Mei Lan, Ma Shiyuan, Old Dog, and Red Ghost are swimming in the natural sewers in the basement.

The old dog can swim underwater with Mei Lan and Ma Shiyuan for a long time by taking a breath, the red ghost's body and appearance have changed a little, and some fish scales have grown on his body and face, and he can breathe underwater, and his swimming speed is much faster than the three of them.

Mei Lan and Ma Shiyuan were extremely shocked when they first saw the changes in the red ghost's body, and then remembered that a colleague had said that the second-level enhanced genetically modified warriors had undergone some genetic modifications, and guessed that maybe these warriors were genetically modified to have animal DNA.

Several people swam to a shore where several guards were patrolling.

The Red Ghost leaps to the surface of the water and kills all the guards in an instant.

Merlin could only surface and walk to the surface, and the old dog sniffed around with his nose at this time, and then listened to the movements around him with his ears.

Then he gestured to several people.

The four of them immediately divided their work and killed the local guards in different directions.

Then, the old dog continued to listen to his surroundings with his ears.

The old dog picked up the rifle on the waist of the guard he had just killed, and after taking a few steps, he suddenly turned around, and the muzzle of the rifle was pointed in one direction.

The others immediately pointed their guns in the same direction, and several rhythmic sounds followed.

"Name your code name?" The old dog asked.

"Chameleon." Then a man wearing a Spartan suit type 2 and 2 meters tall stepped out of a bunker.

"Chameleon, how many days have you been here?"

"For 3 days, there was some destruction and observation in the basement."

Ma Shiyuan opened his mouth and asked, "Are you the only one who did those explosions in the underground floor?" ”

"No, and I'm not alone, I, plus two other second-level enhanced genetically modified warriors, 4 first-level warriors, 2 prosthetic warriors and 3 ordinary special elite warriors."

Merlin asked, "Can we join your online clique?" ”

"No problem."

The chameleon looked at the red ghost and the old dog and asked, "What about your Spartan suit?" ”

"It was confiscated."

"Judging by your appearance, I guess a lot of people have been arrested."

After Mei Lan and Ma Shiyuan connected to the chameleon's small circle website, they also brought Cui Jie and Dohir in.

Mei Lan and Ma Shiyuan learned about the environment and roads that their companions were groping in the underground layer, which was more extensive than the map they got.

Soon, the Meilan people understood a little about the structure of the underground part of the Marcus Fortress, and learned that they had some sources of electricity, in addition to nuclear power, there were other sources of electricity such as hydropower, wind power, solar energy, etc.

Some of the electric energy transmission pipelines were destroyed, which could not be repaired and restored in a short time, and some of their underground transportation pipelines were also found.

Although Cui Jie and Dohir did not enter the underground layer, they also found other companions on the surface level, and now their small circle network is also getting bigger and bigger.

Change source app, view the latest chapters of the book on multiple sites at the same time. 】

Now that the front-line Dion army has suffered a crushing defeat, the exterminator troops are already about 100 kilometers away from the Marcas fortress.

The three-tiered Titan Wall is currently 100% defensive, and the best way to weaken it, other than a source of power, is to find the console or its device.

Now find one of these devices in the Underground Layer, and if destroyed, reduce the defense of one of the Titan's Walls by 15%.

But the problem is that they are heavily guarded, even if they transfer all the people in their small circle network, because they only have 30 people at full capacity, and there are at least 2,000 people guarding there, and many of them use heavy weapons.

Unless a large part of these numbers can be removed, the success rate is essentially zero.

However, it is possible to destroy the electrical energy delivery pipe.

The person in charge of the Marcus Fortress had already anticipated that the electric energy transmission pipeline would definitely be attacked, so he also made a lot of alternative underground electric energy transmission pipelines, and once they were damaged, they were immediately replaced with new electric energy transmission pipelines.

Cui Jie and Dohir also rescued some of their companions, and also recaptured some Spartan suits, some of which were either destroyed or installed with nano trackers.

The former can only be thrown away, the latter can be disposed of, and if it can't be disposed of, it will destroy the Spartan uniform.

Now each person or group is working on a different plan.

On the other side, Yelishod received the news that some of the rescued Tianyi mercenaries immediately took revenge on them.

In particular, the second-level intensive GM surgical warriors have caused more damage and loss to them.

Unable to extract more useful information, Yelishod ordered all the captured Skywing mercenaries to be executed.

On October 2, 126 years of the first year of the universe, the front-line troops who had fled into the fortress of Makas were attacked by some explosions while resting.

In just three hours, several anchorages, lounges, etc., were attacked by explosions, snipers, and so on.

This led to round after round of carpet searches inside the Marcus Fortress.

The Tianyi mercenaries have mastered the other party's search mode and the information of the undercover agent or the second or fifth boy, so as to avoid every local search.

There are even some drones, search machines, etc., that were hacked into the community console by the Tianyi mercenaries, and some information was tampered with from them.

In addition to the explosions at the docks, rest rooms, etc., many electrical energy transmission pipelines were damaged, both underground and superficial.

The commander of the Marcus Fortress immediately dispatched a repair team to repair the partially damaged electrical energy transmission pipes.

Continuing to be destroyed by the Skywing mercenaries will definitely affect the operation of Marcus Fortress, especially the power required by the Titan Wall.

For the sake of safety, the commander arranged for other troops to protect the maintenance team from being attacked by the Skywing mercenaries, and also arranged for other troops to protect the electric energy transmission pipelines that would still be damaged.

In the small circle network, Lao Gou, Mei Lan, Cui Jie and others conducted a series of discussions, some of whom continued to sabotage the power transmission pipelines, while others carried out assassinations of figures above the school official level.

There are also some people who find ways to poison the water and air of the Marcus Fortress.

The rest of the group is waiting for an opportunity to destroy the Titan's Wall of Devices or Consoles.

At this moment, in addition to dealing with the sabotage and mischief carried out by the internal Tianyi mercenary group, Yelishod also had to appease the internal feelings of defeat.

After the defeated troops on the front line fled into the fortress of Marcas, the enemy came to the city, and most of the soldiers of the defeated front troops could not raise their will to fight, which also affected the other soldiers in the fortress.

In addition, there were countless explosions and assassinations in the fortress, which made many people think that a large number of enemies had infiltrated them.

The word defeat also began to gradually penetrate into everyone's hearts, and the thought of surrender flashed in the hearts of many people in the Dion army.

In order to appease the emotions of all the soldiers, Yelishod assured all the soldiers that they would live and die together, advance and retreat together, and the fortress would be in him, and the day the fortress was breached would be the day he died.