- At the end of the long, winding corridor is a bottomless darkness.

Merging with the night outside the window, in the boundless darkness, the huge silhouette of a beast slowly emerged.

The noise of the surrounding environment disappeared in an instant, and only the footsteps of the monsters were slowly approaching.

Its shadow fell on the nearby wall, distorting and distorting in the dim light, and it seemed especially large for a while.

"It's coming."

Yan Jingxing sensed the tension in his heart, but the corners of his mouth were unconsciously raised, revealing an excited expression.

"Sure enough, it came here for hunting. After the Hairless Ones were defeated by our side first, it couldn't wait. ”

The monster that was chased by them before now took the initiative to come to the door, proving that his guess and strategy were correct.

“…… It seems that this beast is not afraid of us. ”

Xie Yuzhi said softly.

"The reason why he avoided us just now was because he was cunning, or he simply wanted to tease us."

"That sounds infuriating." Ji Chunzao muttered on the side, lingering on the fact that he was tricked by a dog.

……

Yan Jingxing was fully prepared and ready for battle.

As a warrior, he naturally stands at the forefront.

When this monster came out of the darkness and appeared in front of the young people in its full form, everyone's breathing invariably stopped slightly.

Dr. Sun remembers it 10 years ago, describing it as "a dog with black fur and the size of a calf with two mouths." ”

This already sounded quite scary, but after actually seeing what it looked like, Yan Jingxing felt that he was describing it too conservatively.

"It's not the same as the description. Is it because ten years have passed, and it has developed again? ”

Beneath the fluffy black fur is the outline of bulging muscles, and even blood-red lines can be seen in the uncovered places.

It was a beast that was more than one meter tall, nearly three meters long, and weighed more than two hundred kilograms, with a thick skull, a strong jaw, and a pupil the size of a copper bell.

It is not quite correct to say that it is a wolf or a dog, because there is no such strong and large canine creature on Earth today, it is like a fierce beast from ancient times, and it looks more like an adult male lion patrolling the grasslands.

- Moreover, it has not two mouths at all!

“…… There are two heads, what kind of creature is this? ”

A head grew out of the black dog's neck, like a misshapen sarcoma, but with distinct eyes, nose and mouth, and this head grinned at them along with the black dog's head.

Just when Yan Jingxing and the others were shocked, the two-headed black dog suddenly stopped moving forward.

Although this monster was not afraid of them, it obviously sensed that these human children were not ordinary people, otherwise they would not have deliberately guided them to consume physical strength.

The two-headed black dog showed a threatening expression, and at the same time kept a distance of seven to eight meters from the boys, and walked back and forth in the middle of the corridor, a pair of beast eyes staring at him with a fierce look.

Taking advantage of this opportunity, Yan Jingxing immediately asked the girl behind him for information.

"Haruzao, can you 'see' anything about this monster? Anything goes. ”

Xie Yuzhi and Ji Chunzao did not have the ability to fight head-on, so they had already retreated to the corridor at this time, preventing patients or medical staff from approaching here, while they were nervously watching the situation of one person and one dog facing each other.

"Okay, I'm sorting out ......"

Yan Jingxing didn't turn around, only heard the girl's answer from behind, her voice trembled slightly due to nervousness, but probably because he was in the way, the emotion in the words was not afraid.

"It's called the 'Splitter', and it's a parasite."

"Parasitism?" Yan Jingxing was stunned for a moment, and looked at the vicious-looking two-headed black dog not far away, "It? ”

With this appearance and this shape, it can definitely be called five big and three thick, who are you going to parasitize?

"No, this dog is in a parasitic state."

Ji Chunzao said. After hearing this, Xie Yuzhi beside her seemed to understand.

"The Splitter...... Is this name a parasite similar to Schizocephalus? Much like a hairless person? ”

"Hmm. According to what I know in my head, the split-headed are the natural predators of the hairless, and both are parasites. The difference between them is that hairless people are constantly changing hosts and survive by devouring their brains; The Splitterhead is a relatively 'gentler' parasitic life, and once a host is selected, it will not replace the target until the host dies. ”

"Although the name is this one, it does not really harm the host's brain, but creates a new 'brain' in the host's body, sharing the nutrients provided by the internal circulation with the original brain, and this parasitism is reflected in the appearance, that is, the organism hosted by the split-head person will slowly grow a second head."

Ji Chunzao's tone when he spoke was like reciting the words on an illustrated book of alien creatures.

“…… The life forms that are housed by the Split-Head will become far superior to their counterparts in terms of physique, intelligence, and even the length of their life cycles, and will even possess special sensory and reflex abilities......"

Compared with the "hairless", the weight of the "split-headed" in the knowledge mastered by the alien sacrifice is obviously heavier, which shows that in the eyes of the aliens, the existence value of the latter is higher.

The reason for this is easy to imagine, as compared to the hairless ones, who only rudely destroy and rely on constantly changing hosts for food, the split-headed ones are not mere pests, they have chosen the path of coexistence with their hosts.

Even, it can also promote the strengthening of the living body, compared to the cost of providing nutrients for a brain that does not belong to itself, which seems "insignificant" at some times, the living form that is hosted is undoubtedly developing in a higher way-

As long as you don't mind having a second head on your body.

According to the explorer's diary, the civilization developed by the aliens was based on highly developed biotechnology, and it was not surprising that they would be interested in the strange life of the "Splitter".

“…… I'm afraid that a split-headed person who came to this planet one day chose a black dog on Earth as a host, and developed to this extent ten years later. ”

Xie Yuzhi said in a low voice.

"It's easy to understand that hairlessers, who also rely on the brains of organisms as a source of nutrients, are the tastiest and most valuable prey for split-headed creatures...... Therefore, I am afraid that it will not give up on this group of patients easily. ”

Miss Xie finally couldn't hold back the worry in her heart, and raised her voice to remind:

"You have to be careful, Jing Xing. On the premise that you don't get hurt, run away as soon as you encounter danger! ”

Yan Jingxing didn't turn around, and waved his hand at the two girls hiding behind him in response.

The smile that appeared on the corner of the boy's mouth had not disappeared since just now.

……

Okay, what's next?

Yan Jingxing carefully and carefully observed the "split-headed dog" every move, and he noticed that the monster's pace of pacing in place in circles had changed: the intimidation element in the tentative actions was getting higher and higher, and the impatience and brutality shown in the grinning teeth were becoming more and more obvious.

It looked like the Split-Headed Dog was about to lose his hold and make his first tentative attack on him.

However, compared to the monster on the other side, what really surprised Yan Jingxing was actually himself.

He didn't turn on the warrior instinct, and the emotions in his heart were not suppressed by absolute reason, so Yan Jingxing could clearly feel the emotions surging in his heart at this moment:

There is fear, there is nervousness, but what really occupies most of it is a joy full of tension and excitement -

He was looking forward to the fight.

At this moment, Yan Jingxing deeply realized that he was indeed different.

A series of adventures brought him not only superpowers themselves, but also subtly stimulated the innate adventure and aggressiveness factor in his body, which was enough to drive him to overcome the fear of facing monsters as he does now.

Including yesterday's incident, if it was Yan Jingxing before, it would be impossible to agree to fight with an adult in the ring.

He used to be a good student, listening to the words of teachers and parents, trying to be a well-behaved child, and never thought about who to fight with; And now he has begun to get used to fighting, and thinks that this feeling is not annoying, but rather annoying......

Blood boil.

Yan Jingxing moved his body, licked his dry lips, and took out a few knives, ready to turn on his abilities at any time.

The words that Xie Yuzhi said to him last night played a decisive role-

"Don't be afraid to use your own weapons. It's really not good, and I and Chunzao will be watching you. ”

Miss Xie has said it to this extent, what else am I afraid of?

"Whew."

There was a sound of wind.

Yan Jingxing's pupils contracted slightly, and while constricting his thinking, he activated the warrior's instinct, and his eyes became as deep as deep mountains and ancient wells;

At the same time, the split-headed dog had already jumped into the air, its jumping ability was far beyond that of ordinary beasts, the action of jumping up just now, Yan Jingxing in a normal state did not notice it at all, and did not react until he heard the sound, in other words, it was beyond the dynamic vision and reaction power of ordinary people.

And this was only a blink of an eye's hesitation, enough to send the monster nearly half the distance from the air; The remaining interval of three or four meters will be quickly closed in the remaining time of no more than half a breath.

If he was really an ordinary person, what he felt throughout the whole process was probably that he didn't see anything clearly, and Yihua was thrown to the ground in front of him, and he didn't have time to make any resistance.

However, Yan Jingxing has already opened his "eyes".

The flow of time slowed down in an instant, and the slow-motion world was reflected on the surface of his pupils.

The slightly rotating lens receives the image information, projects the information carried by the light onto the retinal nerve at the bottom of the eyeball, and then transmits the integrated information to the brain.

The high-speed brain analyzes the current situation and thinks about strategies with astonishing acumenity, and transmits instructions through the spinal cord, a medium that reads information and outputs signals, and the spinal cord radiates the motor signals to the whole body through the spinal nerves between the muscles, skin, internal organs, and other receptors to the spine.

Everything was building up power in him at an astonishingly terrifying rate.

Yan Jingxing almost adjusted the force posture at the moment when the split-headed dog that pounced in mid-air began to fall under the action of gravity, and different muscle blocks accompanied the direction of the force, constantly pulling up the contours from the shoulders to the arms, and finally concentrated the strength of the whole body at the point where the fingertips flew out with super high efficiency.

The knife pierced the air.

At this distance, there is no chance that he will miss a throw.

"Oh......?"

Even at this moment, the conflict has already occurred, and the two sides of the head-to-head confrontation are still engaged in a constant game.

For example, now, the Split-headed Dog's reaction exceeded Yan Jingxing's expectations: even in the state of "being in mid-air", it can still dodge the flying knife by fine-tuning its posture.

But......

"It's useless."

The second and third throwing knives had already arced and were thrown at the Split-Headed Dog's eye and the other head.

Whether it is the speed of the flying knife or the bite speed of the split-headed dog, it is already extremely fast, and ordinary people can't react at all; But in the eyes of Yan Jingxing, who is thinking at high speed, their trajectories are clearly discernible in the "deceleration" of the time flow.

"As long as it's impossible to be on the same level of reflexes as me, it's impossible to see through my actions."

Yan Jingxing is full of confidence in this.

The only thing he cared about was whether the fist he swung with his own strength could cause effective damage to the enemy, so he specially found the "Flying Knife", a weapon that suited him.

"Smack, smack!"

The split-headed dog landed on the ground in some embarrassment, sliding some distance on the floor, and the other head and leg already had bleeding wounds.

The wound is not deep, and it needs to be repaired!

Yan Jingxing quickly took out the remaining two flying knives, one of which flew towards the monster's vital point again, and the remaining one was held in his hand by him, and at the same time, the whole person pounced.

It can be described as "a master of art is bold", now he has no fear, he bows his head slightly to avoid the claws of the split-headed dog, bullies into the inner circle, bows his waist and back, accumulates strength like a spring, and can jump on the spot at any time.

Next, it's my turn to attack!

However, the split-headed dog's reaction after the injury caught people off guard: it turned its head and lunged towards a nearby window.

"Bang!"

The black dog jumped on the windowsill and rushed out through the glass window, the glittering fragments shimmering like a rainbow bridge after rain in the dim night sky.

In fact, the wound left by Yan Jingxing was not deep, but it still chose to escape at the first time without hesitation.

Yan Jingxing, who was in the state of activating instinct, also did not hesitate or be confused, and immediately jumped on the windowsill after retrieving the flying knife, grabbed his collar with his hand to cover his face, and jumped out of the window in front of the debris.

“……”

It wasn't until the figures of a man and a beast all disappeared into the vast night that the shattered glass shards happened to be sprinkled on the ground with a crisp echo.

Only Ji Chunzao and Xie Yuzhi in the corner were left looking at each other.

"Chase!"

The two of them finally reacted at this time, and chased along the corridor in the direction of Yan Jingxing and the split-headed dog.