Hypoxia era

Nothing happened for seven consecutive days, and the little guards were relaxed physically and mentally.

Under Lu Yi's iron-blooded wrist, Class Three's discipline is passable on the surface, but the gossip behind the scenes and the psychological state that she can't control are still out of control after all.

Even for Lu Yi himself, the sense of crisis began to weaken day by day.

But there is also a different kind, who is like a blinding bright light in the overall lazy team, and is out of place.

Lu Yi found that Xiao Sifang was getting more and more nervous. In the first few days, she was still racing against time in the dormitory to make up for the manufacturing department's class. In the past few days, she couldn't do it at all. Just holding the knife and gun to watch the documentary of the battle on the battlefield, the sound of footsteps with a slightly chaotic rhythm sounded outside, and they wanted to draw their swords.

Lu Yi observed her for a long time, and the more complicated it became, "You...do you know something that I don't?"

After asking, she felt a little nervous again, but she didn't expect that the person being questioned really nodded.

Xiao Sifang looked dignified, and repeatedly held the handle of the knife with a hand that was familiar with the grip and stopped moving. The alloy knife was placed on the table, but the energy panel on the identity ring was pulled out. After a few clicks, it switched to somewhere outside the city. live interface.

"Although the SkyEye system has collapsed, the monitoring on the ground still exists, and live broadcasts have been opened at all guard locations, and they are always ready to sound the alarm."

Lu Yi looked at the interface and found nothing abnormal, then looked at her again, "What's wrong?"

Xiao Sifang zoomed in on the camera and showed her the face of the guard on duty.

Looking at Lu Yi, he found the problem, and looked at Xiao Sifang in surprise, "Does it mean that they look nervous? Why?"

"Because you need to be nervous, that's why you're so nervous."

"The academy didn't express anything about our lax attitude."

"Maybe it's because you feel that being nervous at the beginning will affect the subsequent state?" Xiao Sifang also guessed casually, relying on intuition.Although she and Willie had a grudge, the dean was still a competent dean regardless of class grievances. She didn't think Willie would remain indifferent.

Sure enough, on the second day after this conversation, the dean began to personally inspect the campus, and severely punished a few students who were sloppy.

The campus radio began to circulate his deliberately lowered notification sound, and the low morale was pushed to a new peak.

In the early morning of a new day when all the staff worked hard, it was finally the turn of the third shift on duty throughout the day to complete the shift handover and orderly disperse to the new 25 stations.

Lu Yi yawned silently, looking towards the west in the light of six o'clock in the morning.

The location they guarded this time was the east side of the campus, the location farthest from the city wall.

A few dissatisfied complaints came from the group voice.

"The corners inside should be guarded by the command department and the classes behind the combat department. Our third class should be stationed in the northwest and southwest areas."

"That is, if it really comes in, we will always have a little longer than they can stop."

"Don't be crowed, please, this kind of thing can't be said..."

A few words completely dispelled Lu Yi's drowsiness, and by the way, she also lit her fire, raised her wrist fiercely and approached the mouth of the mouth, and shouted: "Aren't you awake yet! Say something meaningless, whether it is The alien landed in the outer city and broke through to our college, or directly landed in the inner city and killed our college. It’s just such a three-acre land, where is the difference? Don’t talk stupid and disgusting people, just be more energetic and pay more attention to your surroundings! "

As soon as she finished cursing, the group voice quieted down as if it was turned off.

As for whether someone scolded her behind the scenes, Lu Yi himself expressed that he didn't care at all.

Xiao Sifang has collected a lot of information on the aliens in the past few days, and then contacted the dense and ancient way of standing guards arranged by the hospital, and the guesses in her mind became more and more frightening.

The intelligence level of aliens has been officially recognized, so will they really fall from the sky with great fanfare and with great energy and intelligence no less than that of humans?If it's just a way for people to discover it instantly, then why didn't the hospital use mechanical monitoring with a wider perspective, but let them stand in a fixed position and observe in this limited and laborious way?

Could it be an alien invasion, most likely a low-key lurking state?So it is necessary to arrange manpower in every corner of the campus, so as to block or drag the other party in the first place?

Things haven't happened yet, and Xiao Sifang has no way of knowing whether all these inferences are correct.

The confirmation came very quickly. When she walked around the site and wanted to climb a three-meter-high bionic tree to look into the distance, a bright light flashed in the distant western sky, and then rose in all directions. A signal flare with a long tail of smoke!

Then the campus broadcast sounded, and Willie's voice spread throughout the campus with a hint of urgency.

"Alien invasion! All combatants are ready, the on-duty personnel are on standby, and other combatants cover ordinary teachers and students to evacuate!"

There is an underground refuge inside Chris Academy, but it is not very reliable. Even if it is an ordinary alien, if it finds the entrance and insists on attacking and colliding, it will take a certain amount of time to tear the entrance.If there is no rescue at that time, it will be an extremely tragic one-pot end!

Knowing this, Willy still issued an evacuation order, which proves that the alien invasion is menacing, and Chris Academy will be affected by the flames of war and even face a frontal attack in a short time!

"Everyone stay calm, we still have time to retreat! The personnel on duty take cover on the spot and prepare to fight!"

After the order was promulgated, Xiao Sifang and Lu Yi, one on the left and one on the right, hid in the dense branches and leaves of the bionics and in the dark corners of the buildings respectively at the fastest speed, quietly dormant.

The entire campus suddenly fell silent, and the sound of short breathing came from the earphones, and everyone connected by the group voice was trying to suppress their fear.

In this difficult time, no one can be nervous, and the unknown fate is sweeping towards them like a torrent.

Xiao Sifang's energy panel cuts out three images, all of which are small campuses shot from high above. In the image, the crowd is crowded, and small particles like nutritional mud seem to flow slowly into the hollow under the statue.

In the past few days, she has made a little preparation within her power, a total of two things.

One of them was to let a secretly purchased surveillance probe climb to the roof of the tallest actual combat building in the college, and the other... Her fingers quickly operated on the panel. After two or three seconds, the whole picture was completely dark except for the upper left corner. and the slightly red picture in the lower left corner jumped to the very center of the monitoring screen.

She used the only intelligent center, and other necessary parts purchased with 3000 star coins, made an energy sensor by herself, put it in her chest pocket, and sensed in real time the [-] meters around herself as the center. The energy of the radius fluctuates, and builds a rough energy map in a reddish way to monitor the surrounding energy fluctuations.When the energy value that can be detected exceeds [-] Sa, the intelligent center will raise the temperature change button connected to the sensor, and when she has no time to look at the sensor map, it will remind her of the crisis.

From the current point of view, everything around the academy is calm, and the energy response is also very stable, staying on a little bit of fluctuation from several directions sent by the signal flare.

But...Xiao Sifang looked at the red light on the edge of the energy map, such a rough sensor can capture the energy fluctuations, how close is the alien's attacking place!

Suddenly, the red light on the right side of the originally pitch-black energy map lights up, and a bright red line is pulled out in the black at an extremely fast speed, and the diverging red light has already stacked to the far left, dyeing the entire energy map Bloody!

The ones from the east are approaching!According to the current speed of travel, at most 20 seconds will arrive at the academy!At that time, their third class will bear the brunt!

Xiao Sifang suddenly raised his wrist, "Enemy attack! Fire the signal flare, and all the protective covers are opened!"

When the unfamiliar but impressive voice sounded from the group voice, most people did not react. After a second of stunned, someone responded displeasedly: "Xiao Sifang? Where did the enemy come from..."

"Immediately!" The huge sense of crisis made Xiao Sifang's palms greasy, he jumped out of the bionic tree, and ran towards the breakthrough point deduced by combining the energy map and the monitoring screen, "Lu Yi's protective cover is fully opened Follow me, the rest of you shut up and pay attention to your surroundings!"

Lu Yi only hesitated for a moment before following her footsteps, the six protective shields opened at the same time, and waves of gentle blue light glowed all over his body.

Xiao Sifang's chest was so hot that there was a burning sensation, and the sound of her rapid breathing beat in everyone's ears.

Han Yu gritted her teeth and fired the signal flare as she said!

The position of the energy map cannot be accurately located, but there is no need to locate it. At the moment when the bright light and the explosion appeared at the same time, a wall on the east side was directly knocked down. Brown creatures come into view.

After all, Xiao Sifang and Lu Yi's speed was a bit slower. The attack position of this alien animal fell directly in the area of ​​No. [-] site. As soon as it entered the academy, it aimed at a dense bionic bush, and there was a sound in the bush. A terrible scream.

Immediately afterwards, a figure fled crazily, and the protective cover on her body emitted the last bit of brilliance, and quietly shattered.

Lu Yi saw the escaped person clearly, and rushed over without thinking, "Yuanyuan—"

It was Yuanyuan and Yu Liangliang who were in charge of this site. After Xiao Sifang's order was issued, among the two hiding together, only Yuanyuan hesitated and opened the protective cover, while Yu Liangliang did not approve of Xiao Sifang's order. Think opening the shield now is just a waste of energy.

When the accident happened, she was still complaining about Greta's wrong decision-making. Who would have expected that before she finished speaking, she was attacked by the alien animal and her head was smashed, and she let out a final scream.

Although the attacks of alien animals cannot reach the level of alien humans, and their energy value is as high as tens of thousands of sa, it is not something their bodies, which have just begun to really temper, can resist. If they can enter the rescue cabin within half a minute after encountering an attack There is still salvation, but it is obviously impossible at present.

"One, two, four, five, hurry up to Station No. [-] for support!" Xiao Sifang used the particle gun in his hand to suppress the alien animals and continued to pounce on Yuanyuan's route, while trying to calm himself down and gave instructions, "Lu Yi directly blocked it !"

Aliens are not as difficult to deal with as aliens, they must be killed by high-energy heat flames, although alien animals are several times more difficult to deal with than heterosexual plants, but enough firepower can penetrate them!If you dare to get close after finding the weak point of its alienation, the super alloy knife with special devouring power can kill them instantly!

More importantly, alien animals do not have the ability to condense energy to attack, as long as they are not caught up, they are safe!

The particle guns in their hands are not bad. Hitting the same surface multiple times in a row can kill them faster than their abnormal self-healing ability!

"Squeak—" the alien animal let out an angry cry, abandoned its original target, and rushed directly towards Xiao Sifang.

Xiao Sifang, who had been prepared for a long time, easily dodged, held his breath, aimed, and hit its back with one shot, and then tried to shoot it a second time. The small and flexible alien animal had already rushed in front of her!

"Go to hell!" Lu Yi finally arrived, relying on the layers of protective shields on his body to get very close to the alien animal, almost hitting the tan body with a particle gun, firing bullets continuously.

The alien animal leaping in the air fell down and stopped moving.

Lu Yi let out a deep breath, and was about to check on her friend when she saw Xiao Sifang running behind her with an extremely terrified expression, and the protective shield on her body was shattered in the next second!

Only the people hiding behind her shouted at the top of their lungs: "All those whose protective shields have a resistance higher than [-] Sa are moving towards me! The rest of the personnel act as a group, and deal with the alien animals in groups of three!"

Lu Yi's ears buzzed.

For the rest of the personnel to deal with alien animals, the resistance of the protective cover is higher than [-] Sa...

Not far away, a two-meter-tall humanoid creature stood on the top of the wall, flicking its slender tail lightly, its face full of festering sores moved, revealing a ferocious smile.

The author has something to say: Lu Yi, an ordinary meat shield.