What is in the Earth's core, the core of the earth, and what it is made of, has always been a highly controversial topic in the academic community.

Some scholars say that the earth's core is composed of high-density iron and nickel, while others put forward the theory of nuclear fusion, arguing that the earth's core is actually a huge geomagnetic field that triggers a series of natural chain reactions.

However, no matter what the theory is, no matter how wise a scholar is, no one can imagine that at this moment, in the deepest part of the earth's core, which human beings have never touched, there is actually a mysterious flying machine docked!

This unknown aircraft is very small and streamlined, like a swordfish that is a long swordfish, and no one knows how it reached the deepest part of the earth's core, and they can see that its body crackles, and from time to time orange-red energy flames burst out, and it is rapidly disintegrating at a speed visible to the naked eye.

Eventually, a red-gold ball rolled out of the completely disintegrated flying machine, like a living thing, and suddenly stretched out countless demonic blood-red tentacles, and pierced through the surrounding shell walls, quickly taking root.

At first, the blood-red tentacles were incomparably slender, like hair, but soon, the blood-red tentacles became thicker and thicker, and radiated in all directions with the earth's core as the center, rapidly extending and splitting, forming a larger and larger demonic blood network.

"The Hunting Ground Cataclysm Seed has successfully arrived on the target planet, and after scanning and detection, this life resource star is suitable for activating the Hunting Ground Cataclysm Seed. ”

"On the first day of the log, the Hunting Ground Cataclysm Seed has been successfully activated, and the pre-set program has begun to load, with a countdown of 3 ...... 2...... 1......”

"There is an unknown error in the loading program, the pre-set program has been tampered with and cannot be repaired, and the main system needs to be stopped as soon as possible. ”

"Dididi! The operation of the main system has failed, the cataclysmic seeds of the hunting ground have changed unexpectedly, the danger level has been assessed to SSS level, the pan-universe joint convention has been violated, the destruction procedure has been initiated, and the countdown has begun!"

“3......”

“2......”

I saw that the red gold weird ball was dripping, I don't know what happened, I kept reporting errors, and directly started the destruction procedure, wanting to destroy the hunting ground catastrophic seed with a danger factor as high as SSS, but before it was actually put into practice, in the last second of the countdown, it suddenly disintegrated.

All pre-programmed programs, and even the host system, are scrapped and come to naught.

In the end, I saw an extremely evil blood-red eyeball exposed, manipulating countless blood-red tentacles that were still growing and splitting rapidly, and began a real invasion of the earth.

The previous cataclysm was just an appetizer for it.

......

Zhang Yu didn't know about the terrifying changes that had taken place in the deepest part of the earth's core, and at this moment he had already arrived in front of the seventh dormitory building.

Zhang Yu's eyes flickered slightly, holding the flame battle knife in his hand, and walked in along the gate of a unit.

Originally, Zhang Yu didn't plan to enter the No. 7 dormitory building, after all, if he took Xiao Hua and the three of them, the goal was too big, and once something dangerous happened, it would be difficult for all the people to evacuate, but now that he was alone, his mobility flexibility was greatly increased, so he could try to explore.

After walking in, the strong smell of blood came to my face, and I saw that the corridor on the first floor of the dormitory building was scattered with shocking bloodstains, and stumps and corpses were everywhere.

Calculate the time, when the cataclysm broke out yesterday, it was noon, and many people were taking a lunch break in the dormitory, or even sleeping, which also caused many people to fail to discover the changes in the outside world at the first time, and by the time they reacted and wanted to escape, it was already too late.

Therefore, after the outbreak of the apocalyptic catastrophe, the student dormitory building is the real hardest hit area, and the number of casualties is also the largest.

Looking at the stumps and corpses all over the ground, the pungent and even fishy smell entered the nose, ordinary people couldn't stand it for a long time, but Zhang Yu was expressionless, his expression was indifferent, he kicked away a piece of corpse blocking the road at will, and stretched out his hand to push open the door of the 1001 dormitory.

"Whoosh!"

At the moment when the door opened, a black shadow that was extremely fast suddenly pounced on Zhang Yu, but Zhang Yu seemed to have expected this for a long time, or it was a precaution, and immediately turned sideways while opening the door, narrowly dodging the past.

After landing on the ground, I saw that the black shadow was a hideous mouse, not much larger than an ordinary mouse, but the fur around it was a strange blood red, and the eyes were also red, full of bloodthirsty.

This mutant rat was eating a half-cut student corpse on the bed just now, and after being disturbed by Zhang Yu who pushed the door, he couldn't be angry, and immediately aimed his attack at Zhang Yu.

"Whoosh!"

After missing the blow, the mutant rat catapulted again, jumped up, opened its mouth that was still dripping blood, and bit Zhang Yu's throat fiercely.

Zhang Yu smiled coldly, reacted very quickly, and directly used the back of the flame war knife to block the vital part of his throat, blocking the ferocious blow of the mutant rat, and taking advantage of the great opportunity of being hit hard and flying upside down, he raised his arm and punched out.

This punch, Zhang Yu had already premeditated, if it could be hit, with Zhang Yu's current strength, he could completely kill the mutant mouse, but at this moment, the mutant rat twisted his body violently in mid-air, and he actually changed direction and dodged Zhang Yu's punch.

Not only that, but after landing on the ground, the mutant rat immediately jumped up, turned into a blurred black shadow, and quickly attacked Zhang Yu.

Zhang Yu took a step back and withdrew from the 1001 dormitory, it was obviously very stupid to fight an extremely dexterous mutant rat in the narrow space of the dormitory building, it was better to fight the corridor of the dormitory building.

Zhang Yu waved the flame war knife in his hand, but every time he slashed a phantom, it was difficult to kill the extremely fast mutant rat, but he was very embarrassed by the mutant rat that launched a surprise attack from various tricky angles.

After a fierce battle, Zhang Yu's brows couldn't help frowning slightly, if it was just a mutant mouse, the key was that the battle movement was too big, it was likely to attract the attention of other mutant monsters, and if there were a few mutant rats or mutant cockroaches, then he would be in big trouble.

Thinking of this, a look of determination flashed in Zhang Yu's eyes, and he deliberately revealed a flaw, planning to fight for his own injury, but also to fight quickly, and kill the mutant rat first.

But at this moment, a throwing knife roared through the air, and suddenly flew out of a dark corner, bringing up a blue phantom, directly nailing the mutant rat that rose into the air to the wall, and completely froze it.