Night, Umbrella Research Base in Detroit.

The research base is abbreviated by Yang Yifei and Dr. Aixfor. The official name of this place is actually Umbrella Biotechnology Co., Ltd.

Located in the north of Detroit, it is a large park integrating laboratories and production plants, covering an area of ​​hundreds of thousands of square meters.

The park has very tight defenses on weekdays, and it is impossible for outsiders to enter the park, so no one knows what the researchers in Umbrera are studying, and no one knows what the factories are producing.

With this park as the center, there is almost no zombie within a radius of 10 kilometers, so it was naturally led to a distance by Umbrella's people.

After obtaining Alice's genes, Dr. Isaacs took his research team to the underground base in Las Vegas to conduct the second phase of the Alice project.

The park is not operating now, but a team of security personnel are left to guard the park. Their mission is to guard all the equipment and materials of the park, and to kill those survivors who want to take refuge in this park. Of course, it also ensures that the park is not attacked by zombies.

They also have armored vehicles and even two transport helicopters. Once they find zombies close to a certain range in the park, if the number is small, they will be cleaned up.

If there are too many, they will fly armored vehicles or even helicopters in the air. Just like what Yang Yifei and the others did, they will lead the tide of corpses away and keep the surrounding area empty, which just facilitates Yang Yifei and the others' infiltration.

There were more than 40 security personnel left in the park in Umbrella, and there were just 4 teams. There were guard booths at the entrance of the park, with two stopper poles across the gate. There were two security personnel sitting in the guard booth, and there was a spacious duty room more than ten meters away.

The duty room has two rooms. The inner room is the bedroom of the duty team, which contains more than a dozen beds. Other members of the team who are not on duty sleep inside. The outer room is a room where security personnel rest during the day. There is an instant messaging device here, which can be contacted with the monitoring room and other teams.

The duty at the gate is rotated, each team lasts for one week, while other team members live deep in the park, and several other guards are on duty deep in the area, and they are responsible for patrol at night.

Since there is a wall of up to 5 meters above the park, zombies cannot get in, so they mainly guard against survivors coming in.

As for a 5-meter-high wall, you can't get in without some tools. Besides, normal people usually don't think of climbing over the wall, because there are no zombies nearby, so they can calmly walk in through the gate, seek help openly, and then be killed by the security personnel.

So in general, the work of these security personnel is not heavy or stressful. There are two team members on duty at the rooftop day and night at any time, paying attention to the movements in the surrounding neighborhoods.

They are equipped with sniper rifles equipped with silencers. If they find zombies wandering here, they will snipe them directly. If there are many, they will notify other teams to drive armored vehicles out to attract monsters.

However, this work that is neither heavy nor stressful has gradually reduced their vigilance. Today, a group of guys who do not play by the norm and do not walk through the door chose to climb over the wall.

...

Under the northern wall of the park, Yang Yifei and his 14-member team came here from two kilometers away. They were afraid that they would be discovered by Umbrella's security personnel, so they stopped the infantry fighting vehicles two kilometers away and chose to move over on foot.

When they were 1 kilometer away, they had already used military telescopes to find someone shaking on the rooftop of the tallest building in the park. They also saw a sniper rifle barrel facing the sky.

So they were particularly careful when moving, using various buildings along the way to hide their bodies and break into the wall.

As for monitoring probes or something, they don’t need to consider it at all. They just need to consider avoiding the sight of the artificial sentry.

After reaching the bottom of the wall, Yang Yifei tilted his head slightly and whispered to the headset that was pinned on his collar: "Doctor, how about it?"

Dr. Axford's voice immediately came from the headset: "I have invaded the system, and the surveillance screen will remain 5 minutes ago. Fortunately, this base does not have a system motherboard with the Red Queen, otherwise it will be troublesome. In the online world, the Red Queen is the God."

This time, Dr. Ashford was naturally an indispensable person. Because of this, Yang Yifei left one person to protect Dr. Ashford in a chariot, and only 14 people participated in the operation.

Yang Yifei said happily: "It's very good. Can you find the location of all the security personnel?"

Dr. Ashford looked at the three-dimensional stereoscopic image on the computer screen, which showed 14 green dots and 48 red dots.

"No problem, there are 48 people in the base, and two of them are on duty on the rooftop of the building where you are located. There is Building A3, with 8 floors in total, and 10 people sleep in the first room on the right side of the staircase on the first floor below the rooftop."

"The two of them were in the door booth, 10 people were sleeping in the gate duty room, and 4 were patrolling the park. At this time, they were located outside the factory c2 and were moving towards factory c3. There was one person in the monitoring room, and the rest were sleeping in rooms 101 and 102 on the 1st floor of Building b2."

Yang Yifei said appreciatively: "Well done a good job, we have already won half of it."

Dr. Ashford said: "Be careful, I wish you all the best."

Yang Yifei said to everyone: "Everyone, I will kill the two guard posts on the roof from here. You go along the wall to the gate, touch the guard posts at the gate, and then drive straight in. We will exchange the foreign exchange in Building B2. Are you sure?"

"clear."

“Very good, act.”

After Yang Yifei made arrangements, he carried the submachine gun in his chest behind him, jumped over the 5-meter high wall easily, and then rushed to the building quickly, secretly carrying the gecko's wall-walking skills, and quickly rushing up the vertical wall.

Looking at Yang Yifei who was crawling quickly on the wall like a gecko, the team members were envious and wondered how long it would take for them to do all of this. They had just practiced their sense of qi and were still far from Yang Yifei's realm!

Alice waved to everyone and took the lead in touching the gate along the base of the wall, and the others hurriedly followed.

The building that Yang Yifei climbed was more than 30 meters high, but it took less than 10 seconds. He was slid on the edge of the exterior wall and listened to the movements of the two posts. As a result, one of them was breathing evenly and was sleeping soundly, while the other was on duty seriously.

Yang Yifei pressed his hands and legs against the wall, pulled out the soft pistol on his legs with his right hand, and then he used his hands and feet to force his whole body upwards.

"Puff"

Two faint gunfire sounds sounded, and the guy lying on the recliner, his even breathing stopped immediately, while the other person fell to the ground.

Yang Yi kicked his foot on the protective wall and used the Yuewang divine arrow light technique. He instantly crossed the distance of 11 or 2 meters. He grabbed the man when he was about to hit the ground, and then placed it gently on the ground.

The sound of the human body falling to the ground was quite loud. Other members of this team were sleeping in the room downstairs. If this guy smashed it down, it might wake up the vigilant person.
Chapter completed!