A group of people walked through the weeds and came to the vicinity of the first-level laboratory, and were stopped by a five-meter-high barbed wire, this is not an ordinary barbed wire, the specific material Su Chen did not know, but he knew that this barbed wire had a high-voltage current, not to mention a person, even if it was an elephant, it could be electrocuted instantly.

This is a national first-class laboratory, which contains many important national confidential documents, and all defensive measures are not humanized at all, and if you are not careful, even if you are a special soldier who has experienced a hundred battles, there is a risk of death.

"Lieutenant, is the power off?" It has been many days since the end of the world, and Su Chen is not sure if there is still a high-voltage current flowing in the power grid in front of him.

"It stands to reason that there should be none, even if there is a power outage in the whole city, the first-level laboratory also has backup power supply, and the first-level laboratory also has an independent large-scale generator, as long as the raw materials are sufficient, it can support a month casually." The lieutenant replied.

"Alright, tell me how to get in." Su Chen spread his hands, not wanting to think about these questions.

"Go to the main gate, there's a sentry there." The lieutenant has a detailed map of the first-level laboratory, except for a few classified areas that are not marked, he can be said to know the first-level laboratory well.

Su Chen thought that the lieutenant was planning to smash the gate, but when he arrived at the destination and saw the gate that he didn't know how to describe, he directly gave up his ridiculous idea, not to mention using a gun, the ten-meter-high thickened steel door in front of him, even if he drove a tank, it would be impossible to smash it without three or five shots.

Outside the gate, there is a fifteen-meter-high outpost, which is not large, and is equipped with four heavy machine guns, which are connected to a computer in the Level 1 laboratory, which can automatically recognize people's faces, and once confirmed, fire is immediately fired.

When Su Chen and the lieutenant climbed to the top floor of the outpost and saw the reddening indicator light, Su Chen was able to determine that the first-level laboratory was still in operation.

If there is a power problem in the Level 1 laboratory, the outside defenses will prioritize the power outage, after all, the power consumption of the power grid can be compared to that of several laboratory buildings.

The space on the top floor of the outpost is very small, it can accommodate up to two people at a time, after the lieutenant is sure that there will be no problem with the rope, he throws it at the outpost in the power grid, the outpost in the power grid is artificially stationed, it is bigger and taller than the outside, the lieutenant made sure that everything is safe, and he gestured with Su Chen, and then grabbed the rope and crawled over slowly.

The rope is at least ten meters above the ground, and falling down is no joke, if you accidentally fall on the grid, it is really bad luck.

The distance between the two outposts is only fifteen meters, which is a few steps for Su Chen, but climbing the rope at a high altitude is not a simple matter.

Su Chen followed behind the lieutenant, and the other two special forces were on the tower to confirm the stability of the rope, and they could also help in case of special circumstances.

Su Chen has never climbed a rope, which requires a lot of demand on his shoulders and even his whole body, but the last thing Su Chen lacks is strength, he is just a little nervous.

Soon, Su Chen and the lieutenant came to another outpost, the lieutenant reinforced the rope, and the other special forces followed closely.

When everyone entered the first-level laboratory, hundreds of zombies swept through the dust and smoke came to the outside of the first-level laboratory.

The red dots of the machine guns were always on, and countless zombies were scorched by the power grid, and this group of zombies that almost wiped out Su Chen and the lieutenant's team tasted the pain they should have suffered a long time ago.