Looking at the dark, endless tunnel, the white tiger actually took out his can of transparent liquid from his arms again.

That's right, it was the white tiger who picked up a stick from somewhere and smeared it on it for something to burn.

"But you don't have a stick anymore?"

Watching the white tiger take out the small jar of transparent liquid from his arms, with the previous experience, Mu Chen naturally knew what the white tiger wanted to do this time, but the white tiger's wooden stick had already been lost when everyone was caught in this pool of water, and there were no other wooden sticks nearby.

Therefore, when he saw the white tiger take out his jar of transparent liquid from his arms, Mu Chen couldn't help but ask him suspiciously.

"Who told you that this thing had to be smeared on a stick? ”

Facing Mu Chen's inquiry, the white tiger smiled unknowingly, and the implication was that the liquid in the white tiger's hand could not only be smeared on the wooden stick.

Just as Mu Chen was still secretly groping for the meaning of Bai Hu's words, Bai Hu tore off a strip of his clothes.

This kind of operation instantly made Mu Chen dumbfounded, and Mu Chen, who didn't know what the white tiger wanted to do, just watched stupidly from the side.

I saw that the white tiger put the piece of clothing he tore off on the ground, and carefully opened the jar of transparent liquid in his hand and evenly smeared it on the piece of clothing he tore.

Immediately afterwards, another fireball formed in the hands of the white tiger, controlling the fireball, and the white tiger also slapped down on the piece of clothing with a fierce palm.

I saw that the piece of clothing instantly burned, emitting a bright flame.

Seeing this all the time, Mu Chen understood the White Tiger's intentions, but he didn't expect that this thing that was smeared by a mysterious small jar of liquid in the White Tiger's hand could burn and glow like the original wooden stick, and it would not consume its own materials.

It's just that...... Although Mu Chen was very shocked in his heart now, he still had a question in his heart—that is, the white tiger had burned all the pieces of clothing that he had torn off, but how to pick up this piece of clothing? There were still no objects around that could provoke things.

But

The next behavior of the white tiger made Mu Chen even more shocked.

Because just as Mu Chen was still thinking hard about how to pick up this mass of burning clothes.

But when he saw the white tiger, he directly picked up the burning clothes with his bare hands, wrapped it around his hands, and let the flames attached to the clothes burn his palms, but he didn't see the slightest pain on his face.

Looking at Mu Chen, who was surprised, the white tiger also slowly waved the burning clothes in his hand and said, "This is specially made for me by the strong man of our beast clan's Tribulation Period, we call him 'fire liquid', everything that is smeared with this small jar of liquid can be ignited, and the flames released by these objects have no temperature, only light."

It's magical!"

Speaking of this, Bai Hu couldn't help but have a proud smile on his face.

After listening to the White Tiger's explanation, Mu Chen and Song Qi couldn't help but be secretly surprised, many of the secret methods of this beast race were indeed far from being comparable to those of the human race, and it was no wonder why the beast race was able to occupy such a harsh area as the Extreme North Continent alone, and still live a good life and cultivate quickly.

However, after the white tiger explained to Mu Chen, he turned around and walked straight towards the tunnel, not paying much attention to what Mu Chen was thinking.

And Mu Chen and Song Qi also hurriedly moved and followed behind the white tiger.

Walking into the cave, Mu Chen has also been closely observing everything around him to avoid any accidents again, otherwise, the three of them may not be able to find the intersection to get out at that time.

If that's the case, it will be more than worth the loss.

In order to better protect against those possible accidents, Song Qi also released a spell and summoned a spirit chain, connecting the three of them, connecting the consciousness of the three of them.

In this way, the three of them walked all the way, constantly observing the surroundings, and gradually walked towards the depths of the tunnel.

As the three of them went deeper, a strange wind also whistled towards the three of them, and it was so cold that it was bone-chilling.

Around, the cracks in the stone walls were also covered with dense and opaque moss, just standing in this tunnel, the three of them unconsciously felt a chill down their spines, and they actually had a feeling of wanting to leave this place immediately.

And the three of them walked for dozens of minutes, and the oncoming yin wind began to carry a faint smell of rust.

But......

In the depths of this ocean blue hole, why is there such a strong smell of rust?

Observing the surrounding environment, Mu Chen speculated that the tunnel here had existed for at least tens of thousands of years, and even if there was iron, it would have been decomposed a long time ago, how could there be such a strong smell of rust.

Unless......

The tunnel is made of pieces of metal.

But how could there be metal all around this mossy stone?

With these questions, Mu Chen and the three of them walked down slowly.

However, when Mu Chen didn't find out, in the hands of the white tiger, the flame of the clothing was unabated, but ......

The surrounding illuminated space is gradually decreasing.

It's like ......

There seems to be something in the air that is blocking the spread of light.

Of course, what Mu Chen and the three of them didn't know was that the thick smell of rust that came to their faces was emitted by this substance that hindered the spread of light.

The three of them didn't know how long they walked, and finally, they saw a blue gate in front of them!

Although it was a bit strange for a blue gate to appear in such a place, the three of Mu Chen didn't think much about it at all, and ran straight towards the gate.

Besides, the gate is much better than the moss-filled, damp rocks around it!

Running towards the blue gate, the three of them soon came to the blue gate.

Looking at the blue gate in front of him, Mu Chen also hesitated to step forward and knock on the blue gate, and the blue gate immediately made a heavy metallic sound.

Mu Chen stepped forward again and pushed the blue hard, but the blue gate did not move at all.

"Is the smell of rust coming from this blue gate?"

Looking at the blue gate in front of him, Mu Chen also speculated that its material should be metal, and he actually wanted to come up and smell it again!

"Are you in your head?"

Seeing Mu Chen knocking and knocking on this blue gate, pushing and pushing, and now he still has to come up and don't know what he wants to do with this blue gate, Baihu also hurriedly stepped forward and pulled Mu Chen back, and said in surprise.

"Uh...... I just want to smell and see if this metallic smell is coming from this door, what are you pulling me for?"

Looking at the white tiger who pulled himself back, his face was still filled with the expression that seemed to have saved the world, but Mu Chen said with a suspicious expression.

"Ah...... Belch......

Haha, nothing, nothing, you smell ......"

The white tiger thought that Mu Chen was inhaling too much metal smell in the air, so that his brain circuit suddenly short-circuited, but after pulling Mu Chen back again, Mu Chen's face was puzzled and explained to himself why Mu Chen went to put his head on the blue gate, White Tiger couldn't help but smile awkwardly, and hurriedly flashed his figure to the side to make way for Mu Chen.

And Song Qi, who had been behind Bai Hu and Mu Chen, couldn't help but snicker secretly after watching the funny behavior of the two at this time.

"What two iron hanhans!"

......

However, after making sure that the smell of rust in the air was not coming from this blue gate, Mu Chen also suddenly made a mistake.

Because, Mu Chen pushed the blue gate just now, but the blue gate did not move at all, plus the material of this blue gate is metal, and there are relatively narrow caves around it, Mu Chen did not dare to use his spiritual power to forcibly break open the blue gate.

If this cave collapses, then everyone will have to finish playing.

Moreover, the material that makes up this blue gate is also metal, and the sound it makes is extremely heavy, Mu Chen may not be sure that he will be able to completely break this door!

I can't help it, among the spells that Mu Chen can release, the attack range of the few moves with relatively large power is extremely small, at most, it can only break a few holes in the blue gate made of metal, but in that case, it is impossible to let the three of them walk in.

Mu Chen, who really couldn't think of any way, also told Song Qi and Baihu about his considerations, and asked Song Qi and Baihu if they had any other solutions.

I can't help but that I and Song Qi haven't gotten along for two years, and Mu Chen doesn't know much about what kind of spell Song Qi has cultivated during this period.

And the White Tiger, who is the Heavenly Pride of the Beast Clan, has unique conditions, so Mu Chen is asking if the two of them have other solutions.

It's just that after listening to Mu Chen's explanation, the white tiger did take the lead and hurriedly shook his head, and said: "Our beast clan is strong and strong, as you said, the stone slabs around here seem to be a little lax, if you use brute force, maybe it may really lead this cave to collapse." And my only way to do this is to use brute force to break open the blue gate, and as for the other schemes, I can't think of any other scheme. ”

It seems that at the moment, it can only depend on whether Song Qi can come up with some methods, otherwise, for the safety of everyone, Mu Chen can only decide to go home and swim back from the pool in the place at the beginning.

Facing Mu Chen and White Tiger, who were both helpless, Song Qi also thought for a long time before slowly speaking: "I'll see if I can summon some vines from this crack and knock them away, otherwise I won't have any other way, after all, I don't have many attack and control spells, but more spells for you to recover and amplify." ”

"Then you can try it first!"

Hearing that Song Qi had a way, Baihu also hurriedly pulled Mu Chen to the side, and stood obediently against the wall with himself, leaving room for Song Qi to cast spells.

And Song Qi didn't give in anymore, the staff in his hand also came out in response, and the faint green light flashed faintly, and Mu Chen saw that from the crack in the blue gate, there were tiny vines drilled out.

These tiny vines sprung up like mushrooms after a rain, and they continued to climb up the blue gate, and soon the blue gate was completely covered.

Since the blue gate lock was entangled, Song Qi also urged the spiritual power in his body, controlled these vines, and slammed outward, wanting to open the blue gate.

Slowly, this blue gate also has a tendency to loosen outward, but at this time, Song Qi is already sweating, obviously, the sturdiness of the blue gate is extraordinary.