Since the power of the forbidden sky still exists in this mountain range, there is no way, Mu Chen and Song Qi can only cross this mountain range on foot step by step.

I just don't know how long it will take to go.

It is estimated that when the two of them walk out of this mountain range, the condition of the two of them will be much more tired than walking out of the ice field.

This constant uphill and downhill not only tests arm strength, leg strength, but also waist strength, it is simply that there is no place in the whole body that can be relaxed, and it is necessary to go all out.

Originally, if this was flat ground, even if he couldn't fly, he could use the jet behind the 'Thor' mecha equipped by Mu Chen to speed up his actions, but the peaks were so steep that it was impossible to use the jet behind the 'Thor' mecha to accelerate.

I don't know how long I walked, but when I looked forward from the top of the previous mountain, I still didn't see the edge of this mountain range, and the ice field behind me was also nowhere to be seen.

However, when Mu Chen and Song Qi were going down the mountain, they met a small cave under the mountain peak under their feet.

"How can there be a cave here?"

The cave is not big, but it can still allow two people to pass side by side, Mu Chen and Song Qi are not blind, and naturally they also found a cave.

Actually, to be precise, this is not a cave, but a tunnel.

Because Mother and Song Qi looked inside from the outside, with the help of the light emitted by the 'Thor' mecha, they only found that this tunnel was long, and it seemed to lead to some mysterious place.

Unexpectedly, under such a barren mountain range, a tunnel could still be found, which couldn't help but surprise Mu Chen and Song Qi.

If it was in an ordinary place, under such a barren mountain peak, even if there was a cave, Mu Chen and Song Qi would not be willing to explore.

Because the peaks are so barren, how can there be treasures in the cave?

However, this place is really different, this is the blue hole of the ocean, everything is possible, even if there is no treasure, such a deep hidden tunnel, hidden between several mountain peaks, there must be some kind of turbulent beast existence.

Therefore, Mu Chen and Song Qi didn't plan to let go of this tunnel like this, after all, they couldn't find the edge of the mountain range at all now, and if they gave up this tunnel and continued to hurry, it might take a long time.

And if they enter this tunnel, at the same time, maybe Mu Chen and Song Qi have already harvested the treasure.

Anyway, coming from the ocean blue hole is also equivalent to a gamble, the divergence of various paths, the entanglement of various choices, which is equivalent to a choice, a bet.

"Do you want to go in, I think it's good to go in, the mountains around here are endless, maybe we have to walk for a long time, it's better to block in this tunnel, maybe there will be some treasures hidden, everything in the ocean blue hole can no longer be explained by common sense, maybe the straighter this peak, the more mysterious the treasures contained in it, maybe we think that the treasures in this tunnel absorb the vitality of this large mountain range!"

Looking at the tunnel in front of him, Mu Chen was already eager to try, and explained his thoughts to Song Qi, now it is up to Song Qi's opinion.

If Song Qi doesn't want to go in, then that's it, Mu Chen still can't bear to refute Song Qi, since Song Qi doesn't want to go in, then there must be Song Qi's own thoughts, why should Mu Chen force it.

But fortunately, after listening to Mu Chen's explanation and analysis, Song Qi finally nodded and agreed to enter the tunnel to explore the road.

Looking at the gap that agreed to enter this tunnel, Mu Chen was also very excited, although in this tunnel, are there any treasures......

With the help of the detection light on the 'Thor' mecha, Mu Chen and Song Jun crept forward in this tunnel, just like the tunnel that Mu Chen and Song Qi had foreseen before, this tunnel was also unremarkable.

The surroundings are damp and dark, the tunnel is silent, and there is no end in sight, all of which are the beginning of first-class horror movies.

Except for the footsteps of the two men, there was no other sound around, and the tunnel was very straight, so straight that it felt a little scary.

But Mu Chen can still feel that there is still a little bit of slope in this tunnel, it should be descending.

In other words, the tunnel that Mu Chen and Song Qi are currently walking in is straight down, but the downward slope of the road in this tunnel is very small, so that Mu Chen and Song Qi mistakenly think that they are just walking on flat ground.

The reason why people can feel that this tunnel is actually descending is also because of the self-rotation and control level device on Mu Chen's own 'Thor' mecha, which can automatically sense the horizontal direction, and slightly adjust the height of the contact between the feet and the ground, so that the driver always belongs to a horizontal state.

That is, because Mu Chen is always in a horizontal state, it is also because he found that the top of the tunnel in front of him is not horizontal at all, but has a certain slope.

However, Mu Chen can also understand the reason why this tunnel is inclined downwards - what guarantee will be placed on such a top, won't this be exposed all of a sudden?

Therefore, these guarantees should be longer than deep underground, but the slope of this tunnel is so small, it seems that there is also a long distance, and Mu Chen and Song Qi need to walk.

The immortal Mu Chen still tried the jet device behind his 'Thor' mecha in this tunnel, but even in this tunnel, the force that forbade all living things from flying still existed, like a lingering haze that had been tightly entwining Mu Chen and Song Qi.

"Don't try, if you can fly, you'll have to hit the top of this tunnel again, and you'll be hit on the head!"

It was very quiet in this tunnel, and when Mu Chen was testing whether his 'Thor' mecha could still fly, the roar emitted by the jet device of the 'Thor' mecha could be heard as long as Song Qi was not deaf.

Looking at Mu Chen, who still didn't seem to be too dead, and remembering the scene when Mu Chen rolled down directly from the middle of the mountain, Song Qi just shook his head helplessly and persuaded Mu Chen.

"Haha, okay, okay, let's hurry up!"

Naturally, he knew that Song Qi was caring about himself, and Mu Chen immediately turned off the jet device behind the 'Thor' mecha, this is the real Song Qi, speeding up and walking forward, wanting to get out of this tunnel quickly.

However, this tunnel is really long, but if you think about it, if the treasures in this tunnel are at the same depth as the 'holy fire' that Mu Chen and Song Qi found in the cave under the ice before, then the inclination angle of your tunnel, the ancient city estimates that he will have to guard it for a day and a night.

However, this is obviously unrealistic, not to mention that after walking for so long, it will be impossible to leave this mountain range, and it is impossible for such a straight and long tunnel not to be destroyed by other forces, so Mu Chen concluded that in the middle part of this tunnel, there must be other passages.

This is not a bet, but Mu Chen has come up with it based on his own experience, especially in a place like the Ocean Blue Hole, where alien beasts are born, there is basically nothing that can be preserved intact.

The two of them walked for a long time, from the time Mu Chen and Song Qi first entered this tunnel, it has been about two hours until now, but as Mu Chen expected, Mu Chen and Song Qi walked for so long, and finally found a hole in the front.

However, it is a little different from Mu Chen's guess, this hole does not seem to have been destroyed by other strange beasts, but it is like this.

Because—

The tunnel goes all the way to this cavern, and there is no other road here.

In other words, the tunnel and the underground cavity in front of it are natural.

Although there is a slight discrepancy with Mu Chen's guess, it is still the same.

Finally, I don't have to go on so hard.

Tired!