Xiaohua said as she walked towards the edge of the waterhole.

I want to wash all the black things on my hands.

However, after walking a few steps, he realized that something was wrong.

Originally, he thought that this black thing might be the dust on the rocks.

But this feels wrong, and it is obviously sticky.

Twist it with your hand, it is smooth and greasy, as if it is mixed with a lot of oil.

"It's wrong, this—this thing seems to be kerosene!" Xiaohua said in a deep voice.

Everyone else was looking around for a while, trying to find another breakthrough from here.

Hearing Xiaohua's words, they all came over curiously.

"Hua Ye, what's the situation? How can there be fire oil here?" One of the guys said.

At this time, Su Mu had already walked quickly to the side of the cave wall, shining a flashlight on it and looking at it carefully.

Xiaohua saw his movements and hurriedly followed.

Then he saw that in the cracks in the rocks of the cave wall, there were piles of this fire oil in his hands.

At intervals on it, there are also cotton wicks embedded in it.

The cotton wick is black and has obvious traces of burning.

And if you look all the way up along this gap, you can see that there is fire oil in the cracks of this whole wall!

"This ...... What's the situation? Why do you put so much oil in the walls?" Xiaohua was confused.

The others were also puzzled.

The guys brought by Mrs. Huo turned their puzzled eyes on her.

For them, Mrs. Huo is their main family, and their first reaction when they encounter things is to rely on her.

It's a pity that this time Mrs. Huo also ran out of ideas.

He took two steps back and gave up his place.

In fact, she also felt a little shy, feeling that her dignity as the head of the family had been challenged.

But it can't be helped, she's getting older.

In addition, this ancient building is too special and treacherous.

So this situation should be solved by young people like Su Mu.

"These oil should be used for lighting!"

"It's like a normal tomb, don't you have everlasting lights?"

"It's just that the shape of the ever-bright lantern here is more chic!" The road is cold.

He usually likes to collect information the most, and he also saw the lantern in the tomb from the Internet.

His statement won the agreement of most of the people present.

I think what he said makes some sense.

After all, in such a place, so much fire oil was made.

I can't think of any other use than lighting.

However, Su Mu shook his head and denied his statement.

"No, if it's a permanent lamp, it's a waste!"

"You see these cores are so close together, if you light one of them, the others will be ignited instantly."

"When the time comes, it won't be easy to destroy it."

"Everyday lighting is not designed to look like this!"

When Su Mu said this, everyone also felt that it made sense and nodded one after another.

They feel like they are like grass on the wall at the moment, and they feel that everything makes sense.

In a word, they have no idea of their own!

"Whatever it is, let's just light it up and see the effect!"

"Maybe there's some important hint on this, or maybe maybe this flame will outline some special pattern to guide us in the direction!"

Wu waved his big hand and said heroically.

"That's right, maybe it's also a trap, and you can only move on to the next step if you ignite it!"

"Practice is the only truth!" The four-character brother is also on the same front as Wu Jing at this time.

And Wu Jing, who was in a hurry, couldn't wait to dig out the lighter from his pocket.

took a step forward and wanted to light the fire, but was stopped by Su Mu.

"Wait a minute, I've got it!" Su Mu said.

What he wants is this kind of effect, and to figure out the mystery at such a critical moment so that it will not seem too abrupt.

Otherwise, it would seem that he is too omniscient and omnipotent.

Although, his personality is like this in everyone's hearts.

But he likes to keep a low profile......

The main thing is that I don't want other people to feel excessively inferior.

"What comes to mind?" Wu looked at Su Mu expectantly.

"This fire is indeed a point."

"It's just that everyone should be prepared for some thrilling situations that may happen after igniting it!" Su Mu said.

Xiaohua: "Show me."

"Just now, when Brother Jing said that he wanted to light it, I figured out the real effect of these fire oils here."

"The entrance to the cave is relatively airtight, and once these flames are lit, it will be a very spectacular sight."

"And the huge flames will quickly consume the oxygen in the air."

"At that point, the air pressure here will be lower, and a device similar to an air pressure pump will be formed here!"

Hearing this, the others were still a little foggy and didn't react.

And Xiaohua was the first to understand what Su Mu meant.

"I see! I see!" He said excitedly.

"Su Mu, you're really amazing!"

"That's what you say......

"I didn't think of that!"

Xiaohua's shocked expression was obviously completely impressed by Su Mu.

If it weren't for so many guys still here, he wouldn't want to kneel down and kowtow to Su Mu.

Mrs. Huo's expression at this moment was also full of shock.

At the same time, it is also full of joy.

Because this means that there are more possibilities to find Zhangjia Ancient Building.

"Little Brother Su Mu, what we have to do now is to ignite the flame."

"After activating the mechanism, will this passage to the Zhangjia Ancient Building appear?" Mrs. Huo asked.

"This...... Theoretically, of course, there are other possibilities!"

"Maybe when the mechanism is activated, we'll be pierced through the heart by ten thousand arrows, or we may be stoned to death by the stones that fall from above." Su Mu said.

"Brother Su Mu, don't scare us!" Huo Xiuxiu said with disgust.

"I'm not trying to scare you, I'm just explaining the pros and cons of this matter in advance."

"After all, this mechanism hasn't been opened yet, and anything can happen."

"If anyone is scared and wants to quit, it's still too late!" Su Mu spread his hands and said.

When he said these words, he mainly said to Mrs. Huo's guys.

Mainly, after the mechanism is turned on for a while, the scene may be a little bigger.

It also looks a little thrilling, Su Mu is worried that these guys will be too flustered and will cause some trouble to everyone.

Moreover, there are indeed many dangers underneath this mechanism.

Before entering the Zhangjia Ancient Building, there was only one chance to exit.

Therefore, he had to make it clear in advance.