Seeing the blue light emanating from his palm, Shen Yunhao spotted a direction and swung his sword in a slash.

Several clusters of ice crystals shattered with a sound, revealing a transparent ice wall.

Through the ice wall, Shen Yunhao could see a blue crystal tunnel extending downwards...

"A secret passage? There's a secret passage behind this?"

Mo Yan, who was standing to the side, was stunned for a moment. After hesitating for a long time, she snatched the Gui Xue sword from Shen Yunhao's hand and slashed out fiercely.

A terrifying sword aura, visible to the naked eye, struck the transparent ice wall, but after the booming sound, not even a scratch was left.

"It won't open here, let's go!"

The Returning Snow Sword, imbued with the spirit of Frost Silence, possessed terrifying strength; even Mo Yan couldn't cleave through the ice wall. This indicated that the two of them truly had no other options.

A hint of regret appeared on Shen Yunhao's face as he slowly walked forward and patted the ice wall.

"Unfortunately, I have a feeling there's something good behind this. If only I could get it... eh?"

Before he finished speaking, the part of the ice wall that his right hand had touched melted, creating a small hole.

Shen Yunhao blinked, seemingly understanding something. With a thought, the runes in his palm suddenly emitted a bright blue light.

The ice wall melted the next second, and the entrance to the tunnel was exposed directly in front of the two of them.

Mo Yan: "..."

Seeing this, Shen Yunhao couldn't help but exclaim, "Wow! The authority of this Frost Rune is quite extensive, it has even extended to the Frost Marrow Secret Realm!"

However, just as the two were about to go in and investigate, another earthquake shook the ground in the distance.

Mo Yan frowned instantly and said in a deep voice, "Not good! The Ice Crystal King Beast is back!"

"So fast?" Shen Yunhao was also greatly surprised. "It actually took care of the other side so quickly?"

Mo Yan shook her head. "The Ice Crystal King Beast is incredibly powerful; it's impossible for it to be defeated so quickly. They must have stopped fighting halfway through!"

"Could it be?"

The two exchanged a glance and then looked at the tunnel in front of them.

"There's no time! We must get through before the King Beast returns, otherwise, given our current position, once it comes back, we'll have nowhere to retreat and will be completely forced to our deaths here!"

Shen Yunhao naturally knew the priorities and abandoned the tunnel without hesitation, running towards the outside of the Crystal Beast's Nest in the north.

However, after running only a few steps, he abruptly stopped.

Right in front of them, the crystal beasts that had just scattered and fled because of the Crystal King Beast's anger seemed to sense something and suddenly turned around and charged toward Shen Yunhao's location.

Even Mo Yan turned pale upon seeing this scene.

"There are too many! It's impossible to deal with them!"

"There's only one road left! Let's go!"

At this moment, Shen Yunhao remained remarkably calm. He grabbed Mo Yan, turned around, and plunged into the tunnel.

At the same time, blue light flickered in his palm, sealing the transparent ice wall once again.

"Hopefully this thing can hold off those ice crystal beasts!"

Having done all this, Shen Yunhao no longer hesitated and ran deeper into the cave!

"roar!"

Unbeknownst to Shen Yunhao, the moment the ice wall sealed, all the crystal beasts froze, showing a faint look of bewilderment, before scattering as if nothing had happened!

Inside the tunnel, the stairs were longer than expected, and the surrounding ice walls gradually changed from light blue to dark blue. The runes in Shen Yunhao's palm kept glowing faintly, serving as both illumination and warning.

"Don't you feel..." Mo Yan suddenly spoke, her voice tinged with uncharacteristic hesitation, "...that we seem to be going downhill?"

Shen Yunhao nodded: "It gets colder the deeper you go..."

Deep inside the tunnel, the cold air condensed into tiny ice crystals that floated in the air, twinkling like stars under the faint light of the runes.

Because he didn't know what was ahead, Shen Yunhao took each step with extreme caution.

"Wait!" Mo Yan suddenly reached out and stopped Shen Yunhao, her deep pupils fixed on the seemingly ordinary ice wall in front of her. "Be careful, there are fluctuations of spiritual energy ahead."

Shen Yunhao examined it closely but found nothing amiss, so he reached into his robes and took out the fox tail.

After activating True Sight, I indeed saw runes flowing on the ice wall, and a net woven from blue light slowly appeared in the air.

"It seems to be some kind of binding formation..." Shen Yunhao observed the direction of the light. "It's not complicated, but it's very well hidden. Just use spiritual energy to impact these three locations..."

He then pointed with his finger.

Mo Yan understood, gathered a wisp of spiritual power at her fingertips, and precisely landed it on three nodes of the net-like structure. The light flickered a few times and then disappeared without a trace, and a crack appeared in the ice wall.

"Let's go..."

Continuing onward, they encountered two more similar spirit arrays.

One place has a mesmerizing array on the icicles at the corner, while the other has a harmful ice spike array hidden on the ground beneath your feet.

With his previous experience, Shen Yunhao became increasingly adept at cracking the code.

After the fifth spirit array was deciphered, the tunnel suddenly opened up, revealing a small ice chamber about ten feet square.

A jade scroll emitting a blue light floats in the center of the ice chamber, and several humanoid skeletons formed from ice crystals are scattered on the stone platform below.

"Were these people frozen into ice crystals after they died...?"

Shen Yunhao sighed and was about to step forward when Mo Yan grabbed him!

"Watch out!"

As he spoke, several vines emerged from his sleeves and gently touched the space around the jade slip.

"Whoosh!"

A blue arc of electricity flashed, and the wisteria was instantly frozen into ice crystals!

"Holy crap!" Shen Yunhao exclaimed in disbelief.

Mo Yan decisively severed the crystallized part, her expression changing slightly: "What a domineering restriction."

Shen Yunhao was also terrified upon hearing this.

Having broken through those restrictions too easily before, they've become complacent now that the spoils are right in front of them!

If it weren't for the wisteria's reminder, I probably would have become part of the icy skeleton beneath that stone platform.

Shen Yunhao observed for a moment, then frowned: "This spirit array is quite terrifying; I'm afraid I can't break it on my own... However, it seems there's another way..."

After speaking, Shen Yunhao raised his right hand, and the runes in his palm lit up again.

After a while, a beam of blue light suddenly shone down from the top of the ice chamber, enveloping the jade slip on the stone platform. Then, the jade slip slowly unfolded, revealing dense ancient characters and diagrams of human meridians in the air.

"The Crystallization Spell?" Shen Yunhao read it for a while. "It transforms spiritual power into crystallization power... It can strengthen one's own defense and also be used to subdue enemies... Sounds very powerful!"

Mo Yan leaned over and looked at it for a while, then nodded with a rare seriousness: "This spell is of a very high grade. You should memorize it quickly, as it will be very useful once you master it after you condense your soul!"

Shen Yunhao nodded, memorizing the contents of the jade slip.

After a while, the jade slip suddenly disappeared and floated back to its original position, just as it had when it first arrived.

"It seems... I'm not the only one who can learn this spell... If others can collect blue crystals to condense ice runes later, they can also observe this crystallization spell!"