Heidi drove the mecha around, they had already reached the middle of the second floor, and they didn't see a single alien, which was very weird.

At this moment, there was a sudden click above her head and heavy isolation doors fell, Heidi's pilot mecha dodged and fell down the isolation door, and when she reacted, the isolation doors that fell around her had isolated the entire second-floor area into small squares.

Heidi said in the communication channel, "Watch out for sneak attacks. ”

There was no response in the communication channel, only the sound of electricity.

Seeing that there was no response, Heidi immediately understood what was going on and was disturbed.

Sitting on the side, Chitaki said, "These things that seem to be facing the isolation door should be closed to cut off the communication between the equipment, and the original function should be to isolate radiation pollution and danger, so it will cause the communication to be cut off." ”

Heidi drove the mecha to pull out the alloy titanium knife, and skillfully operated it with both hands, the whole mecha jumped up, and the alloy titanium knife in his hand pierced into a closed door in front of him.

Wow, sparks flew everywhere, and a slender scorch mark was cut out on the entire closed door, but it was a pity that it was very shallow.

Heidi stopped and looked at the scorch, her expression was a little ugly, the effect of the alloy titanium knife was not ideal, if you use heavy weapons, it is estimated that most of the impact of the explosion in such a narrow space will be fed back to you, and the effect may not be much better.

"Do you have any good ideas?" Heidi turned her head to look at Chitaki.

Qianlong said seriously, "This is assembled when the Mero Empire built this base, the starting point is to save lives, so there will be no danger for the time being, of course, it is only temporary, if the other party is smart enough, open the closed doors one by one, and clear us little by little, the only solution is to find the main switch or the line of the switch, and raise these protective doors." ”

Heidi fell silent and said, "We don't know where the switch is, where the wiring is, and more importantly, we can't get out at all." ”

Chitaki said calmly, "Yes." ”

Heidi looked at Chitaki in some surprise, and the young man in front of her seemed to give her too much shock.

"What way." Although Heidi felt that it was unlikely that there would be a way, she still asked subconsciously.

"Open the cockpit and let's go down." Chitaki said seriously.

Heidi looked into Chitaki's eyes, and after confirming that the young man in front of her was not joking, she unfastened the fixtures on her body and opened the cockpit.

Chitaki climbed down with Heidi, Chitaki walked to an isolation door, touched the isolation door, it was very thick, I don't know what material it was made of.

Heidi didn't ask Chitaki what to do, but stood by and watched.

At this time, Chitaki pulled out the star mark and stabbed a sword at the isolation door, which shocked Heidi A scene appeared, and the entire star mark directly submerged into the isolation door.

"What is this?"

Chitaki uses the star mark to draw a circle on the isolation door, and then pulls out the star mark.

Reaching out and pressing on the cut isolation door, Heidi also reached out to help, pushing the cut round isolation door out and falling to the ground.

It's a lot heavier than you think.

Chitaki glanced inside through the round hole, confirmed that there was no danger, and climbed over.

Heidi also crawled behind Chitaki as well.

Phantaki kept giving hints in Chitaki at this time, "Follow this route to resist the edge of the second floor, there are lines in the walls, cut through the metal walls, pull out the lines in it, and open all the closed doors." ”

"Can you crack it?"

"Yes." Phantom replied.

In Heidi's eyes, Chitaki is very skillful in breaking open protective doors, judging from the direction, the direction of breaking these protective doors is not to his own teammates, but to the edge.

"Could it be that this young man named Chitaki is really a mechanical genius?" Heidi was also in a trance.

After a long time, Chitaki broke open a protective door and came to the edge, where the front view was a very smooth metal wall.

Heidi looked at the smooth metal walls, there were no signs at all, but she thought that what Chitaki said should be true, because he had found the control line for the passage gate on the first floor without warning.

Chitaki took a few steps back, rushed forward, and jumped, the star mark in his hand stuck to the metal wall, making a cut.

Then he did this several times, making a cut in the metal wall, revealing the lines inside, and Chitaki jumped and ripped off one of the black lines.

Chitaki pretended to insert the bare line into the bracelet, but in fact, he let the line touch his skin.

Then there was a loud rumbling bang, and the isolation doors around it began to rise.

When the isolation door was raised, the pupils of Chitaki eyes shrank, and the illusion gave an alarm.

"Discovery of the Prolos biological response."

Heidi also saw that there were aliens everywhere at this time, those aliens had already approached his team members at this time, and several team members had already been dismembered, but suddenly the isolation doors were all raised, and the aliens were also a little blindfolded, and they all turned their heads to look at Chitaki and Heidi.

Heidi's bracelet rang out with Macassa's anxious voice.

"Captain, run!"

I saw that all those aliens rushed towards Heidi and Chitaki like crazy.

Chitaki also had a numb scalp for a moment, and directly reached out to grab Heidi's hand and pull it.

"Come with me."

Heidi was dragged over by Chitaki and immediately reacted and followed behind Chitaki.

The aliens were running at such speed that it wouldn't be long before they appeared in front of them.

Heidi also felt a little desperate and couldn't escape at all.

Chitaki suddenly stopped, and raised the star mark in his hand to plunge into the metal wall, breaking a gap to reveal a pipe gap.

"Get in." Chitaki said.

Heidi and Chitaki got in, and the diameter of the pipe mouth was about one meter and a half, and the two of them bent their bodies and climbed in.

A hunter alien slammed its mouth directly into the mouth of the pipe, sticking out its slender tongue, as if trying to reach the delicious prey.

Heidi and Chitaki didn't look back, and sped up to crawl inside.

Makassar spoke in the communication channel, "Everyone is now following my command and going to the intersection of the third floor. ”

"It's the vice-captain."

The alien prey that rushed over ran away, and they all turned their heads to look at the mechs.

Chitaki and Heidi were walking in the passage, Heidi stopped, she faintly heard an explosion, it should be her own team members and the alien fight.

Chitaki saw Heidi stop and said, "We can't help much now, we don't have a chance to return to the mecha at all, and going out will only be a burden." ”

"I know." Heidi said calmly.

"This passage will take us to the third level, where if we're lucky enough, we should be able to meet them?" Chitaki continued.

"You're familiar with this place." Heidi looked at Chitaki.