Dark clouds covered the sky, and the night was extremely dark.

Since yesterday, the weather has been a bit dreary, and it looks like it's going to rain.

Several dark shadows weaved through the silent campus, sneaking in the direction of the principal's office, wearing the finest bulletproof tactical vests, night vision devices integrated with goggles, and armed with M25 sniper rifles with mufflers on their muzzles.

Soon, they were back outside the door of the headmaster's office, where there were still the same people, six men, four women, who were laughing and not knowing what they were talking about.

The door to the principal's office is mahogany, so you can't see the outside.

Wang Chen squatted under the door, put his palm on the doorknob, stretched out three fingers to Li Chenfei and the others, and then made a neck-cutting motion, which means that after three seconds, attack!

Li Chenfei and the others nodded, and they all crouched down at this time, ready to shoot.

Time passed second by second, and when the time reached the third second, Wang Chen twisted the doorknob open, and then pushed it away.

The moment the door was pushed open, Li Chenfei and the three of them had already pulled the trigger, and three muffled sounds came out, and the three big men who were laughing shirtless were killed in an instant!

The remaining seven were stunned for a moment when the door was pushed open, and they did not hesitate to pick up the pistol on the table and fight back.

But it was impossible for Wang Chen and the others to give them a chance to fight back, and after Li Chenfei and the others pulled the trigger, they didn't even see if the enemy was killed, and then they aimed at others and continued to pull the trigger.

Wang Chen rolled into the room, took out two mobile phones with mufflers from his waist, pulled the trigger on the two women who had already got the pistols, and blew the heads of the two women on the spot.

The two female corpses fell to the ground with pistols in hand, their severed skulls twisted and drooping on their scalps, white brains mixed with blood and spilling all over the ground.

In less than a few seconds, all ten people in the principal's office were killed!

"Close the door and go!" Wang Chen made a backward gesture, closed the door, and the four of them quickly ran towards the direction of the laboratory.

When Wang Chen and the others ran to the door of the laboratory, the blood wolf had already opened the door of the laboratory.

The three of them are in different rooms, and C4 explosives are being installed, and Jack and Ellie are standing outside the room, because the explosives, once detonated, are enough to blow up the entire room!

C4 explosives are tactical explosive packs, and installing this explosive pack is a technical job, and you can blow up the places you want to blow up only when you install them in a reasonable position! The target of Wang Chen and the others is the ground, that is, the surface layer of the basement!

"Enter!" Wang Chen believes that Viper can complete the accurate installation task, just as Viper they believe in Wang Chen, this is the trust between comrades-in-arms, in the time of war, they can completely hand over their backs to their comrades!

Entering the laboratory, Wang Chen opened the floor, was the first to go down to the passage, and when it was sure to be safe, he made a gesture to Li Chenfei.

Li Chenfei stepped on the herringbone ladder, handed the firearm and the heavy machine gun to Wang Chen, Wang Chen slowly put the firearm on the ground, and after completing these, the blood wolf and others also came down from the herringbone ladder one after another.

Walking to the end of the passage, the five of them each found a place to crouch down, and the blood wolf set up a crane gun, quickly sorting out the scattered bullet chain.

Wang Chen looked at the time, and after waiting for a few minutes, he estimated that the C4 explosives of Viper and the others had been installed, so he stretched out his palm, and then retracted his fingers one by one.

When his finger was only standing with an index finger, the fingers of Li Chenfei and the others had already been placed on the trigger, and the moment Wang Chen grasped the fist, the four of them suddenly appeared on the bright side of the passage and pulled the trigger on the four enemies closest to the bazooka.

"Bang! …… Poof! ...... "First of all, there was a huge gunshot, because this gunfire was a signal!" This was followed by three muffled sounds, and four enemies armed with guns were killed in an instant.

The sudden scene made everyone in the basement change color in unison, and the muzzles of many armed elements were immediately aimed in the direction of Wang Chen and the others.

But before they could pull the trigger, Wang Chen and the others were already lurking, and at the same time, they ...... Three loud noises rang out suddenly, followed by the splashing of stones and clods of soil, and three large openings of several square meters appeared in the sky above the basement!

The sound of the explosion attracted the attention of the militants, and the blood wolf pushed the heavy machine gun that had already been erected and pulled the trigger at the crowd.

"Da Da Da! ......" gunshots rang out incessantly, killing many armed men and scientists in white coats who had not had time to dodge.

Just as the enemy's eyes were once again diverted by the heavy machine guns, Viper and the others also rushed to the hole that had been blown open, and flashbangs, tear gas, and stun grenades were thrown out in unison.

"Boom! ......" explosions were followed by the gas splash of tear gas, then followed by the bright light of flashbangs, and finally ...... It's the flash and noise of a shock bomb!

Compared with flash grenades and tear gas, everyone is more familiar, but shock grenades are a little unfamiliar.

The stun bomb produces a powerful flash of light equivalent to about 8 million candles and a loud noise of about 170 decibels.

Since the visual cells of the human eye have a picture retention effect, it takes at least five to ten seconds to regain vision! And if you don't wear earmuffs, this noise is enough to stun people.

The stun grenade alone was enough to buy ten seconds, plus tear gas and flashbangs...... These affected militants are completely incapacitated for a few minutes!

Those who were close to the explosion range of the shock bomb were even stunned on the spot, while those who were close to the range of the flash bomb squatted on the ground with their eyes covered and lost their sight in a short time!

Even if they were far away from the range of shock grenades and flash grenades, they were blinded by tear gas at this time, and they just blindly strafed around with firearms.

Viper and the others jumped from different holes, their machine guns swept through, and Jack and Ellie aimed their sniper rifles at the armed men with guns, killing them one by one.

The Blood Wolf's heavy machine gun never stopped, and it was completely a trend of firing all 500 rounds in one go.

Li Chenfei and the others took sniper rifles and shot at those who were close to the bazooka, Wang Chen quickly ran inside, pulled up a person who was squatting with his head in his head and wearing a white coat and ran towards the passage.

Any second of time in the war is precious, Wang Chen and the others did not waste any time, everything was completed in an instant.

After the viper and the others finished firing their magazines, they immediately found a bunker and hid them, took out the flashbangs, tear gas and shock grenades left in advance and threw them again.