amount." He paused, "This amount is enough to the Blood Demon Sect open a Devil World channel."
Yun Chengwang's face changed, a very ugly change.
It's not a shock, but a change mixed with anger and some kind of deep chill.
"Song Bai," Lin Feng said the name directly, "I did an investigation and he is the most suspicious."
Yun Chengwang was silent for about three seconds, and then said:
"He is at the back mountain formation tonight. I have arranged routine maintenance of the formation, and he is the only one there."
"Okay," Lin Feng said, "Then now."
The back mountain formation platform is the central control node of the mountain protection formation. It is a semi-open-air stone platform with formation plates in six directions. The center is the main control console. The monks stand in front of the main control console and can adjust and maintain the entire mountain protection formation.
Song Bai is standing in front of the main console, making adjustments, his movements are skillful, his expression is calm, and nothing unusual can be seen. If you don't know the background, he is a conscientious vice-dean who routinely maintains the formation at night.
Lin Feng glanced at his adjustment operation from ten steps away. The content of the adjustment was to trigger the release of the storage point.
In other words, tonight, he is ready to take action.
Song Bai noticed someone approaching. He raised his head and saw Lin Feng. He was stunned for a moment and quickly regained his composure with a polite tone:
"Professor Lin, non-related personnel are not allowed to enter the Houshan Formation Station. You come here--"
"I came here to turn off a switch," Lin Feng walked up to the array platform, stood next to the main console, lowered his head, and looked at the dense array control area, "Do you mind if I take a look?"
Song Bai's hand moved very slightly towards the formation plate.
Lin Feng has put his hand on the edge of the main console.
He is not a cultivator of formations, but the underlying logic of cultivating immortals is the same. When Rule Analysis is opened, the entire operational framework of the mountain guarding formation unfolds in his field of vision, like a huge, three-dimensional network. Each line represents a spiritual path, and each node represents a sub-array.
He quickly found the modified sub-array, found its connected control interface, and found the corresponding control node on the main console--
Then, he did not directly turn off the sub-array.
He rewired the input and output interface of that sub-array.
Song Bai felt something abnormal, and something had changed below the formation. He immediately rushed towards the main console. At the same time, Early God Emperor Stage's spiritual power exploded. He pushed forward with his right hand, and a solemn spiritual palm print hit the front of Lin Feng--
Lin Feng turned sideways, let the palm print pass by, and pressed the newly connected control node at the same time.
Buzz--!!
The entire back mountain array roared.
The sub-array that was supposed to release the stored spiritual power outwards and provide blood sacrifice energy for the Blood Demon Sect channel had its output direction completely reversed, no longer outward, but inward - inputting into the area covered by the defensive spiritual shield on Song Bai himself.
The spiritual power in that storage point was quietly switched by Lin Feng during the wiring process - from a peaceful accumulation state to a high-voltage activation state. The original thunder branch array of the mountain guard array was used as the source of stimulation to release the accumulated spiritual power in a targeted manner in the form of lightning strikes.
Song Bai's defensive shield was arranged by himself. It is optimized for external attacks and has a natural blind spot for defense in his own direction--
All defense systems have this blind spot, and no one will defend themselves.
"Boom--!!!!"
Lightning strikes poured up from the formation platform at his feet. The spiritual shield on Song Bai's body flashed three times and shattered under the first impact of the current.
The second impact, keep up.
The third way.
On the array platform, white light covered all the details, lasting for about three seconds, and then dissipated.
Song Bai was lying on the platform, motionless. The clothes on his body were burnt black in many places. The most expensive robe turned into black lace-like fragments and clung to his body. His hair was messy and his skin had a slight burnt texture, but it was not life-threatening - after all, Early God Emperor Stage was not made of paper. Being seriously injured by this amount of lightning strikes was already the limit.
There was a burnt smell in the air.
Yun Chengwang stood outside the formation, witnessed the whole process, and finally said:
"You electrocuted him into coke."
"Not dead." Lin Feng restored the control interface on the main console to its original wiring, and completely shut down the modified sub-array. "This kind of person deserves to die, but he died too quickly. Blood Demon Sect still has many connectors that he hasn't checked yet, so they can be kept useful."
He glanced at the lying Song Bai, and there was no extra emotion in his tone, as if he had dealt with a slightly troublesome matter that had to be dealt with:
"Lock him up and wait until he's done asking questions."
He walked down from the platform, looked at the unaffected cuffs at hand, straightened them, turned around and walked towards the lecture hall:
"I haven't finished preparing for tomorrow's class yet, so I'll go back first."
Yun Chengwang stood there, watching him leave, then turned to look at the charred deputy dean on the stage, swallowed his words, and finally said to the deacon next to him:
"Carry it down, treat it, keep it under control, and don't allow it to die."
After a while, he raised his head and looked at the night sky.
Heavenly Dao Academy has been built for four thousand years. Before this year, he thought he had seen enough people and things.
After today, he felt that he needed to recalibrate the standard of "enough".
He lowered his head, sighed, and walked back.
After taking two steps, the elder next to him came over and asked in a low voice:
"Dean, how long has that sub-array been modified..."
"Three hundred years," Yun Chengwang said in a very calm tone, "Song Bai has been the vice president of the college for eight hundred years. The last three hundred years have been spent working for the Blood Demon Sect."
He stopped and glanced at the elder:
"If it wasn't for Lin Feng, I don't know how long it would have taken for this to be discovered."
The elder didn't speak, and the two of them walked back in silence.
On the formation platform, Night Wind blew by, and the burnt atmosphere slowly dissipated, and the starlight shone down again, illuminating those ancient formation plates and every formation engraved line, calm and silent, as if nothing had happened.