Chapter 406: Fengdu City's Defensive Formation

When Fengdu City's underground roads were first built, they were designed to allow for effective underground guerrilla warfare and drag the enemy into street fighting after the city's defenses were breached.

The underground formations are distributed throughout the city, densely packed like ant caves.

Most of the formations were built to maintain the stability of the underground, and a small number were built to ensure air and water circulation to prevent drowning by the enemy.

According to the standards set by the first chief of the Demon Slayer Division, even if the full force of a ninth-level venerable was taken, the defensive formation would not collapse, and it could at least last for more than 30 minutes until rescue arrived.

The defensive formation that was enough to withstand the attack of a ninth-level venerable consumed a huge amount of energy.

If it was opened every day, it would be unaffordable.

So the first chief came up with a way to gather all the energy in the core of the formation, and through his clever techniques, formed a self-circulating system to ensure that the energy would not be lost over time.

On weekdays, the consumption of the magic array can be almost ignored, but once it is opened, the terrifying energy accumulated over two hundred years will instantly cover the entire city.

Gui Ji led Tu Lei and Yuni to shuttle back and forth in the underground passage, and slowly moved towards the core area of ​​the formation according to the method taught by Lin Yuan.

"According to you, the power of detonating the defense magic array is enough to flatten the entire Fengdu City?" Tu Lei said excitedly.

He is very familiar with the underground passage of Fengdu City. Even without Gui Ji's guidance, he can find the core of the formation.

However, it is full of formation restrictions left by the first generation. If you are not careful, you will be beheaded.

Only the chief of the Demon Slayer Department knows how to pass safely in this world.

"In the past two hundred years, we have consumed a huge amount of crystal cores in the underground magic circle, especially after Lin Yuan took over, the amount has almost doubled every year."

"He has been preparing for this day for many, many years."

"The power of the detonation may not only destroy Fengdu City, but also wipe out Liming City. It may also be a dud, which will end with a big earthquake."

"The actual power will only be known by everyone at the moment of ignition."

"This is also the main reason why I agreed to your plan."

"There is only one chance, I will definitely choose the one with a higher success rate."

Ghost Chicken said, and he had brought the two to a stone door.

He followed Professor Lin Yuan's method, induced the pressure in his body, and penetrated through the gap in the wall to the stone door, and activated the points of the formation one by one with a specific line.

About three or two minutes later, the stone door "clicked" and slowly lifted up.

Behind the door, there was a large glow of fireflies, and an exaggerated magic circle the size of a football field was arranged horizontally in it.

Even though most of the energy was imprisoned in the magic circle, the three of them could still feel the terrifying energy fluctuations like a tidal wave.

Toure passed the ghost chicken, took a few steps forward with some excitement, and stood on the periphery of the magic circle, looking at the dense and complex patterns on the huge magic circle.

The core area of ​​the magic circle is a vortex composed of countless tiny runes. They are arranged in a nearly perfect geometric symmetry and rotate slowly, like a galaxy in the universe, mysterious and vast.

The entire magic circle seems to be a huge living body. Every rune and every pattern is its vein and organ. Together, they form a complete system, emitting an energy fluctuation that transcends the material world.

Standing at the edge of the magic circle, you can clearly see the runes and patterns flowing slowly. They seem to be breathing, like a huge living thing, just falling into a short deep sleep.

Toure's eyes stared at the magic circle, without blinking, and from time to time he made a burst of praise "tsk tsk" sound.

"It's incredible..."

"After two hundred years, the core of the array has not been damaged at all. The first chief has also equipped the array with automatic repair capabilities."

"The energy dissipation rate is probably less than one in a million. How did they do that?"

"No... It's not that there is no dissipation rate, but it is extremely low..."

"The first chief's idea is to completely let go of the flow of energy and let it move freely. Only at a few key turning points, the energy flow is guided to return to the starting point, and the cycle continues."

"No wonder the consumption is so low..."

"The first chief is really a genius!"

"Did you see it? The array is breathing, his heart is beating, he is talking to me..."

"It has spanned two hundred years of time, but it is still so perfect..."

"This is not a defensive array, this is simply a work of art!"

Ture's eyes were full of enthusiasm, and he kept looking around the defensive array, and his words of praise almost never stopped.

As the head of the technical department of Sun City and a master of formations, Toure could feel the power of the defensive formation better than anyone else.

As Toure's words became more and more mysterious, Guiji and Yuni could no longer understand him.

What energy escape?

What conversion and rectification?

What double circulation, or even triple circulation?

Yuni didn't care. She grabbed her skirt and followed Toure lightly. From time to time, she would cooperate and say a few words. The main point was to accompany him.

Guiji was already a little impatient.

How come all these technical people are so easily obsessed? This Tu Lei and Xia Lin are just cut from the same cloth.

As long as they see new gadgets or new technologies that interest them, they will immediately forget everything else, their minds and eyes are full of new gadgets, and they will completely forget what they were originally supposed to do.

He patted Tu Lei's shoulder helplessly, interrupting his self-talk, "I can understand that you are a little excited now, but we don't have so much time to express our feelings to you."

"Tell me, can you make the defense array and the god-making ceremony not conflict with each other?"

"If not, we will withdraw quickly."

"The core area of ​​the defense array cannot be opened for a long time."

"If the demon tribe discovers the energy anomaly and sneaks in, we will be in trouble."

Tu Lei was still immersed in the array and couldn't extricate himself. He pushed away Gui Ji's hand and ran straight forward, muttering, "It doesn't matter, the demon tribe has already known about it."

Gui Ji was startled and his brows were instantly locked.

He looked at Toure's back and asked coldly, "What did you say?"

Another voice responded to Guiji.

"He said, we already knew it."

A cold, resentful, cold, hoarse voice sounded behind Guiji.

Then...

There was a murderous intent!

...