January 24, 438 A.D. 7 a.m

With the full cooperation of the eighteenth sister and Anna, the underwater thruster was quickly prepared, and the original active defense system of the mecha, Mr. Kalash confirmed, can also be used perfectly underwater, and underwater self-defense is completely fine.

The eighteenth sister also really made the underwater defense weapon proposed by Ergou, the blocking net.

Anna, for herself and the sword brothers, assembled the power mecha out, it is said that the comprehensive function indicators are not inferior to the X-3 mecha of the two dogs, but the appearance looks a little Q.

Li Yang's troops also reported that they had completed the site selection and installation of active defense radars and electromagnetic guns around the main base, and they could start work at any time, and all that remained was to expand the permanent defense post and station armed personnel.

President Yu Yao's transportation team began the secret transportation task of gold in City C, and all the gold transportation and transfer would be completed in one day, and under accurate measurement, it was learned that there were 132 tons of gold, and there were also a large number of precious metals and jewels in the vault, diamonds, and Ergou was naturally ordered, all of which were transported back to the underground base and kept for the future operation of the troops.

At this time, the ground bases of General Ergou were deployed as follows.

At the port base of City A, Captain Liu Yulei led 1,500 people to garrison.

The base of the stadium of General Gaia, two thousand people.

The small town of Benjamin, Li Yang's army of 4,000 troops.

A thousand people in the Golden City. City B garrisoned 1,000 troops. General Peter Pan of City C, with a force of 4,000 men.

Around the perimeter of the main base, four radar electromagnetic cannon defense posts have 200 people each.

In addition, there are a considerable number of slaves and militias who have taken refuge on their own, and the small town of Benjamin, and the base in Gaia, are still flooding with a large number of people every day, and it takes time to identify and train into qualified soldiers.

Obviously, the two dogs still lack absolute air supremacy, and the orcs have airship aircraft carriers, although at this time the main base has relatively safe, ultra-long-range electromagnetic cannon defense measures, which can ensure that the enemy who violates the airspace can be shot down.

However, at the point in time when his side lacked the offensive means of air units, Ergou believed that the threat of Sara City was relatively greater, and Sara City mastered the production of nuclear weapons and nuclear energy, so it was better to reconnoiter Sara City first, wait for large-scale aircraft to equip troops, and then take down the enemy's airship aircraft carrier.

So, at seven o'clock in the morning, the second dog, the eighteenth sister, Anna, and the sword brothers, formed a five-person team.

After breakfast, packed up their weapons and equipment early, and set off for the Golden City, the entrance of the river of the villa was waiting for them, Zuo Wei reluctantly saw them off, praying for the safe return of everyone, and also looking forward to everyone's triumph.

In order to act in concealment, the team and equipment were transported to the Golden City through a transport vehicle, and when they arrived at the large kitchen of the Ergou Villa, several people put on their equipment and prepared to dive into the waterway.

The five mechas, two tall and three short, are also different in color, one purple, one black, one pink, and two silver.

I believe that all the officials also know whose mecha they are.

The backs and feet of the five mechs are all equipped with four, quick-detachable underwater thrusters, because this mission is reconnaissance, and the road is long, so everyone did not bring too many weapons, everything is simple, and strive to complete the reconnaissance work of Sara City in the shortest possible time.

Anna's Saofen mecha was the first to dive into the water, the two silver mecha of the Sword Brothers also followed, the swarthy mecha of the second dog shook his head and followed the infiltration, and the eighteenth sister's matte purple mecha dived into the water at the end.

Originally, the eighteenth sister who didn't need to bring a laser cannon for this reconnaissance mission finally brought it, and she wanted to complete the weapon test as soon as possible.

The river was pitch black, and the thick ice and snow on the river completely obscured the already dim light of the world.

Of course, it is impossible for everyone to drive blindly, the mecha has a terrain radar with excellent performance, as well as the assistance of the sonar system, at this time diving underwater, accompanied by the rhythmic "Dingding" sound of sonar, the holographic display of the mecha helmet, perfectly displayed, the three-dimensional map around everyone, from time to time there are a huge number of fish, also mixed in, for the target that is not threatening, everyone directly chose to shield.

This is worthy of an artificially transformed canal, the river is deep and wide, looking at this situation, not to mention the tens of thousands of tons of aircraft carriers before the war, it is hundreds of thousands of giant oil tankers, which can also travel easily without barriers, and it is no wonder that there are several oil tankers parked in the port of City A.

Such a vast amount of work also objectively illustrates the strong national strength of the Osbhui Empire before the war.

Anna, who was dressed in a sao fan mecha, entered the water, and she was happy, taking the lead, driving to the extreme speed to lead the team at the front, it seems that the diving speed is much higher than the fifty knots that the eighteenth sister said before, if she didn't stop, rolling up and down in the water, cruising and cruising, doing all kinds of unknown difficult actions, she would have thrown everyone away.

The Sword Brothers have always been calm, and in them, they have never seen any human superfluous emotions, and at this time they calmly follow Anna to protect her, and the two dogs keep observing the underwater environment, alert for possible attacks.

The eighteenth sister didn't know what she was thinking, and she didn't say anything all the way, dragging the weapon box with the laser cannon and following behind.

The underwater thruster designed by the eighteenth sister is a shaftless pump jet, even if it sneaks underwater at a high speed of fifty knots, the noise is very low, and the sound of the sonar in the ears has an indescribable weird and ethereal feeling underwater.

Contrary to the expected scenario, the group marched for more than five hours without any abnormalities, and Anna's excitement at this time was much lessened.

It seems that the only frightened person is Ergou's classmate.,That night Ergou was beaten very badly by the glowing monster.,Almost lost his life.,At this time underwater,He's been worried that similar monsters will exist.。

The eighteenth sister was speechless throughout the whole process, and the terrain matching map of the mecha showed that everyone had already traveled half the way at this time, although the underwater thruster of the eighteenth sister was superb, coupled with the core fusion core of the mecha, the powerful and endless energy supply, at this time in the underground dark river, the underwater upstream propulsion, the speed was one hundred and ten kilometers per hour, and there was still more than five hundred kilometers behind.

"The radar shows that there is an underground natural cave ahead, are you tired, do you need to rest?"

Looking at the three-dimensional map on the monitor, Ergou asked everyone.

"Yes, yes! Go up and take a break, I can eat some chocolate and replenish my strength! Anna was the first to agree.

"Alright then, let's go to the rest meeting, I'll take a look at the environment by the way, to see if it is possible to build an underground supply port, thousands of kilometers away, it is still necessary in this location!" The eighteenth sister also agreed.

Soon everyone found a relatively flat terrain and went ashore, the mecha helmet turned on the lighting, the shore was full of strange-shaped rocks, and a huge cave appeared in front of everyone.

"There are no harmful gases in the air detection, and the helmet can be opened, which is a little strange, huh? It doesn't seem to be a completely confined space, and the atmospheric environment is not much different from the outside world. The eighteenth sister said.

"Ah, this is?" On the side of the flat rock, Anna noticed something unusual.

Everyone hurriedly surrounded them, and a relatively flat huge rock appeared in front of everyone, although it looked like a natural rock, but it was incompatible with the surrounding environment, the shape was too similar to a gate, and a gap could even be seen in the middle.

"This is, this is cement, camouflaged rock?" Ergou picked up a piece of ground gravel, but he didn't expect that he could easily crush the gravel while wearing a power mecha.

"Look around for switches!" The eighteenth sister said, at this time she was sure that this must be a secret building.

The crowd walked around and around, but they didn't find anything like a switch.

"Huh? I found a weak electronic signal, similar to the identification of friend or foe in the underground base, everyone wait a minute! Anna noticed something strange again, and then stood still, apparently trying to hack into the electronic device.

Ergou raised the shotgun in his hand vigilantly on the side, the eighteenth sister opened the weapon box, and assembled a huge laser cannon under the questioning gaze of Ergou, the sword brothers were still stable, standing behind Anna left and right, in case of an attack, I believe that these two guys will not hesitate to use their bodies to block all attacks for Anna.

“Bingo!” Shaoqing Anna shouted, and with Anna's excited shout, the huge and heavy imitation stone door opened to both sides, revealing a spacious and bright passage inside, which looked similar to the architectural style and materials of the underground base.

"Nana, what's going on?" Ergou took a step forward, observed and asked Anna.

"It's the original Osbhui Empire, the supply warehouse when expanding the underground dark river, the communication is old, the encryption technology content is not high, similar to the base, I have obtained the highest management authority, let's go in and take a look, it looks like this place is working normally!" Anna said and strode in.

Everyone followed closely, the spacious and bright tunnel, about a few hundred meters forward, you saw a huge warehouse, the space is the same as the warehouse of the underground base, surrounded by infrastructure materials, and some unknown giant mechanical equipment, in the center is a main control computer similar to the underground base.

"This is an excavator part? It seems that this was a supply point for the Empire to build underground canals at that time. Nana, is there any useful information on the main computer? The eighteenth sister asked Anna about the warehouse equipment.

"It's just some architectural drawings, and the visit records of the base, it seems that no one has been here since the war, and the map of the canal is useful, and it will be transmitted to you later.

This warehouse has ventilation ducts, which are directly connected to the ground, so it's no wonder that the air is fine.

Well, there are a lot of these infrastructure materials, I think I can also use these parts to assemble an underground excavator, yo, there are dozens of nuclear fusion cores in the bill of materials. Anna excitedly recounted her discovery.

"Well, it looks like the location of this space is very suitable for us to build a new underground base! Nana, I'm wondering if if you can easily take control of this place, can Sara City too? In a flash of inspiration, Ergou made an astonishing discovery.

"Well, it's not a big problem! Haha, it's really good to be an underground base here, there are underground canals for hidden transportation channels, the space is suitable, and there are even enough building materials. I guess the only problem is that we don't have transport submarines, right? ”

In Anna's mind, she had already begun to plan the feasibility of an underground base, and it seemed that it was not a matter for her to reconnoiter or even capture Sara City.