Wang Ping took out a small shovel and hung some debris from the metal wall.

"It feels very smooth to the touch, melts when it is warm to the hand, the smell is damp, and the color is very similar to the surrounding rocks. Wang Ping rubbed his fingers against the metal chips.

"How's it going, what did you find?" Chang Xiaoting asked.

"It's dissolving iron!" Wang Ping raised his head and smiled confidently.

"What is dissolved iron?" Gu Yige grabbed some metal powder from the wall, feeling a little cold, looking at the metal walls around him, there was always a coldness in his heart.

"Dissolved iron is a common metal, often encountered in the mountains, this kind of dissolved iron can perfectly fuse the rocks around the copper, can absorb the characteristics of the rocks, whether it is color, or texture, it becomes very similar to the rocks, if you do not carefully identify, it is difficult to find. Wang Ping said.

"What does dissolving iron do?" asked Gu Yige.

Wang Ping pinched the metal chips in his hand, sprinkled them on the ground, and said with a smile: "Dissolved iron is a kind of scrap metal, whether it is from its own hardness or various attributes, it has no value for refining soldiers, if you must say that there are any characteristics, it is in the depths of the mountain range, it becomes the same as a rock." ”

"Is there a way to break through the metal and get out of here. Chang Xiaoting said.

"Of course there is, there are no metal veins, can we be disciples of the mine prison!" Wang Ping confidently walked to the front of the dissolved iron, took out a small bag from his arms, and then took out some white powder from it.

Chang Wu came to Wang Ping's side and asked curiously, "What is this?"

"Gold dust. Wang Ping said.

"Gold powder is a necessary thing for our mine prison disciples, and when we open a mine, we often encounter some useless scrap metal such as dissolved iron, and we will use gold powder to melt these scrap metals. Wang Ping said, smearing some of the white powder in his hand on the gold dissolved iron.

Chang Wu saw that Wang Ping only smeared a little gold powder, and pouted: "It's really stingy, just smeared such a little powder, what use can it be, I don't know how much of these dissolving irons." ”

Wang Ping smiled mysteriously: "Whether it's useful or not, you'll know later." ”

I saw that those white powders were smeared on the dissolved iron, and they were absorbed in a blink of an eye, and then at a speed visible to the naked eye, these dissolved irons actually began to melt into liquid, and these melted liquids, after encountering the surrounding dissolved iron, melted more dissolved iron, turning into more liquid.

When everyone saw such a scene, they all showed surprised expressions.

Wang Ping was very satisfied with everyone's expressions, and said with a smile: "Dissolved iron, a scrap metal, once it encounters gold powder, it will turn into liquid, and the liquid it becomes will melt more dissolved iron, no matter how much dissolved iron there is, it will be melted." Otherwise, our disciples in the mine prison will not be able to bring enough gold dust. ”

"As long as all this dissolved iron is dissolved, the road ahead will be open. ”

When everyone heard Wang Ping's words, their faces showed relaxed expressions.

Gu Yige looked at the liquid of melted dissolved iron under his feet, and for some reason, he felt the temperature around his arms drop slightly, and it was cold.

"Do you feel the temperature around you drop a bit?" Gu Yige asked Han Yue.

"No, why do you ask?"

"I felt a little cold around and the temperature seemed to be dropping. Gu Yige frowned.

"Is it your delusion, none of us feel cold. Han Yue said.

Gu Yige pursed his lips and didn't speak again, in this situation of unknown future, it's always good to be more careful. It's just that he doesn't know much about the mineral veins, and Wang Ping is very confident, although he feels a little cold around his arm, but it doesn't have much effect.

At this time, Wang Ping opened the way in front of him, and said: "Do you know that there is a legend about dissolving iron!"

"What legend?" Chang Xiaoting asked.

"I've read in an old book that dissolved iron wasn't originally called dissolved iron, but sleeping stones. Wang Ping said.

"Why is it called the Sleeping Stone?"

"It is said that dissolved iron can produce a strong low temperature, freeze the human body, and put people in a state of hibernation like animals, so it is called the sleeping stone. Wang Ping said slowly.

"Then why is it called the Sleeping Stone now?" Chang Wu asked.

"Because this is a legend, only the classics have a simple record, but in fact, for hundreds of years, there has been a lot of dissolved iron, and in the dark metal prison, no one has ever found that dissolved iron can produce low temperatures. Wang Ping said with a smile, as if to show his knowledge of metal.

So, over time, the name Dissolved Iron was born, and the name of the Sleeping Stone has been forgotten. ”

At this time, the dissolved iron melted a lot, and everyone's feet were full of metal liquid.

The stone wall that dissolved the iron was also melted open for a long passage for a day, and everyone walked in.

The strange feeling in Gu Yige's heart lingered, especially Wang Ping said that dissolved iron used to be called the Sleeping Stone, which can produce extremely low temperatures.

And he felt a little cold around his arm, and hurriedly began to check his body to see if there was anything wrong.

When he checked his arms, his eyes opened suddenly, and he didn't know when, there was a rush of heat coming out of his arms.

He absorbed the magma heat in the magma sea, and after repairing the cracks in the bones of his arms, this heat was stored in his arms, but the appearance of this heat must be controlled by him before it can be emitted.

However, at this time, he did not control the heat emitted by his arm, but the arm emitted heat on its own.

Why is this happening, my body is uncontrollable, there is a change in myself, what happened, and when did this change occur.

Gu Yige hurriedly controlled his arm and no longer emitted heat.

When the heat in his arm was withdrawn, Gu Yige's face showed a strange performance, and he couldn't feel the slightest chill around him.

"Is it ......?"

He immediately controlled his arm and emitted heat again, and sure enough, the cool air around him reappeared.

A bright light flashed in his mind, it was not that other people were dull and couldn't feel the cool air around him, nor that he was keen, but because of the heat in his arm, because of the heat in his arm, he was sensitive to the cool air around him, and he was more sensitive than others, so he could find that there was cool air around him.

Gu Yige was about to be born to remind everyone to pay attention to the situation around them.

I don't want to, the dissolved iron liquid under my feet suddenly emitted a large amount of cold air, and in an instant, the surrounding temperature dropped to an extremely low level, emitting a large amount of cold air, and white gas rose around everyone.

"What happened, how did it get so cold. "There is no need to be reminded now, and everyone realizes that something is wrong.

"Bastard, can dissolved iron really turn into a sleeping stone? Wang Ping shouted loudly, no longer having the confidence he had just now.