One person: I am Lin Bai, good at using a hundred skills!

"It seems that this is the entrance to the next secret realm."

Lao Xiao's voice echoed in the narrow space with a hint of echo.

"Walk!"

Lin Bai nodded and stepped forward.

The two men wound their way through the dark tunnel, and the road was winding and rugged.

However, after walking for an unknown amount of time, the scene in front of me suddenly changed.

The originally narrow corridor suddenly opened up, and a magnificent underground palace suddenly appeared before their eyes!

"Oh My God!"

Lin Bai screamed subconsciously, and even Lao Xiao widened his eyes, shocked by the scene before him and speechless.

But the walls of the hall were all made of obsidian, shining faintly under the light of torches.

The surfaces of the stone walls are finely carved and engraved with mysterious inscriptions and patterns.

Every stroke seems to contain the ultimate truth of heaven and earth, yet is as mysterious as a veil.

The most breathtaking thing is the dome that soars into the clouds.

Looking up, I could not see the top, but only felt that the sky and the earth were far away and boundless.

What is even more amazing is that those huge bricks are not pieced together randomly...

I saw countless gems of all sizes inlaid on the top, shining brightly and shining like stars.

They outline the shapes of the twenty-eight constellations.

Against the backdrop of the dome, the stars are sometimes dim and sometimes bright, as if narrating the eternal and unchanging laws of nature.

Lin Bai and Lao Xiao stood silently in the center of the hall, letting their eyes wander across the vast starry sky.

After a long while, the two came back to their senses and continued to look at the other furnishings in the hall.

However, what attracted their attention was a huge Bagua formation.

In the middle of the hall, there was a huge Bagua diagram engraved on the bronze ground.

There is a huge bronze tripod in each of the eight directions, some round and some square, with mysterious patterns.

From time to time, wisps of green smoke rose from the tripod, swirling around with no end in sight.

"Is this the legendary Tiangang Orthodox Formation..."

Old Xiao muttered to himself.

He took a few steps forward and stretched out his hand to make a vague gesture a few inches away from the bronze tripod.

A tingling sensation instantly came from the fingertips, as if an extremely mysterious force field was surging in the dark.

Lin Bai also noticed something unusual.

He frowned slightly and walked towards the Bagua formation.

However, just after taking one step, he felt his blood surging and his mind buzzing.

It was as if an invisible energy was filling my whole body, and I felt as if I was in a huge whirlpool that could be swallowed up at any time.

"Wait a minute!"

Old Xiao hurriedly grabbed Lin Bai's arm, and his expression became a little solemn.

“Do you feel it?”

"The energy contained in this formation is extremely powerful. Even for someone with deep inner energy, it would be difficult to resist if they enter rashly."

"It seems that this should be the test for our level."

"The Bagua formation has always been ever-changing, and it's not easy to pass through."

"What's more, the energy fluctuations here are so strange... there must be something strange."

Lin Bai slowly retracted his steps, his eyes flashing...

The two looked at each other, their eyes full of solemnity.

If you are not careful, your life may be in danger.

"Whatever, I'm here now."

Lin Bai grinned...

Old Xiao smiled bitterly and shook his head.

As soon as he finished speaking, two figures, one in front and one behind, jumped into the Bagua formation together.

As soon as he stepped into the range of the Bagua Formation, Lin Bai felt an inexplicable pressure coming towards him.

The air around seemed to be stagnant, and every breath became extremely difficult.

What was even more strange was that the flickering candlelight was extinguished in an instant, and the entire hall was suddenly plunged into darkness.

Only the blue smoke was curling up from the bronze tripod, emitting a faint light.

"careful."

Lao Xiao reminded in a low voice with a serious tone.

"The changes in this formation are far more complicated than imagined. We must not take it lightly."

Lin Bai nodded, his eyes sweeping over every inch of the Bagua Formation.

The true energy in the body has been raised to an unprecedented level, ready to deal with possible emergencies at any time.

The two of them moved forward slowly in the Bagua formation, walking on thin ice.

However, as one continues to go deeper into the core of the formation, the power of the formation becomes increasingly bizarre and unpredictable.

First, the ground began to shake violently, and wave after wave of tremors came from under the feet, like a mountain shaking and the earth trembling.

Then, a blinding light suddenly lit up, enveloping the two of them.

"Ah!" Lin Bai felt a sharp pain in his eyes and quickly used his internal energy to resist.

But the vibration just now made him stagger and almost fall.

Old Xiao was shocked when he saw this and subconsciously reached out to help.

However, at the moment when the fingertips touched Lin Bai, a huge force suddenly burst out, and he was actually bounced away!

With a dull thud, Lao Xiao fell heavily to the ground, splashing up a large amount of dust.

He felt as if all the bones in his body were about to fall apart, and even breathing became difficult.

"Old Xiao!" Seeing this, Lin Bai didn't care about the severe pain in his eyes and rushed to the old man.

But as soon as he took a step, he seemed to hit an invisible wall.

Lin Bai was startled, thinking to himself that something was wrong. He stared at Lao Xiao's position and began to feel around.

However, no matter how hard he tried, he could never get even a little bit closer.

At the same time, the strange phenomena within the Bagua formation became more and more intense.

The originally lingering green smoke suddenly billowed up, carrying with it a fishy and sweet smell that covered the sky and the earth.

The ground began to shake and crack, and cracks spread out like a spider web.

There was a loud bang, and the entire hall was shaking under the impact.

The eight bronze tripods exploded and turned into fragments all over the sky. The copper chips flew like rain, forcing Lin Bai and Lao Xiao to retreat again and again.

"Oh no, this formation can actually turn external forces into its own use!"

Lin Bai's face changed drastically, and he stopped immediately. He took a deep breath.

The Tiangang Bagua has a myriad of changes. The series of strange visions just now were clearly testing the cultivator's ability to respond.

If you panic and just attack blindly, you will be in danger immediately.

But how to solve the current dilemma? Lin Bai felt a little confused.

Lin Bai stood there silently, letting the strong wind rage around him. The scorching air rushed towards him, almost swallowing him up.

However, at this moment, he seemed to have been out of touch with everything, completely immersed in his own thoughts.

"Tian Gang Zheng Dao, Bagua Formation..."

Lin Bai murmured to himself.

As the founder of the Feng Shui school, the formations that Yuan Tiangang arranged must contain some kind of original idea.

The key to the Bagua Formation is probably related to this.

A vague thought emerged in Lin Bai's mind.

Suddenly, Lin Bai's pupils shrank.

In this Bagua formation raging in the wind, faint golden runes appeared.

They are sometimes clear, sometimes blurry, looming in the green smoke, mysterious and unpredictable.

Lin Bai's eyes lit up...

In an instant, a warm current rose from Dantian and flowed through the limbs and bones.

Haha! Profit!

Gradually, these runes formed a heavenly book, the Tiangang Heart Sutra!