The big coffin they were in was originally close to half a meter from the ground, but now it was tilted, and the bodies of several people were tilted.

Especially the things that Lu Yu put on the ground, all rolled to the other side at once!

Lu Yu didn't have time to think about it, so he turned around and ran directly to those magical weapons that hadn't had time to install them.

Just kidding, those magic tools are basically all his family assets, if they are all lost at this time, then there is no need to play!

Fatty Wang also knew this very well, so he quickly turned around and packed up those magic weapons with Lu Yu.

Lu Yu kept moving his hands, and quickly put the remaining magic weapon into the gap of the ghost hole magic wood, so as not to cause an emergency later and lose things.

Wu Xie, Lao You and Master Liang also followed to help.

It's just that they didn't notice that when Master Liang was helping, he hid a small bead and didn't give it to Lu Yu.

The big coffin was tilted, and Lu Yu didn't notice so many things, so he hurriedly put away his things, and said anxiously: "Fatty, rush out, you bring Lao Xie and Master Liang with you."

His left arm was broken, and he couldn't use his strength. After giving an order, he grabbed Wu Xie with his right hand and said in a deep voice, "Hold on tight!"

After finishing speaking, he stepped on the ground with his right foot, and the whole person rose into the air!

With one stroke of the ladder, he quickly climbed up and climbed to the top of the coffin in the blink of an eye.

Although Fatty Wang was reluctant, his left hand was always itchy and his right hand was cold, so he led the two of them to the top of the coffin.

Standing on the top and looking at it, the complexions of several people became very bad!

A very obvious crack had already appeared on the bluestone floor under the coffin.

It looks like it won't be long before it will collapse!

By that time, there were still countless skeletons in this coffin, and no one knew what would happen.

Lu Yu looked around, and finally saw a trace of blue light in the crack!

In the air, there is gradually a strange smell, like the smell of smoke...

"This is... the smell of sulfur!"

When Lu Yu noticed the crack, Wu Xie's expression suddenly became extremely ugly.

A long time ago, when he first entered the cave, he felt that the smell was a little strange and familiar, but he couldn't remember it at that time.

Until now, I finally remembered that the smell is exactly the smell of sulfur!

It's just that the smell of sulfur is mixed with the moisture of the cave, making it difficult to distinguish.

Until now, he was absolutely sure that the smell was sulfur!

"That blue flame is produced by burning sulfur!"

Wu Xie spoke quickly, and hurriedly said: "Generally speaking, it's normal for hot springs to contain sulfur, but I don't know why there are so many sulfur mines down here..."

"Sulfur burns to produce sulfur dioxide. When sulfur dioxide dissolves in water, it will form sulfurous acid. Further oxidation of sulfurous acid will quickly and efficiently produce sulfuric acid. This is how acid rain is formed..."

They are not very clear about the changes Wu Xie mentioned.

But sulfur dioxide is poisonous, and sulfuric acid is highly corrosive, as we all know!

Moreover, if there is a large amount of sulfur dust in the air, it will cause an explosion, and by that time...

"Damn it! It's over! Brother, what should I do!"

Seeing those blue flames bursting out from below and burning to the ground, Fatty Wang only felt that one head and two were bigger!

Not only does he have a big head, but everyone else has big heads now!

Below is a burning sulfur mine. There is sulfur dioxide in the air. Fortunately, the water has not come up at the moment. If the water comes up again...

and many more!

water!

Lu Yu thought of something and quickly looked back.

I saw that the big hole covered by the spiritual coffin did not come out again, and it was still dry.

Lu Yu carefully recalled that the water that came out of that waterway before was not a hot spring. Although it was a bit muddy, it was just because of the "backflow" that there were some impurities in the water.

That is to say, the big hole should be connected to the other side of the divergence of the river.

"I see!"

Before Lu Yu could speak, Fatty Wang suddenly yelled: "I know what's going on with this big coffin. The pillars under the big coffin are the golden nanmu pillars we saw below!"

Lu Yu thought of this when he saw Da Zhu before.

But he didn't expect that what Fatty Wang said next had some truth.

"Brother, I have never said that the bones contain phosphorus and there are will-o'-the-wisps. I guess that those bones fell too much just now. Somehow, the will-o'-the-wisps ignited the sulfur in the cave, and the sulfur burned the big pillars." Already!"

Hearing this, Wu Xie nodded again and again: "This possibility is very high, Mr. Fatty, so what do you think we are doing now?"

In a word, Fatty Wang was stumped again.

If he can figure this out, he has already burned his incense. At this time, it is absolutely impossible for him to think of a way out.

"How about going up?"

Fatty Wang tried to say something.

Just as soon as the words fell, the blue flames below the underground cracks were seen burning up, making the whole hall even brighter!

In the air, the pungent smell became more and more intense.

And above them, more and more fly ash floated down...

"not good!"

"It's going to explode!"

"retreat!"

Before he could say anything more, Lu Yu stretched out his hand, pulled Wu Xie and jumped out of the coffin again, and ran towards the big hole in the coffin...

Chapter 650 The Robbing Cave Under the Underground Palace

After running a few steps, I heard a loud "boom" behind me, followed by a powerful wave of air!

Lu Yu only felt a strong air current, which knocked him up all of a sudden.

I can't hear any "buzzing" in my ears, I just feel dizzy!

The next moment, I suddenly felt a pain in my head, as if I was hit by something.

When I looked up, I found a bone falling from the sky.

No, not a piece!

The flash explosion just now blew up the bones piled up next to the coffin, and all kinds of bones fell down like raindrops in an instant.

Lu Yu shook his head vigorously to wake himself up, and saw Fatty Wang not far away at a glance, and hurriedly shouted: "Fatty, how are you!"

"It's all right!"

Fatty Wang also woke up, and was hit by a bone that fell from the sky just after he finished speaking. He quickly covered his head with one hand, and ran to Lu Yu's side in embarrassment: "Little brother, what should I do!"

"Get down quickly!"

Fortunately, the flash explosion just now should have occurred outside the large coffin, and most of the impact force was absorbed by the large coffin. They were only a little dizzy from the shock and were not injured.

After reacting at this time, Lu Yu hurriedly urged several people to jump down the big pit in the middle of the coffin.

If they don't go on, I'm afraid they won't be so lucky in the next flash explosion...

At this time, there is no time to think about what is under the big pit. In short, the big pit is the only way out. You have to go if you go, or you have to go if you don’t go!

After jumping off the big pit, there is a passage about one meter high. Several people can't walk at all, they can only crawl inside.

Lu Yu looked at it and suddenly felt strange!

This tunnel is actually... a robbery cave!

And the digging is very professional, like... the skill of Captain Mojin!

As Lu Yu crawled forward in the big hole, he thought secretly in his heart.

Could it be that this hole was dug by the Northern Wei Dynasty?

Speaking of it, the Northern Wei Dynasty did not talk about riding, and they can be called the descendants of Cao Cao's Mojin Xiaowei, and they are all professional "official robbers".

In the Mojin lineage, there are Faqiu seals and Mojin talismans handed down from generation to generation, not to mention the "He Mu Ji" handed down.

Lu Yu was thinking about it, when Fatty Wang's voice suddenly came from in front of him: "Little brother, what should I do, which way to go."

"What do you mean?"

"There are eight roads ahead."

"Qimen Dunjia?"

Lu Yu was slightly taken aback, let Fatty Wang dodge, and crawled over by Fatty Wang's side with great effort.

Looking after the past, there is a horizontal and vertical space in front of you.There are about ten meters in width and nearly two meters in depth, like a traversing robbery hole.

On the other side of their robbery hole, there are a total of eight holes, one next to the other.

No one has even heard of this structure, let alone seen it.

No matter who digs a hole, it is impossible to dig like this.

Dig eight holes in a row, and finally gather together?

There is no such operation in the world!

At this moment, Wu Xie suddenly said: "Little brother, did you hear any sound?"

Lu Yu listened attentively, and from the eight cavities, there was a faint sound of "Wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooow".

"This is……"

Lu Yu frowned, illuminated it with a flashlight, and took a closer look. Those eight holes were completely different from the robbery hole they had just drilled through! .

The inside of the eight passages is smoother and more humid.

"Ok?"

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