The scorching heat came head-on, and fine beads of sweat appeared on Su Xiao’s face. Even Su Xiao was like this, and Killua, who was caught in his hand, was even more drenched as if he had been washed with water.

Maha was not much better off, his old face full of sweat. Somewhat unexpectedly, Yaluga, the weakest in constitution, showed no reaction, not a drop of sweat on his face, but he started dozing off after entering Kukuru Mountain.

Sitting on top of A Mu, Bubu Wang was obviously bewildered by the heat. If cold weather could unlock Bubu Wang’s intelligence, then the heat was a ’seal’.

This guy lay sprawled on A Mu’s head, tongue out, eyes rolling back, looking like he was about to pass away.

The ash gradually filled the air above the Lava Lake, and sweat dripped from Su Xiao’s chin, evaporating with a sizzle as it hit the porous rock beneath his feet.

Maha threw a metal tube into the Lava Lake for the eleventh time, and this time it didn’t turn red.

"Almost there. Remember, the crystal layer is on the left rock wall, about 16 meters from your current position..."

Just as Maha finished speaking, he jumped into the Lava Lake.

With a splash, Maha only got halfway submerged in the lava. As the temperature significantly dropped, the lava had turned from liquid to semi-solid, like a swamp.

Encased in black Nen, Maha and Yaluga sank into the lava.

The surrounding ash was getting very close to Su Xiao. He pushed his palm forward, forming several not-so-strong energy shields, which he pieced together into a rectangular shape and tied the Boundary Line to it.

Disconnecting from the energy shields, Su Xiao kicked the rectangular energy shield, sending it flying toward Bubu Wang and A Mu. They weren’t afraid of the current Lava Lake temperature; this was to prevent them from getting separated.

After doing all this, Su Xiao leaped into the lava pool without hesitation, his hand gripping Killua, who was slightly turning green.

Did the little assassin Killua get scared? Not at all; the greenish hue was from Su Xiao gripping the nape of his neck tightly.

With a plop, Su Xiao’s legs were the first to touch the lava, feeling slightly scorching, similar to being in a half-hot spring.

The Lava Lake at this moment was no different from a swamp, and Su Xiao gradually sank into it, a few low-strength energy shields encasing Killua in his hand.

Su Xiao had received four Soul Crystals (Large), so he certainly wouldn’t ignore Killua’s life; this was the basic trust in cooperation.

Immersed in the lava pool, Su Xiao’s vision, touch, and even all senses were lost, but fortunately, he had intuition ability.

The spot where Su Xiao jumped was very close to the crystal layer Maha mentioned. Through his intuition ability, he sensed that Maha was just 2 meters away from him, but due to the semi-solid lava isolation, he couldn’t see Maha.

An energy shield appeared under Su Xiao’s feet; he immediately severed the connection with it and pushed hard against it, propelling his body forward quickly.

Bang.

Su Xiao collided with something - the crystal layer Maha spoke of.

At this moment, Su Xiao and Maha were 8 meters deep in the Lava Lake. Going 2 meters deeper would restore the lava’s temperature to normal, which would definitely not be a pleasant experience.

Diving 8 meters into a lava lake seemed like a crazy act, but Su Xiao did it anyway. Without this boldness, he would never have become as strong as he is today.

The interior of Kukuru Mountain was definitely a wonder. Never mind the terrifyingly hot ash; just the 200°C yet not solidified lava was an extremely rare sight.

A surge of Nen energy spread from the low-temperature lava - it was Maha’s Black Thought, a signal.

Su Xiao drew the Dragon Slash from his waist.

Clang, clang...

The Blade Aura flashed within the low-temperature lava. After slashing over a dozen times, Su Xiao sheathed his blade.

A magma flow appeared beside Su Xiao; it was Maha charging toward the crystal layer.

With a crisp crack, Su Xiao’s body involuntarily moved forward. He pushed hard against the sticky lava with a crunch and surged forward.

Escaping the lava, Su Xiao had no time to observe the surrounding situation; instead, he quickly retracted the Boundary Line.

Whirr～

The Wire Wheel rotated rapidly, and the faint blue rectangular appeared, with A Mu and Bubu Wang squeezed inside.

Su Xiao withdrew the energy shield and released Killua.

"Huff, huff... I thought I was going to die of hypoxia."

"Run deeper."

Maha shouted as he quickly ran into the ’cave’ with Yaluga in his arms.

Su Xiao also darted into the depths of the ’cave.’ Only now did he have time to scrutinize the ’cave’ - it wasn’t a cave but a natural crystal cave formed by fiery red crystals.

Through the fiery red crystals, Su Xiao could see the ash pervading behind the crystals. It wasn’t ordinary ash; it was filled with sparkling sparks inside, conservatively estimated to be more terrifying in temperature than lava.

Crack, crack, crack...

As Su Xiao dashed forward, faint crisp sounds came from all around. He looked up to see the light red crystal layer gradually cracking, a chain reaction caused by Su Xiao and Maha shattering the crystal layer at the entrance. 𝑓𝑟ℯ𝘦𝓌𝘦𝘣𝑛𝑜𝓋𝑒𝓁.𝑐ℴ𝓂

If this crystal cave completely shattered, the ultra-high temperature ash would envelop them, and if that happened, everyone, including Su Xiao and Maha, would perish.

Crack!

A crisp sound came from behind. Su Xiao turned around to see a large section of the crystal cave breaking apart.

Upon seeing this, Su Xiao instinctively scooped up the running Killua, still in that familiar spot.

"Bubu, A Mu, chariot."

The muscles in Su Xiao’s legs slightly bulged, and his forward speed suddenly increased.

Bubu flinched subconsciously upon hearing the keyword ’chariot’.

"Woof, howl～, woof woof..."

Bubu Wang was in a frenzy. The tactical combination it feared most was the ’chariot.’

For A Mu, Su Xiao’s words were the highest command. It immediately activated the Fearless Charge Ability, and its speed also suddenly increased.

A Mu extended its rough large hands, grabbing the running Bubu Wang.

"Howl!!"

Bubu Wang let out a ’wailing,’ as A Mu’s running arms suddenly thickened by an inch, veins bulging, and it lifted Bubu Wang over its head, tossing it forward with all its might.

Whoosh～

Bubu Wang flew forward like a missile, instantly overtaking Su Xiao and even surpassing Maha ahead. Even with Maha’s steadiness, his mouth hung slightly open.

Bubu Wang sped forward low, the wind blowing its lips to make a purring sound, saliva spraying wildly while its ears flapped.

Even more magically, Bubu Wang’s taut tail adjusted direction now and then, changing flight angles - the sensation of flying.

At this moment, Bubu Wang resembled a cannonball, no, more like an arrow.

Su Xiao now had no time for other thoughts. His only idea was to charge forward.

Boom, boom, boom...

With A Mu’s heavy footsteps, the crystal cave behind it cracked inch by inch, the ash ridden with sparks just 5 meters behind.

After a dozen seconds of mad sprinting, a corner appeared ahead, and a glaring red light shone from behind the corner.

With a crash, Su Kong Dog Arrow·Bubu Wang landed.

Bubu Wang hit hard, but with 218 experiences of crashing into trees, it deftly avoided collision damage.