Xue Hai's craftsmanship is formation and mechanism, and after some research on this iron hall, he came to the conclusion:

The walls of this iron hall are mezzanine, and there is a mezzanine inside the iron plate, which is filled with iron powder, and the innermost part is a stone slab.

Therefore, it is impossible to dig a hole out of this wall by cutting at high temperature, because once the iron plate is cut, the iron powder inside will melt and cast the cut opening to death.

Once the iron plate is cast with iron powder, it will not be able to cut through it with high temperature.

As for someone proposing to use a steel drill to penetrate the iron plate, Xue Hai vetoed this proposal, and it is estimated that there is an empty warehouse above the iron hall, and the empty warehouse is full of iron powder.

Once the iron plate is penetrated, the iron powder will flow out, and the air vents of this iron hall are all on the ground, and once the iron powder blocks the air vents, the people in the iron hall will die of suffocation.

When you hear it, isn't this going to be trapped here!

Xue Hai waved his hand and said: "It's not like this, no organ in the world will die, especially this kind of iron hall with vents, he is not only a cage to trap the enemy, but also a place to protect his life, so there must be an exit here."

Saying this, Xue Hai stomped on the ground with his foot, and Hai En immediately understood when he saw it, presumably this exit was on the ground.

Huang Meng found the location of the exit, which was a floor tile in the middle of the iron hall near the northwest.

When the tiles were removed, there was a downward passage with an iron ladder on the east side of the passage.

This passage is not deep, and it is more than three meters up and down, but it is pitch black inside, and you can't see your fingers!

Everyone hurriedly turned on the mobile phone lighting, and there was a bright light in front of them.

With the light from the mobile phone, several people went down to the bottom of the passage and looked around, which was a dark passage made of stones.

Zheng Zhinan subconsciously pulled out the pistol, and Hain motioned for him to put the pistol away, in this kind of place, it is estimated that the pistol is useless.

A few people walked forward along the dark passage, and Xue Hai reminded everyone to be cautious.

After walking for two minutes, Xue Hai beckoned everyone to stop, and he said to everyone: "According to this distance, we seem to be out of the range of the house, I'm afraid that even the yard will go out as we move forward."

"When we came just now, we didn't see a fork in the road, it seems that there is a secret door!" Hain spoke his mind.

So a few people turned around and walked back, but when they walked back to the passage they came from, everyone was surprised to find that the entrance of the passage had been sealed.

"Oh no, fooled!"

Xue Hai patted his head and said in annoyance.

After that, Xue Hai explained to everyone the doorway, which was a trap, that is, to cast down the enemies trapped in the Iron Hall, and then arrange a few people at the entrance of the cave.

At that moment, the people who went to the secret passage below found that it was a dead end, so they could only return, but the exit could only allow one person to pass through, so as long as the entrance of the cave was guarded, the people below could only send people to the head one by one if they wanted to go up.

Everyone was silent, and only now did they know how powerful this Mo family was doing.

And the worst thing is that in this channel, the mobile phone has no signal, and it can't even be called, obviously, there is a signal shielding device here.

"Senior brother, why don't I go up and explore the way!" Han Bin took the initiative to ask.

"Being brave and not dying are two different things, don't be impulsive!"

Hain said calmly.

Huang Meng shook his wit at this time and said: "Senior brother is right, if we don't go out here, people from outside will come to save us after a long time!"

"Are you thinking too good, you know, we are in the hall!" Zheng Zhinan replied!

"What's wrong in the hall, what's wrong?" Huang Meng didn't understand what Zheng Zhinan wanted to express!

Er Xiao let out a heavy sigh, and then explained to Huang Meng: "The problem is who would have thought that we would be trapped by others in the hall!" Then he asks Hain what the hell he can do.

"You don't need to ask, of course I'm looking for someone to come and help!" Hain replied nonchalantly!

"But, our phones are out of signal!" Zheng Zhinan said everyone's doubts!

Hain smiled slightly, then pinched a trick in his hand, and muttered words in his mouth, and after a while, he untied the trick and looked at everyone and said, "It's done, wait!" …

About half an hour later, the lid on the passage was opened, and the moment the lid was opened, a voice sounded from above: "Master, are you there?"

Hain responded: "Yes!" Then he climbed up the passage.

A few people returned to the hall to see that there were indeed a few people lying around the entrance of the passage, and these people were already unconscious at this time.

As Xue Hai expected, these people all had knives by their side.

Han Bin looked at those cold and shining knives, and secretly rejoiced in his heart, fortunately Hai En stopped him from coming up, otherwise, he would really become an unjust soul under this knife.

When the succubus saw that everyone had come up, she asked Hain if there was anything else, and after receiving a reply, she said that she was still doing a live broadcast over there and left.

After the succubus left, Han Bin muttered to Haien: "Senior brother, why did you let her go, with her, we can have more powerful helpers!"

"Hey... Binzi, you are young, none of these people under Old Lady Qi are fuel-efficient lamps, it has reached this situation, those people have already tried to protect themselves, so, find Qi Lao immortal, and then it's over! Hain replied.

Zheng Zhinan waited for Haien to finish speaking and immediately rushed to the second floor, but was stopped by Erxiao, who asked Zheng Zhinan: "What are you going to do?"

"Of course I'm looking for that old immortal!" Zheng Zhinan replied.

Huang Meng echoed: "Yes, at this time, you should strike while the iron is hot!"

The second little withdrew his hand and did it

A gesture of invitation said, "Then you can go and look for it, we are waiting here for you to come back."

Zheng Zhinan was said by the second little one, and he looked at everyone in confusion.

Xue Hai explained to Zheng Zhinan: "I'm afraid there are a lot of secret channels in this house, and the Iron Hall hasn't fallen until we came out, which means that they have been hiding, it's not that I look down on you, you will definitely not find their hiding place."

Zheng Zhinan still agrees with Xue Hai's statement, the museum is an example, that is the place he always went to when he was a child, but he didn't know that there was a fourth floor there.

Xue Hai asked everyone to calm down, and he found twenty-four of their most powerful disciples in the wind arena to conduct a comprehensive inspection of the old lady's house.

After some inspection, a total of more than a dozen secret rooms, more than 20 secret passages, and dozens of various pins were found.

Following behind those disciples, Mo said that it was Zheng Zhinan, and even Hai En was shocked to see it.

If it weren't for Xue Hai and his disciples, these people would have died in these pin ambushes.

In the end, they took out Yuan Cheng and Qi Lao Immortal in a secret compartment on the third floor that was sandwiched between two rooms.

But the old immortal was already dying.

"Okay, I'm losing, if you want to kill, you have to listen to the respect." Yuan Chengyi said with a stiff neck.

Hain looked at Yuan Cheng and said, "This is not the style of your Thousand Domains Temple, it is so easy to admit defeat, come to think of it, you are looking forward to me killing you two!"

"Hahahaha..." Yuan Cheng suddenly looked up to the sky and laughed, this time Hain was even more sure that things were not so simple.

After laughing, Yuan Cheng said coldly: "You are actually good enough, but it's a pity that you, like your master, are too smart, and you have a little more confidence than your master."

"Let's hear it!" Hayne said.

"I think your master didn't figure out the situation back then, so he didn't dare to use the formation that summoned 'Devouring', so ah, we waited for thirteen years. Thankfully, you're stupid enough to really move that formation. The more Yuan Cheng spoke, the more proud he became, and finally fell into madness.

Without much effort, Yuan Chengcheng fell to the ground due to exhaustion, and Hai En hurriedly went over to check, this old way was actually poisoned.

When Yuan Cheng was dying, he said with great irony: "You only know that we tried our best to open that purgatory entrance, but we didn't think about it, if we didn't use your hands to open that entrance, how could we hit you in the face..."

Speaking of this, Yuan Chengwan spat out a mouthful of blood, and he said strongly: "For thousands of years, you have regarded us as aliens and cannot tolerate us, but without our Thousand Domains Temple, is this world really peaceful?"

After saying this, Yuan Cheng's eyes began to drift, and after a few more convulsions, he said the last sentence: "The entrance is about to open, come and feel the horror of this purgatory..."

After saying this, Yuan Cheng Lao Dao died of anger, leaving Haien and the others to look at the two corpses on the ground in a daze...