Judging by the degree of bonding of the gaps, there is simply no way to push open the sluice gates here.

"Use external force to destroy it, Ah Zhi should have a small detonation bomb there, and the heat of the detonation bomb can blast these instantaneous. The reason why Chen Hanyu chose to use the stun bomb is because although it is closed, the air is still very circulating, which shows that there is more than one place underground that can be circulated.

Estimating that there were other hollow areas here, Chen Hanyu ordered all the brothers above to come down this time.

"It can be blasted here, the space of the mezzanine is very large, and the heat of the stun bomb can burn all the ash and precipitation around it!" Deng Shengzhi clapped his hands and said that there was no problem at all.

His True Fire and Shock Bomb are two different concepts, True Fire can bring extremely high heat, but it will burn the entire entrance into a hard lump, not to mention that the precipitation here is already tight enough. The stun bomb will only release a large amount of heat for a short period of three seconds, and this heat will reach a high degree in an instant, and then all the tissue in the crevice will be softened and then destroyed.

Obviously, the latter is more convenient and doesn't require too much hassle.

When the slate was stirring, everyone heard a muffled sound, but it was such a coincidence that the slate fell off from the dark passage in an instant.

"Bang!"

"This loud sound is strong enough, it is estimated to be more than ten meters high!" Deng Shengzhi could tell the distance between high and low when he heard the sound, and he hesitated for a moment before exercising his spiritual power and jumping down.

Of course, it is not possible to jump straight like this, and considering his own safety, he still bends his knees hard to reduce the impact of landing.

Everyone followed, and it was only here that they were really close to the mountain.

"The position we are right now should be directly below the spiritual spring, which is relatively dry here. Chen Hanyu said and touched the stones on the ground with his hand, which were not only dry but also hardly had any water stains.

Except, of course, the dark river left over from the drainage.

But the amount of water in this dark river is far more than the water on the ground, and Chen Hanyu is curious about where the water is discharged.

It wasn't until Deng Shengzhi illuminated the entire underground that everyone could see what kind of existence was here.

"The design of this pipe is no worse than that of modern engineers, and the water just now is discharged down here, so it's no wonder that not a drop of water has been oozing here for so long!"

Now that he has figured out what is going on, Chen Hanyu does not have any concerns, he knows what this place is.

The answer lies in the next pit, and after walking forward for more than ten meters, a narrow cave appears, this cave is cool and swishing, and it is obviously a vent.

"Ah Zhi, you burn with a flame, and the wind will adjust the wind to the same strength as the oncoming wind!" Chen Hanyu quickly made a plan, as long as the wind on both sides was balanced, Deng Shengzhi's flame could burn at a fixed point, so that it would neither burn to himself nor burn out the entire range of the vent.

The weeds in the vent were quickly burned clean by the real fire, and Deng Shengzhi rushed out first.

Exiting the vent, they found themselves in a mountain stream in the back mountains.

"There are mountains all around, and this should be the back mountain, but this place is only separated. Chen Hanyu said and continued to walk forward, there was no reason for a vent to appear, but there was no corresponding place.

After careful observation, they found that the mountain directly opposite also had a small vent, but it was specially supplied with air.

"It's not difficult to find the entrance here, right?" Chen Hanyu asked with a smile as he looked at Deng Shengzhi.

The latter nodded and condensed the flames on his fingers, in this closed environment, only the air flow could change the direction of the flames, and Deng Shengzhi used this way to find the direction of the cave entrance.

The complexity of the mountain changed as soon as everyone entered, and they were faced with two identical forks in the road where the wind blew inward at the same time.

"It's not even through the wind, I'm afraid there's something wrong with that!"

Since the wind at both forks in the road was pushing inward, even if they were convection, they did not mean to go all the way to the end, which made the wind very puzzled.

"You are an expert in playing with the wind, you come to see what we should do?" Chen Hanyu left the problem to the wind, and now at this time, it is better to let the capable prevail,

Gale was not very sure, and if the group all walked the same way, it would be too much delay, so his suggestion was to divide the troops into two roads and go to different forks in the road.

This proposal was responded to by Chen Hanyu, and he also thought so, if he rashly walked into the same intersection in such an environment, the worst situation would be the annihilation of the whole army.

"That's it, Hurricane, Ah Zhi, the third child, you have one way, Ye Zhi Xiaofeng will follow me!" Chen Hanyu said and chose the fork on the right, his first feeling was that this place was very unusual.

Tempest smiled and nodded, saying that what he wanted at first was the left, and the left side was lucky for him.

"Brother Yu, which of them are right, do you say that we or the old madman, if we go wrong this way, will we die!" Ye Zhi was a little helpless, he felt that this place was not simple when he saw the corpses in the secret passage just now.

"There is no right or wrong, they are all chosen by themselves, they are all brothers, if they are in trouble we will be the first to go over, and if we have an accident they will be the first to come. ”

Chen Hanyu told Ye Zhi that these are mutual, and this is the tacit understanding he has always emphasized.

But at this moment, a sharp roar came from the other side of the passage, and everyone drew their weapons.

"What sound?"

The sound made the otherwise empty passage weird, and their nerves were tensed to the extreme.

"If you want to ask me, I don't know, the only thing I know is that there is a big mystery here!" Chen Hanyu said and pointed to the position above his head, which was full of green fluorescence.

"Fireflies?" Ye Zhi muttered, "How can fireflies survive in such a large air current, this is obviously unreasonable!"

As he spoke, he unfolded all his defenses, which were enough to alert him.

It turned out that Ye Zhi was right, and there were a lot of crawling insects not far in front, and these were spiders.

"It's the first time I've seen a palm-sized spider, my good man, there's everything underground!" Tang Feng didn't rush forward, he didn't know the path of these spiders, so he honestly stayed in the defense layer and watched everything here.