Inside Iron Tooth City.

In the underwater tunnel, a group of more than a dozen men in black stood in front of a stone wall covered with moss marks.

After coming ashore from the water, Ouyang Heng followed everyone and walked along a passage. When everyone stopped, he couldn't help but marvel in his heart.

This place is really full of miraculous craftsmanship.

Who would have thought that there is such a building underground.

If the senior hadn't found the entrance, it would be difficult for everyone to find this place.

No wonder it has been preserved here for thousands of years without being known to the outside world.

"Next we are going to enter the second portal. I have never entered here before, so you can do your own thing."

The senior said calmly.

"The second portal? Uncle Master, how many are there?" one of them asked.

"I don't know. I only know that you can enter the second portal from here. This is the news I learned from another underground palace."

While the senior was talking, he took out a compass and calculated the direction.

Next to him was a man in black, holding a fire stick in his hand, illuminating the compass in the senior's hand.

Ouyang Heng only felt that these people were very professional, and the items they carried with them were all wrapped in waterproof layers.

So when you break through the river, you can use all the items you need.

"Qian Bili broke the army, Dui was corrupt and shocked the giant Xun, Lian Gen Wu Qu, Kan Wen and Kun Lucun...

The senior was mumbling something, and the compass was placed flat in the palm of his hand and moved slowly.

"Okay, I've found the direction."

The senior glanced behind him and said, "You all take two steps back."

After everyone heard this, they all stepped back without hesitation.

Who knows what will happen, it is more reliable to listen to the seniors.

After everyone retreated, the senior stretched out his palm and knocked on the wall very regularly.

Ouyang Heng heard the senior knocking on the wall, and each blow caused a trembling sound, which seemed to have touched some mechanism inside.

"Uncle Master, what will happen if the order here is wrong?"

A younger woman in black asked.

"Haha... I made a mistake. Not many of us will survive." The senior sneered.

"Senior, what mechanism is this? So powerful?" Another person said unconvinced.

"You think I'm going to talk nonsense? This door itself has a mechanism, black fire oil!"

"If you get the sequence wrong and the black fire oil spurts out and burns, this place will turn into a sea of ​​fire. With your Qinggong and body skills, it is difficult to completely avoid it. Once one sticks to your body, you will never be able to get rid of it."

The senior sneered, his voice was sinister.

No one spoke.

Everyone is a member of the thieves, who doesn't know the horror of black fire oil.

Once the black fire oil is ignited, it cannot be extinguished even if you jump into the water. The fire will penetrate deep into the body, burning from the inside out, and will burn the person to ashes.

There are not just one or two people who died under the black fire oil. After thousands of years, it is hard to count how many people have died.

"Click..."

The senior suddenly stopped moving, his brows furrowed, and a sharp light appeared in his ordinary eyes.

"No, someone has opened this mechanism!"

"Someone has come through this door!"

"You all are ready, wait for me to open the door, and enter as soon as possible."

The senior's palm shook, and a palm print seemed to appear, followed by a series of clicking sounds.

The stone door on the stone wall slowly opened.

At this moment, everyone's spirits were tense.

No one knows whether the black fire oil will spray out...

In addition, since this door has been opened by someone, is there someone ambushing nearby?

Sometimes, institutions are scary, but people are even more scary.

After the stone door was fully opened, what everyone saw was not a dark space, but an underground passage illuminated by light.

The passage was illuminated by oil lamps hanging on both sides.

"The smell of blood..."

The senior said softly.

He quickly stepped in and said sideways: "Come in, everyone, let's speed up, don't let anyone get the first step."

"Uncle Master is right. If we are preempted by others, our journey will be in vain."

"Yes, there is a bloody smell here. There may be more than one wave of people here."

"The walls are all scratched by swords. These are the latest scratches. A fierce fight took place here."

The people in black have keen eyesight and have already checked for clues nearby.

Everyone came to a common point of view, that is, someone has already entered, and there are more than one wave of people.

In this case, there is no need to delay and there is no need to speed up.

Under the leadership of their senior uncle, everyone began to walk quickly along the passage.

After a while, the front suddenly separated and became three different passages.

"What should we do? Should we go separately or go together?"

"Of course Sanjou left separately."

"I don't agree. If we separate, we may be defeated by each other."

"We still listen to our uncle's arrangements."

Everyone began to disagree, and no one was sure which method was right.

"Let's mark them all. Let's go along one path first." Finally, the senior made the decision.

Even if they had different opinions, they did not argue with the seniors in public.

The thieves seem to be very scattered, but in fact after entering the ancient cemetery palace, there is a set of rules, and everyone is relatively abiding by the rules.

Someone carved marks on the wall.

Ouyang Heng also used the tip of his knife to carve a mark on the wall that only he could understand.

After a period of time.

"What's going on ahead?"

"There are five passages, which one should I take?"

"It's better to take the one on the far right."

"Let's change it to the one on the far left this time."

Everyone was whispering.

The senior took a step forward and chose the middle one.

After walking for a while, suddenly there was no light in front and no oil lamps on both sides.

Someone wanted to light a fire, but was stopped by the seniors.

"Don't light the fire. We didn't have enough energy in the first paragraph. Lighting the fire will suffocate us." The senior gave the reason.

Ouyang Heng took a deep breath and noticed that the air here was relatively thin.

"Follow me. It doesn't matter if there is no light. I can explore the night."

Senior stepped into the darkness.

Since the senior said it doesn't matter, the others won't say anything more and just follow along.

There was no light passage, so everyone felt very nervous while walking.

If danger suddenly appears in the dark, you will definitely be much slower than under the light.

Fortunately, we didn't encounter any dangers along the way.

After walking for a while, the light appeared again in front of them, and everyone breathed a sigh of relief.

"Something's wrong, this place feels so familiar."

"Yeah, why does it look like you've been here before?"

"This is where we have been, and there is my mark here."

One of the men in black said nervously.

Ouyang Heng took a look quietly, and sure enough, he saw the mark he made himself.

They actually returned to where they were from the beginning.
Chapter completed!