The moment the black stripe came into contact with the red thread, the black stripe was directly cut silently, and the red metal liquid on the fracture surface told them that the red thread could cut them into pieces of meat the moment it touched them.

Jiang Yihuan subconsciously withdrew his fingers that stopped in mid-air, fortunately Su Fan stopped them in time, otherwise they would have become nine fingers!

"This ...... How do you get over?" Jiang Yihuan said with some fear, "Forget it......

"Being able to use this kind of magic circle to protect it means that the things in it must be very important, maybe there will be a key in it!" Su Fan didn't want to give up, although this magic circle had no aura fluctuations like the previous things, but according to the general situation, as long as you find the eye of the formation, you can break the magic circle.

But where is the eye?

Ren is Su Fan's eyes widened and the other three people searched back and forth, but they still didn't get anything.

Although he didn't find the formation eye, Su Fan looked at those red lines, and he had a ghost idea in his heart.

Since these red lines come from the walls on both sides, then ...... Wouldn't it be nice to smash the wall?

As he spoke, Su Fan kicked and smashed the two walls at the edge in the surprised eyes of everyone, and with a tremor and flashes of lightning, those red lines also disappeared.

"I'll ...... Your method is rough enough, I should say that it is worthy of you!" Jiang Yihuan gave a thumbs up to Su Fan and said.

Su Fan was still not at ease, so he asked Lu Xi to test it again with a stick, this time proving that those red lines had completely disappeared, and then everyone passed through the corridor smoothly.

On the other side of the corridor, there were many rooms, but those rooms could not be opened by ordinary methods, and Su Fan had no choice but to believe in a miracle of great strength, one punch at a time, and with a sharp and piercing sound, Su Fan and the others entered those rooms.

Some rooms were full of classics similar to bamboo slips, Su Fan judged that this should be their former library pavilion, but they couldn't recognize the meaning of the words in it at all, and Su Fan looked at it, and found a lot of different characters in these classics, it seems that there are many classics of different civilizations.

"That...... Do you want us to take it out and let others study it?" Jiang Yihuan was a little reluctant to let these books look very mysterious.

"I think hanging, these words have not been recorded at all before, even if they are taken out, no one will know them......" Su Fan shook his head, in his memory, he could even recognize the ancient characters, only this strange square text and tadpole-like words he had no impression at all, if he didn't even know him, then basically no one could recognize these words.

As for the storage in the other rooms, there are even some strange things, not only colorful liquids, but also strange-looking magic weapons, some of which are the same as the offensive magic weapons on the puppets outside.

Su Fan and the others also studied for a long time before they understood the use of these magic weapons.

"There is even this kind of refining and assembling method, although there is no spirit pattern, but it can still rely on the unique combination of strength to achieve explosive ......power," Lu Xi sighed and said.

As Su Fan and the others explored, they soon came to the last room, the door of this room was much harder than the previous door, and even Su Fan had spent a lot of effort to enter it.

The moment he opened this flash door, when the smoke and dust cleared, everything in front of him made Su Fan also full of shock.

There were sparkling lights in front of him, accompanied by the sound of dripping.

In front of them was a huge screen with images of all the areas outside, and even metal golems that looked like ants.

The most amazing thing is that this picture is still dynamic, like a powerful retrospective power, showing the outside scene clearly.

"There are a lot of things I want to complain about, but I don't know where to start talking about it first......" Jiang Yihuan, who grew up and looked at it for a long time, said.

"Don't force it, I've never seen this kind of scene, but according to my analysis, this place should be the hub of this ancient city, and if you guess correctly, even the puppets outside are controlled here. Su Fan analyzed.

"What should these be called?formations?or what?," Lu Xi said.

"You can call these things ...... Central system. At this moment, a strange voice sounded.

Su Fan's hair was cold, and he hurriedly looked back and found that a little girl with blue light appeared on the table in the middle of the room.

"Hell!!!" Jiang Yihuan shouted as he hid behind Lu Xi.

Lu Xi clenched the black-striped stick in his hand, and as soon as the little girl in front of him made any moves, Lu Xi was ready to thunder.

Su Fan's heart was also very shocked, this person's appearance did not have the slightest warning, there was not the slightest anger in his body, aura, not even demonic energy, if he didn't see it with his own eyes, just by closing his eyes, Su Fan wouldn't be able to perceive this thing in front of him at all.

"Who are you!" Su Fan asked sharply.

"Don't be so excited, I'm not malicious, I'm just a projection. The little girl in front of her said slowly in a voice that Su Fan could understand.

"What do you mean?" Su Fan frowned, a little unaware of what she meant.

"In terms of what you can understand, I'm just an illusory being, you can see but you can't touch it. The little girl explained.

Su Fan was suspicious, and stretched out his hand to touch it, but his hand really penetrated through the little girl's body without hindrance.

"This ......" Su Fan withdrew his hand, looked at the delicate-looking little girl in front of him, and asked, "What kind of place is this?"

If you want to know the answer, you put your hand on it. As he spoke, a pedal-like thing rose up on the table and stood in front of Su Fan.

Although they hesitated, Su Fan and the others still put their hands on it.

At that moment, it was as if they had been struck by lightning, but correspondingly, a flood of information and knowledge poured into their minds.

"It's using your brain waves to transmit information, and then you should be able to understand what this is. The little girl on the side was smiling.

"Hiss......" suddenly a large amount of information poured into their minds, some of them were painful, and their eyes were dark, but when they digested the information transmitted to them from the pedal on the table, they were all a little sluggish, even a little incredible.

"'Technology'...... Civilization...... digesting the new knowledge in his mind, whether it was Su Fan Luoling or Jiang Yihuan and Lu Xi, they all became interested in the bright knowledge and information in their minds.

"You should be able to read the words from above!" said the little girl's projection with a smile.

"I can probably understand, it's hard to believe that there is such a civilization!" Su Fan shook his head slightly, regardless of whether it was true or not, this sense of reality in his mind made him feel as if he had experienced it himself, and the other three were the same.

"In the vast world, each world has different possibilities, although the people of our world do not know how to practice, but the exploration of the world has not changed, in a sense, technology can come to the end of the world earlier than you, but it can never reach the real end. The little girl said.

"But why are you telling us this?" Su Fan was a little strange.

"The energy in the laboratory is running out soon, and it contains most of the research results of scientific and technological civilization, and I don't want to disappear into history because of the exhaustion of energy, and I have this intention when I know about your appearance. The little girl said.

"So, those mass-produced robots outside were also sent by you to force us to come here?" Su Fan reluctantly wanted to confirm.

The same can be said. The little girl didn't deny it.

"Although you are hateful, I still thank you for giving us such precious knowledge. Su Fan said gratefully.

"I just don't want the crystallization of human civilization in our world to disappear, and this is also a little selfish on my part. The little girl shook her head and smiled a little humanely.

"We have one last question we want to ask. Su Fan said.

"Just ask, I'm running out of time. The little girl did not refuse.

"Where is the key?" Su Fan still hadn't forgotten what their purpose was.

"Key?" the little girl was a little confused, "I don't have the information in my system that you mentioned about turning off the key again. ”

"I thought you'd know. Jiang Yihuan was also a little lost.

"But I have one last gift for you. The little girl smiled, and with a wave of her hand, the screen of the mainframe computer in the room showed maps of the various areas!

"This!" Su Fan's breath was short, and his heart was shocked, this was not only the map of the abandoned city here, but even the map of other areas on the first floor of the Void Palace!

And the depiction is so detailed that you can see a few trees anywhere!

The other three were also overjoyed, they knew how precious such a map was in this small world full of unknowns!

"This map is based on small drones to reconnoiter over the past few hundred years, and it has been a long time, and there may be some errors in some places, but overall it is a relatively complete map. "My energy has been depleted, and I will fall asleep in half a minute, and the countdown will begin, twenty-eight...... Twenty-Seven......"

"Can you tell me your name?" asked Su Fan.

"I only have a serial number, no name, twenty ...... Nineteen ......"

"And what's your serial number?"

"2158374 SARA, III...... Two...... One...... WITH A ......LOW NOISE, SARA DISAPPEARED INTO DARKNESS.

Somehow, Su Fan actually felt a little lost.

"So in the end, I still didn't find the key...... Jiang Yihuan said regretfully.

"Although we don't have a key, we have a map!" Su Fan shook his head, no longer thinking about this, and then said with a smile at Jiang Yihuan, but after saying this, he felt that something was wrong, and his smile gradually froze.

"The computer is all off, where can you find the map!" Jiang Yihuan yelled.