January 25, 438 A.D. at 7 a.m

An unknown fire, an inexplicable attack, tossed the orc troops of Sara City all night.

This was supposed to be the time of the day when the orc troops gathered out of the nest.

But now in Sara City, except for a few key positions, there are almost no orc warriors.

Obviously, after a night of tossing, most of the enemy troops returned to the camp to rest.

In this case, Ergou does not have to guard the rooftop, in fact, there is a monitor to monitor in real time, and Ergou has no need to monitor it personally.

So what's next, rest, kill, or continue scouting?

After a night of repeated calculations and deductions, it was difficult for Ergou to come up with a perfect battle plan.

The limited number of troops makes it impossible for you to directly occupy Sara City in a short period of time.

And in the city of Sarah, it is even more unrealistic to come and go freely for a long time in a travelogue battle without being discovered by the enemy.

Once the enemy is alarmed, the consequences are unimaginable.

In addition, there are too many important facilities in Sara City, and there are not many places where booby-traps can be performed, and in this Sara City, it can be said that all the buildings are extremely important to Ergou, not to mention various strategic material production plants, even if it is a warehouse area, there is a huge amount of wealth for Ergou.

It can be said that Ergou, every time he destroys a part, it is a loss of more wealth, and it is obvious that Ergou has already regarded Sara City as his private property in his heart.

In addition, there are a large number of human captives who need to be rescued, with less to more, but also to protect property, not to injure the masses by mistake, this time the number of combat troops of the two armies is seriously unequal, which makes Ergou a little nerve-wracking.

The area of Sara City is not large, the population is large, the high-tech production of many categories is complex, and it also needs to integrate self-sufficient and diverse material production, the need for secrecy, and the above-ground buildings have strict floor height restrictions, so the conclusion is naturally that the underground building part of Sara City is as large.

As soon as he thought of this, Ergou walked down the roof and walked back to the cargo station, the eighteenth sister and Anna were not sleeping, and they were still using the existing resources, working hard to make bombs, and several boxes of finished products had been placed behind them.

"I'm back, the two young ladies have worked hard, yo~ There are a lot of results, don't you let the two of you rest? Disobedient! The second dog who entered the door said as he walked.

"How dare you rest, we are facing hundreds of thousands of orc troops, so what is this! Our support troops should come early, otherwise Sister Chili and I probably won't be able to do it in a few days! ”

Anna chewed chocolate in her mouth, grumbling, and the bomb was assembling at a rapid pace.

The eighteenth sister is doing some simple explosives and medicine packaging, one big and one small two beauties, happy cooperation, this situation makes the second dog have the illusion that the mother takes her daughter to make dumplings.

"How's it going over there? There's nothing new about the enemy, right? "The eighteenth sister is concerned about the situation in Sara City.

"Ah, nothing is a big problem, the orc army tossed all night, and most of them are resting at this time.

However, three cargo airships have just departed, presumably to transport goods to other bases.

I've pressed a couple of monitors on it, and I'll go down to the basement to see if I can find any military information that is good for us. After Ergou finished speaking, he was ready to leave.

"Don't need some breakfast?" The eighteenth sister said with concern.

"Let's eat some emergency capsules first, before the reinforcements arrive, I will do as much reconnaissance as possible in detail, the orcs are tired at this time, and they should really take the opportunity to harass the enemy."

Saying that, the figure of the second dog has disappeared at the fire staircase.

......

Ergou was at the exit of the fire escape on the basement floor, looking in from the transparent observation window on the door, as Ergou expected, there was no enemy guarding, using the permission that Anna had obtained before, Ergou easily opened the door and walked in.

The smart ceiling light then lit up, and a square hall with a huge space appeared in front of Ergou's eyes.

In the center is a circular guardhouse that is transparent all around, and there seems to be weapons inside.

It is unimaginable that the careless orc garrison is so relieved and bold that this place is empty.

In the surrounding area, a large number of small field trams are parked, and now this level is a passage for personnel, and these field cars are used to facilitate the rapid passage of personnel underground.

And in the four directions of this hall, there are four deep tunnels, you can't see the end at a glance, no one passes by, and there is no light, and the Hesse Forest is a little crazy.

On the wall on the side of the exit of each tunnel, there is also a landmark nameplate, which shows the location and distance information that can be accessed in detail, such as 2 km for the Academia Sinica and 5 km for the nuclear power plant.

The thick dust on the ground shows that the orcs have not used this facility for a long time, if the entire underground transportation network extends in all directions, the orcs have not used or even defended, wouldn't it be perfect, with the battle plan of the two dogs, it won't be so smooth, right?

Ergou quickly got on a field car, there is only one start button on the dashboard, steering wheel, brake, throttle, simple operation, Ergou tried to press the start button, the equipment is in good condition, and the operation is simple to light up.

After installing a single self-defense weapon at the door, Ergou quickly sat in the driver's seat of the field car, stepped on the accelerator and drove to the east tunnel, and the nuclear power plant 5KM shown on the sign was the area where the explosion occurred last night.

Not to mention that the speed of the car is quite fast, at least the speed is not less than 60 kilometers per hour, but the double field car that Ergou chooses at random is really a bit small, and he is also wearing a mecha, driving a small field car at this time, and the picture of driving in the tunnel is not funny, it looks like a big bear, riding a child's tricycle.

Since it is underground, Ergou doesn't care about 3721, and turns on all kinds of detection equipment of the mecha, thermal imaging, active radar, and life detector.

The equipment in the tunnel is working normally, and wherever Ergou's field car goes, the tunnel will be lit up accordingly.

Thinking of the mentally handicapped enemy, sending such a big flaw to himself, thinking that he could kill hundreds of thousands of orc armies without bloodshed, and occupy Sara City for himself, Ergou was extremely excited.

At the end of the accelerator in the tunnel, Ergou, who was driving the car, hummed proudly, but Ergou, who had lost his memory, didn't know what song he was humming subconsciously.

A few minutes later, just as Ergou was excited and proud, humming a little tune, and stepping on the accelerator into the engine, the top-heavy small field car was about to fly.

The tunnel lights in front of him were not turned on in advance as before, and the visual distance was shortened instantly, and the second dog instinctively just wanted to slow down, and found that there was a bottomless pit dozens of meters in front of the road.

Nima! Ergou's heart was not good, and he stepped on the brakes in an instant, but before that, Ergou drove too fast, and was wearing a heavy power mecha, huge inertia, it was not so easy to stop, and it was about to fly into the ditch with people and cars, and at this time the mecha also sounded a piercing danger alarm.

In a hurry, Ergou hurriedly hit the right side of the direction, it may be better not to hit the direction, this direction, originally top-heavy, one person and one car directly separated, and then two loud noises sounded in the tunnel.

The car hit the tunnel wall on the right side, and the two dogs were thrown out directly, and they fell into a dog to eat, and the two dogs wearing mechas, maintained a five-body posture, and slid on the ground for more than ten meters.

Careless, careless, scared the baby to death! Looking at the bottomless pit beside him, Ergou sat up and calmed his emotions, sure enough, the arrogant army will be defeated, isn't Lao Tzu just humming a little tune, just come to this matter.

Turn on the mecha lighting, and the tunnels on the side of the pit are all blocked, Nima, no wonder the orcs are undefended underground, and the feeling is that this is a dead end!

The small field car on the side overturned to the ground, and the wheels were still spinning.

The second dog who lost a lot of paint on the front mecha sat in place in frustration, angry with the master, I thought that I could use this underground passage to easily achieve victory, looking at the amount of earthwork that filled the tunnel, I had to dig thousands of people for a few days, right? I'm so angry, open the mask and breathe!

Take a deep breath, exhale ~ inhale ~ huh? Not to mention that the air in this tunnel is good, open the mecha mask and take a few deep breaths, adjust your mood, and soon the second dog is much calmer, and the air is cool and silky~

Cool silk, cool silk?

What does this mean, such a large-scale underground building must have a perfect ventilation system, a submarine base, an elevator, all the underground buildings in Sara City, and even above-ground buildings, well!

In a flash of inspiration, Ergou immediately got up, wearing a power mecha, and easily straightened the car, fortunately, it seems that the field car is not a big problem, except that the tires are a little crooked.

Like a big bear, the mecha two dogs got into the car again, driving the field car back, and unlike when they came, the big dog bear with scars on the car no longer hummed, the speed was also extremely slow, and the car with crooked tires still had rhythmic bumps up and down.

Originally, the military small field car, is the simplest version of the traffic aid, there is no shock absorption system at all, the two dogs in the mecha, will be turned dizzy after a while, no way, this operation did not bring a powered chassis, you can't run back.

Ergou, who endured the bumps along the way, carefully observed the area around and above the tunnel, trying to find the entrance to the ventilation system.

When he came, Ergou had the impression that he saw a large fan on the roof of the tunnel, but most of these fans are to ensure air circulation in the tunnel, and if you are lucky, you may find an air intake nearby.

Seeing that he was about to return to the starting point, except for the large fan, the two dogs found nothing.

The bumpy cart combined with the big bear and finally returned to the guardhouse, huh? If I were an architect, I would be in the center of a few tunnels, right? And the installation of fresh air ducts here, which can also take into account the huge elevator system and the cargo submarine base, must be nearby.

As soon as he looked up, Ergou suddenly found that the top of the guardhouse was not connected to the ceiling of the building, and there were rows of air grilles on the ceiling.

Nima stepped on the iron shoes and had nowhere to find it, the second dog was next to the guardhouse, parked the car and stepped on the car to climb to the top of the guardhouse, smashed the ceiling with a few punches, revealing the big air supply channel inside, which really didn't take any effort.