The two blue jade stone platforms are the same as the main hall, sitting in the north and facing south.

Xiao Nan stretched out his hand and pressed it on the blue jade stone platform in the east, and the Wu Yuan in his body was revealed and entered the body of the stone platform.

The countertop is cool to the touch, and the inside contains a chill.

The cold qi was stimulated by Wu Yuan, and immediately erupted, condensing a mist on the blue jade stone platform.

He took back Wu Yuan and touched it on the countertop, which was warm and slippery.

"The Hidden Spirit Array is covered by the technique of Yin and Yang, and there must be two formation bases, one Yin and one Yang. This stone platform is cold, but it is the yin base. ”

Xiao Nan looked at the other stone platform thoughtfully, he moved forward, stretched out his hand and put it on the table, revealing Wu Yuan.

There is indeed a fiery mass in this stone platform.

The hot air is stimulated by Wu Yuan, gushing out, and sticking with the moisture at the bottom of the lake, there is a sense of stickiness.

"This stone platform is the yang base, echoing with the yin base, covering the spiritual opportunity here. ”

He affirmed the conjecture in his heart, and his eyes turned to the True Dragon Throne in the middle.

"If it is not bad, the target of this hidden spirit array is this throne. But what's so special about it?"

Xiao Nan remembered the scene when the two glazed eyes were destroyed, and a dazzling beam of light shot out from the throne.

I'm afraid the secret is hidden in this throne.

He looked around and couldn't see any clues.

"Although this Hidden Spirit Array is ranked among the Third Rank Witch Array, it is nothing to the true master of the Dragon Palace. ”

He looked around and had some thoughts in his mind.

"According to my speculation, this Hidden Spirit Array should have been planted by the evil Jiao who later occupied the palace. What is its relationship with the true owner of the Dragon Palace, and what kind of mystery is it covering?"

His gaze couldn't help but fall on the mural, on the mysterious figure in the dragon's head mask.

If you don't guess wrong, this person is under the throne of Xian Haoxing, one of the four god generals, the Oriental Green Dragon God General - Himeno!

"Where's the secret?"

Xiao Nan took out a night pearl, illuminated the throne, and inspected it inch by inch along the back of the chair.

The back of the throne chair is carved with simple patterns, like the scales on the body of a real dragon, section by section, containing inexplicable rules.

"No, what is this?"

He suddenly lowered his head and brought the Night Pearl close to the bottom of the throne and shone it on the tail of the true dragon.

A small hole is sunken in the tail, like a constricted chrysanthemum, half-opened.

Xiao Nan only felt familiar, he thought for a moment, and couldn't help but light up in his eyes, thinking of something.

"Could it be...... This is the keyhole of the dragon key?"

He pulled out a small dragon-shaped key from the storage bag, which was just right compared to the small hole in the tail of the real dragon.

"Hope it works. I'd like to see what you're trying to hide."

Xiao Nan aimed the dragon-shaped key at the small hole, rubbed it twice, and inserted it gently.

As the root of the key reached the inner core, it slowly turned, and suddenly a soft sound sounded.

The sound of "pop, click, click" came out, and the long carpet on the palace floor was dented and drooped downward.

Soon, a dark staircase descending from the ground appeared.

"Sure enough!" Xiao Nan happily glanced at the dragon-shaped key in the throne, walked to the front, and looked into the stairs.

The light of the Night Pearl couldn't shine too far, and with Wu Yuan's blessed eyes, he could only see what seemed to be a secret room below.

The location of this chamber is directly opposite the True Dragon Throne.

If you sit on the throne, you are like an emperor looking down on the courtiers below.

"If you come, you will be safe. ”

Xiao Nan faced the dark and unknown staircase secret room, his heart was slightly nervous, and he couldn't help but comfort himself.

"It's a big deal to lose a shell. ”

He secretly sentenced Venerable Suzaku to death in his heart, and this body would be killed by himself sooner or later.

However, Himeno, one of the four gods, has a way to reach the sky, and he may not leave a secret hand and can wipe out the Jiao Soul.

His mind was racing, holding the Night Pearl, staring at the dead fish's eyes, and slowly walking down the stairs.

The soft light dispelled the darkness and warmed his heart.

As he walked down, a faint glow lit up in the chamber. A vague figure loomed in the three walls, holding a glowing source in his hand.

"Who?"

Xiao Nan suddenly raised his heart to his throat, the secret room of the Dragon Palace at the bottom of the lake has not seen the light of day all year round, how can there be people inside?

A long sword instantly appeared in his hand, pointing at the swaying figure in front of him.

The figures in the wall noticed it and drew their swords together.

But...... Strangely, why did the people in the left and right walls also point their swords at the figures in front of them?

Xiao Nan raised the Night Pearl, and the figure in the wall also raised the light source in his hand.

"It turned out to be a mirror!

He let out a long breath, retracted his winged sword, and held out a bronze oil lamp.

The dim light suddenly illuminated the entire chamber, revealing three smooth walls.

If you count the obscured side behind the staircase, there are four walls.

The secret room was empty, with no things or furnishings, as if it had been ransacked, and it was very shabby.

Only under the wall in front of the staircase was a rectangular stone table, with a few pieces of rubble scattered around the table.

"Covered by the Hidden Spirit Array, I thought there was some treasure. Xiao Nan shook his head in disappointment and smiled.

He walked over to the stone table and reached out to inspect the rubble on it, with one last trace of treasure hunting.

However, these gravel materials are ordinary, there is no aura inside, and there is nothing special about them.

The shattered stone swayed and struck a few notches, and there was no correlation to be seen.

"Not true. Xiao Nan suddenly picked up a piece of gravel and looked at it carefully, "These gravel ...... It seems to have been a piece!"

He fiddled around with the stone table for a moment, picking out a piece of rubble from it and butting it with the one in his hand.

The fractures of the two coincide perfectly and can be put together.

"If you put all this rubble together, what would it look like?"

Curious, he took out a bamboo stool from his storage bag and sat down at the stone table, ready to do a big job.

"There are seventeen gravels on this table, and it's not that difficult. He lined up the rubble and laughed, "They seem to have been broken by hand, I don't know who did it." ”

Xiao Nan has the ability to never forget, and he is clever. Gravel alone naturally couldn't bother him.

In a few moments, he had put sixteen pieces of gravel into place, leaving only the last one.

He pulled the bronze oil lamp closer, ready to take a closer look. He then plucked the last piece of gravel and embedded it in the missing edge.

The scattered rubble was now immediately restored to a single stone the size of a faceplate.

At the moment when the gravel was put together, a cold breath came to the surface.

The light of the bronze oil lamp swayed lightly twice, as if it were substantial, dispelling the cold breath.

Xiao Nan was stunned for a moment, and seemed to hear the terrible cry of the dragon coming from the cold breath.

"It's really ghostly. He shook his head, thinking that he had just fought against the Jiaolong Yuan Soul on the back door, leaving an illusion.

On the stones, the notches are connected end to end, intersecting and combined, forming a sentence written in the character of the beast rune.

It reads:

"Don't ...... Close to the underground ...... Dangerous. ”