I remember that in the copy of "The Day After the Day" that after the local environment stabilized, the lives of people in the shelter were actually quite boring.

If Lu Yu hadn't taught everyone to play mahjong at that time, I'd probably have been crazy at home during the months I was trapped in the building.

Now that the Ark is sailing on the sea, the environment we live in is relatively closed.

But unlike the copies I have experienced and in many doomsday movies I have watched, the crew on the Ark lived a fulfilling life.

In addition to the normal cruise, maintenance and security work of the Ark, the schools on the Ark teach in an orderly manner. Now, elementary and middle schools have been simply divided according to different progress.

At the same time, after the weapon system on the ark was fully upgraded, soldiers from various positions were also meticulously training.

Not to mention the technical workers trained by Lu Yu, just studying the technology that Lu Yu has already taught has invested almost all his energy.

Thanks to Arnold's cultivation capacity, with the current sufficient supply of fresh water, the supply of fruits and meat on the Ark is relatively sufficient.

In addition to the planned consumption of stocked flour, rice, etc., a small number of staple foods on the ark use fresh potatoes, corn, etc. grown by Arnold to ensure the taste, while most of them are starch produced by treated algae.

Although these starches have a bad taste, they are already the most acceptable algae production food on the Ark. After Lu Yu's improvement, at least there is no unacceptable odor.

The planting workshop mainly solves the supply of fruits and vegetables on the ark. Although it cannot be as rich as on land, everyone can now get 300 to 500 grams of fruits and vegetables every day, which is definitely a luxury for long-term sea navigation.

The food produced by algae is supplied in large quantities to the breeding workshops. Although humans sneer at the strange taste of these foods, poultry and livestock are not that picky.

When I boarded the ship, the ark carried many kinds of poultry.

But after a period of breeding and adaptation, now it mainly breeds chickens and pigs.

However, although the feed is sufficient, the maritime farming is still not as good as on land. Even if various antibiotics are used, the survival rate and growth rate of these poultry and livestock can only barely maintain a minimum supply.

With Lu Yu's technical support, a special intelligence center was established on the Ark.

The receiving device continuously receives satellite channel signals and radio propagation signals.

The elites with the highest level of education on the Ark were gathered here to monitor and analyze these information 24 hours a day.

The intelligence room at the core of the Ark did not even have a window, and the little fat guy in charge seemed to have some bad taste, using the dim light to lay the inside full of a tense atmosphere.

However, the work of the intelligence room is indeed very tense, because the communication signals that can be intercepted are much busy now than when the end of the world just came, and encrypted communications are everywhere.

To obtain useful information from it, you must try to crack it.

The core of Ark cracking work is not someone else, but the Daisy family.

To be precise, the core work of communication decryption was done by Daisy's old father.

When this old physicist was young, he participated in the military's cryptographic deciphering project and had extremely high mathematical attainments.

Although communication technology has been changing with each passing year, it is ultimately based on mathematics.

At first, when I received those encrypted communications, no one thought about how to crack the information.

But the old man is a dissatisfied with his old age. With the help of his daughter Daisy, he relied on his excellent mathematical ability to crack several important messages.

It was the internal communication of an ark fleet. The first information to be cracked was that this fleet had just started a war with other fleets and was fleeing north.

Then the old man worked sleeplessly for two days and two nights to completely crack the communication encryption methods of the fleet.

Then everyone discovered the seriousness of the problem. This fleet had three ten thousand-ton arks and powerful force.

After being defeated in the waters near the equator, one of the arks was severely damaged and the fleet fled in a hurry to the north.

The route of this fleet happened to cross the new route of Lu Yu’s Ark. If everything remains unchanged, the two sides would meet in sixteen hours.

Fortunately, everyone obtained the information in time. The Ark immediately changed its route, avoiding this mighty battle-prone fleet of the Ark, and avoiding possible huge losses.

This also made everyone realize the importance of intelligence work, so Lu Yu spent a lot of effort to improve the hardware facilities of the intelligence room and strengthen the Ark's force.

The atmosphere in the intelligence room at this moment is solemn. In addition to the mechanical sounds generated by the ark's navigation, there are keyboard typing and file transfer sounds.

Lu Yu was invited to the intelligence room by Xiaopang, and his appearance made the atmosphere even heavier.

Because Lu Yu's status to Fang Ark was as tall as a god.

Now that something is about to appear in person, Lu Yu undoubtedly means that Fang Ark is facing a huge challenge.

Brother Xiaopang whispered in Lu Yu's ear: "The news has not been made public yet, and only the core personnel in the intelligence room know it.

Once everyone hears the news, it means war. I think it is better for you to appear first at this time.

You have locked yourself in the house these days. What happened?

I feel that your temperament has changed a lot from a few days ago.”

Lu Yu patted Xiaopang's back: "How do you think the changes have changed?"

"In the past, you looked handsome. No matter how calm and low-key you are, you can't hide the dazzling light.

But now you really feel as calm as a stone. If you don’t pay attention to you deliberately, you may even forget you.”

Brother Xiaopang said thoughtfully: "But I have no way of knowing your affairs. People of the same rank have all different characteristics, not to mention that we are completely different."

"Don't worry, I have some insights and may be able to become stronger.

Not to mention that some of these are nothing, we have no choice but to escape to the North Pole now.

Even if there is a geological change, it is still a polar region. Being a group of Eskimos in the new era will not be very easy."

Lu Yu had no trouble in his heart. Since he had to face it, don’t look back.

When he walked to the center of the intelligence room, Xiaopang coughed a few times and attracted everyone's attention.

He and Lu Yu nodded, as if after obtaining Lu Yu's permission, Xiaopang said: "Everyone, based on the latest deciphered secret telegrams, communications and seaplane adventures, there are at least three ark fleets around us.

At least one of them can be confirmed to have discovered our existence and is aggressive to us.

Please look at the screen. The location of the three fleets is only two hundred kilometers away from us.

Their routes are interlaced, and according to calculations, we have more than 80% chance of meeting at least one fleet.

The current era is the end of human civilization on Earth, and the rules of civilization have disappeared.

We have seen the tragedy of an ark and incorporated the remains of that ark into us.

This reminds us that this is an era of prey on the weak, and if you are not careful, you may be doomed.

Now, we must be prepared for war.”

As he said that, Xiaopang clenched his fists and was speechless for a long time. He thought of the worst result. As a reincarnation person without any golden fingers, perhaps this will become his last copy.

Lu Yu saw that Xiaopang's mood suddenly became depressed, and gently patted his back, then took the loudspeaker and walked forward to welcome everyone's attention.

Everyone stood solemnly, waiting for Lu Yu's speech.

But Lu Yu didn't say much: "Listen to my orders, issue warning notices, the ark entered a state of war, and everything went according to the plan.

Let the command center be prepared and I will give a mobilization speech to all the staff later.”

War, war, war!

From the moment the remains of the ark were discovered, everyone realized that war would come sooner or later.

Lu Yu upgraded the ark bit by bit, upgrading the ark, which was originally just a major refuge and survival, into a three-body ark warship with powerful force.

Whether it is a special combat position or other positions, we will continue to carry out militarized training.

Even the children on the ark will find the fastest route to the security cabin on the ark as soon as the battle alarm sounds, so that their parents and relatives can participate in the battle with full concentration.

The moment Lu Yu's order was issued, an alarm sounded in the ark.

The red alarm lights flashed everywhere in the ark. With the announcement of the enemy information, everyone understood that the day was finally here.

Turrets, missile silos, rocket operating tables, air defense systems, melee protection systems...

Members of each combat post rushed through the passage, sending orders to each other while putting life jackets on their bodies.

The old and weak were placed in a scattered safety cabin. Everyone had no time to say goodbye to each other, nor did they need to say goodbye. The war in the Ark prospered and lost, and the only thing they had to do was to repay their relatives with great confidence and firmly believe that they could win the final victory.

At the command center, Lu Yu sat on the command chair.

The broadcast system was connected, and the old captain signaled to Lu Yu. Lu Yu picked up the communicator and began to mobilize the speech to all the staff.

Lu Yu's speech was inspiring, but everyone must bury their passion and excitement. At this time, only by doing their own part is the greatest contribution to the Ark.

The Ark now has four seaplanes and one helicopter. The two additional seaplanes were designed and manufactured by the craftsmen on the Ark after Lu Yu built the diesel engine.

The original seaplanes and helicopters have also been prepared and modified. Now these aircraft are equipped with small radars and cannons, which can optionally carry rockets or small missiles.

This flight team consisting of five flight institutions is uniformly dispatched and commanded by the command center. Now three of the seaplanes are sent out to start the first round of long-range reconnaissance.

The seaplane was transported from the ark hangar to the water and took off in different directions amid the cheers of the crew.

If we follow the previous state, we will have to work hard to store and fix the floating island workshop built by Lu Yu.

However, some time ago, Lu Yu considered that the towed floating island would cause inconvenience, so he disassembled all the equipment back to the ark. Anyway, the ark's current displacement is still abundant.

The active radar on the ark can now detect distances of hundreds of kilometers, and the active sonar system can also detect distances of dozens of kilometers.

However, the energy signal of these two is too high. Once enabled, it will be equivalent to exposing the entire ark to an electromagnetic environment.

So now the ark is searching from a long distance through aircraft, while the ark relies on passive sonar and passive radar at close range.

At the tail of the hull in the middle of the ark, the sonar group orderly releases the long drag-type passive sonar into the sea water.

The intelligence room was nervous and stared at their own screens, for fear of missing a little radar signal or sonar signal.
To be continued...