"So that's it."

Ye Chen stopped for a while and nodded lightly, now, he finally understood what exactly happened here.

Two minutes later, he heard footsteps coming from outside, and then he stood up and glanced over, only to see a bald man following Ada coming over.

From the clothes he wore, it felt somewhat odd and completely different from those of ordinary people.

The most critical point was that as soon as the man entered, they immediately smelled a strong scent of herbal medicine emanating from his body.

"Old man, what's going on, why did you suddenly call me here?"

"Hehe, this time, it's probably your turn to show your skills. Come, take a look at this, what is this thing?"

Saying this, he pointed in that direction, and Old Niu hurried over after hearing him.

He reached out his hand and then held the object in his hands.

At that moment, he just paused, then turned his head to look back at the old man.

"Where did this thing come from?"

"Don't worry about where it came from, just tell us what exactly this thing is?"

"What it is, I don't know yet, but judging just from the tightly sealed packaging, this is not something meant for storing ordinary medicine."

"Oh, it's not for storing ordinary medicine? This, there is no difference right? I just touched it a bit earlier, it seems like just an opaque sealed plastic bag."

"No no no, you're wrong. It's definitely not a sealed plastic bag. This is made of a special material, and inside, it can maintain a constant temperature and humidity."

"What? Constant temperature and humidity? That's not possible, how could a plastic bag have such a great function?"

"Old man, let me tell you again, it's not a plastic bag. Strictly speaking, it should be considered a special container. What it can do is entirely different. Come on, try it if you don't believe me."

As he spoke, Old Niu took out a lighter from his pocket.

"What, you want to set this thing on fire?"

"If it were an ordinary plastic bag, igniting it now would certainly set it aflame, but look at this."

As he spoke, he then held the other side directly in his hand.

Then, he took out the lighter, directly placing the plastic bag over the flame.

Next, a miraculous scene occurred, everyone saw clearly, the plastic bag did not undergo any change, on the contrary, the flame of the lighter gradually shrank, and eventually, it extinguished completely.

"What, what's going on here?"

"Hehe, I've already told you, it's a container that maintains constant temperature and humidity and is made of special material. Not only will it not ignite, but more importantly, it can even extinguish fires. Understand?"

"Good heavens, this is really amazing. What kind of items is this plastic bag generally used to store?"

"Well, I do know there's one thing that can be stored in it, but I can't believe it might really be—is it really what I think it is? From the shape and properties, it really does seem similar. Don't rush, let me examine it closely."

As he spoke, Old Niu held this object, carefully observing it up and down, then he reached out his hand.

On top, there seemed to be something similar to an invisible zipper, which Old Niu gently opened.

When he saw the paste-like substance inside, his eyebrows were tightly furrowed, and at last, he held it underneath his nose and gently smelled it.

"Good heavens, I didn't expect it to really be this."

"What is this thing?"

"This is called Rejuvenation Grass."

"Rejuvenation Grass? What's that mean?"

"Just considering the literal meaning, you might think isn't it a medicine that brings the dead back to life? But let me tell you, it's not an oral medicine. It should be a topical application medicine."

"Topical application medicine?"

"It can be applied to a skin lesion, and then this substance will allow new skin to grow over it."

"That means, all scars should be treatable this way, right?"

"No, normal scars are not treatable with it. It only works on some type of corrosive skin conditions, which implies that it's essentially a repair agent."

"Is this substance really rare?"

"Extremely rare, and even though I've traveled through the Martial Arts World for many years, I've never seen this substance before."

"What do you think, if this substance is kept in a laboratory, what does it intend to achieve?"

"It's quite obvious, they want to conduct some special human experiments, particularly on human skin."

"I see."

With these words, Guo Tao merely nodded slightly, seemingly having roughly understood what all this was about.

"However, having just this substance doesn't explain much; there must be another associated item used in conjunction with it."

"What? What supporting item?"

"If it can make the skin regrow, then there should certainly be another paste-like substance that completely destroys the skin. Only then, when the two work together, can they form a complete set of medication."

"I understand, one manages destruction, the other facilitates renewed growth, is that what you mean?"

"Exactly, that's the idea. Actually, I've researched some secret techniques before, among which a Disguise Technique I've come across mentions this point; these two salves in the Disguise Technique play a crucial role throughout the process."

"So, you mean that if the two salves exist simultaneously, then it must be about researching the Disguise Technique, can I understand it that way?"

"If both salves exist at the same time, it's certainly the case. Also, what is this box?"

"I felt it was very strange, so I specially took this box over."

While talking, he took the box from Anying's hands, gave it another careful look, then gently nodded.

"I understand, this is the other destructive substance I mentioned, the combination of these two results in new skin."