"Can you guarantee that you'll be back to normal after drinking it?" Xu Xin glanced at her. "What if you suddenly go crazy and attack us?"

Although this potion can be taken by intermediate mutant creatures, one still needs to be cautious.

"Then...then why don't you put me in the bracelet..." Lou Feier said eagerly looking at the potion in his hand.

"What's wrong?" Zhao Xiaochuan's voice came from the distance of the underground warehouse. "What happened?"

"It's okay, you guys continue." Xu Xin replied, and then put away all ten bottles of medicine on the shelf. "It's not safe here, don't make things complicated. Wait until the situation stabilizes, or after we return, then you can take it."

"Well... okay..." Lou Feier could only nod reluctantly.

"Did you find anything over there?" Xu Xin walked to a shelf nearby.

There were also ten bottles of the same medicine on the shelf, and he put them all into his backpack.

In this way, he had twenty bottles of potion.

There is no such thing as too much of these things.

"Oh, right, come and take a look!" Lou Feier immediately dragged Xu Xin over there, "That thing might be related to these stone creatures!"

Something to do with stone creatures?

Xu Xin immediately followed her to the location she had just observed.

"This is……"

There is also a shelf here, and on the shelf is a fist-sized metal ball.

It emits a golden light, indicating that it is a gold-level item.

Xu Xin took the metal ball in his hand.

So heavy!

[Radioactive Metal Ball Bomb (Gold): Contains a special radioactive metal element that scatters outward upon impact, causing radiation to affect surrounding organisms, turning their flesh and blood into stone.]

"Hiss——" Xu Xin took a breath of cold air.

This is……

Weapons?!

Isn't this a grenade?

Furthermore, it was a grenade that instantly petrified any creature it hit?!

There's actually something like this here?!

"And here!" Lou Feier waved to Xu Xin from a nearby shelf.

In just a few seconds, Xu Xin put all the dozen or so radioactive metal ball bombs on the shelf into his backpack, and then walked over.

On this shelf, there is also a metal ball bomb like the one just now, but this one is much bigger than the one on the previous shelf!

[Large Radiation Metal Ball Bomb (Gold): Contains a special radioactive metal element. Upon impact, it scatters radiation outward, causing radiation to affect surrounding organisms, petrifying their flesh and blood. There's a chance of petrification mutations.]

Xu Xin's eyes shrank.

Unlike the ordinary petrification of small bombs, this large bomb is...

There is a chance of petrification mutation!

Moreover, the following introduction...

He turned to look at the stone statues behind him that were still motionless.

Have they undergone petrification-type mutation?

"These weapons are so powerful! I think we shouldn't stay here too long." Lou Feier looked around. "If it suddenly dropped a bomb like this, we'd all be petrified."

Xu Xin nodded slowly: "Speed ​​up the search. Besides these resources, are there any clues that can help us escape from this prison?"

"Okay!" Lou Feier nodded and was about to turn around and leave when suddenly, Wang Lei shouted.

"Hey, hey, hey, you guys! Come over here and take a look! I found the key to completing this event!"

Except for Wang Lei, the others were all shocked by what they found on the shelves. When they heard what he said, they all looked at him.

At this moment, he was holding a...

Very large, metal key!

A metal key at least twenty centimeters long!

The entire key emits golden light!

The four people who were scattered around the large warehouse immediately passed through the group of stone statues and gathered towards him.

"Another key!" Wen Guixin was a little surprised, "There is actually a key hidden in this warehouse."

"What is the key used for?" Xu Xin asked from a few meters away before he even arrived.

"Uh..." Wang Lei scratched his head. "They say there's a key to a branch prison. Once you unlock all of them, you can return to the surface. I don't know where this branch prison is. How about Brother Xin, come and take a look?"

As he said that, he handed the big key to Xu Xin.

Secret passage?

Xu Xin reached out and took the key.

[Vine Bundle Key (Gold): The key to unlocking the northern Vine Bundle branch prison. There are six Vine Bundle Keys (Gold), one for each of the six Vine Bundle branch prisons. Once all prisons are unlocked, the main Vine Bundle mechanism will be activated, unlocking the passage to the underworld.]

Seeing the introduction, Xu Xin's eyes widened immediately and he said happily, "That's it!"

Finally found it!

Vine bunch branches?

Xu Xin's heart moved.

Could it be that the six thinner vines that slanted down from the air and penetrated into the ground were the ones that sent them down?

etc……

A passage to and from the underground world?