Setting aside his concerns for the near future, Su Wu turned his attention to the Zhenhai City Shelter itself.
During the precious three-hour window of safety currently available.
Out of the seven large undersea tunnels that had been constructed.
Six of them were operating subway trains, with one train departing every 1 to 2 minutes on each track.
This wasn't the maximum capacity of the tracks, but it was the limit of what Zhenhai City and the Linhai Shelter could handle in terms of transfer.
Both passengers and supplies required a certain amount of time to board and disembark from the trains.
With trains departing every two minutes.
This meant that every two minutes, Zhenhai City had to load over 80,000 people and more than 13,000 tons of supplies into a total of 54 subway trains.
And have them all depart simultaneously.
Meanwhile, at the Linhai Shelter.
Within the same two-minute window.
Not only did they have to receive the 54 subway trains transporting people and supplies.
They also had to load the previously emptied 54 trains with Spider Robots and various equipment, sending them back to Zhenhai City.
This back-and-forth operation.
Meant that the station area of the Linhai Shelter had to be capable of accommodating over 100 subway trains simultaneously.
And this wasn't even the final number.
Considering that even though the trains had been modified, with all seats removed and the sides of the carriages fully open to allow quick loading of pre-packed supplies in containerized form.
The trains couldn't possibly complete all unloading and loading within two minutes of arrival.
In reality, the station area had to be doubled to meet the minimum requirements.
Such frequent train scheduling, such a massive transfer of population and supplies.
It could be said that this had pushed the potential of Linhai, once an ordinary large shelter, and even Zhenhai City, to its absolute limit.
It was impossible to increase the transport capacity any further under these conditions.
However, while conventional population and supply transport couldn't be sped up in the short term.
Certain special resources weren't subject to these limitations.
At the last undersea tunnel where no tracks had been laid.
It was ultimately divided into two levels.
The upper level was an 8-meter-high six-lane highway, allowing various heavy and large trucks from Zhenhai City, as well as the military's large weaponry and equipment, to pass through.
The lower level was a 4-meter-high area divided into various types of transport pipelines.
Specifically designed to transport all liquid materials, including fuel and other chemical raw materials.
Liquid resources from Zhenhai City could be transported through these pipelines at an average speed of 10 meters per second, entering huge transfer pools inside the Linhai Shelter.
From there, they would be transported to temporary warehouses built on the surface.
"Liquid resources like fuel don't have high storage requirements."
"And they don't have significant value that warrants strict preservation."
"So they don't need to occupy the precious internal space of the Linhai Shelter."
"They can be completely stored in temporary surface warehouses."
"According to the pipeline transport speed."
"800 cubic meters of fuel can be transmitted per second."
"That's nearly 3 million cubic meters per hour."
"Meanwhile, the other six undersea transport channels can only move a combined total of two to three million people and approximately 400,000 tons of materials per hour."
"Given such massive quantities."
"Despite fuel having the lowest per-unit value among all resources."
"Its overall cost-effectiveness."
"Actually ranks first."
"Though there might be some additional risks down the line."
The biggest risk for these low-value liquid materials lies in their storage environment.
They are mostly stored in temporary warehouses on the coastal surface.
There's a significant chance they could be affected by storms and earthquakes from Zhenhai City.
Additionally, due to their enormous volume and extremely low unit value.
In Su Wu's transport priority list, they are ranked at the very bottom.
For a long time to come.
They are bound to remain stranded near the coastline.
The combination of these two factors.
Means there's a considerable possibility that even if Su Wu successfully transports them from Zhenhai City to the vicinity of the coastal shelter, a large portion could still be lost in subsequent unforeseen events.
However, no matter what.
Just by utilizing a portion of one undersea channel's space.
Nearly 10 million cubic meters of fuel and other chemical raw materials were transferred within a safe window of over three hours.
This achievement alone is already a huge win.
Asking for more would seem somewhat greedy.
"It's a pity the distance between the two locations is just too vast."
"Using conveyor belts for the entire journey is too costly and hard to break even within three hours."
"Otherwise, dedicating half of the undersea channels to high-speed conveyor belts could speed things up a bit more."
While Zhenhai City continuously transports people and materials to the coastal shelter.
Su Wu is also sending the mechanical army gathered at the coastal shelter, along with some specialized equipment, back to Zhenhai City.
The mission of these robots.
Is to replace Zhenhai City's original management and armed teams, maintaining order there and taking over the material transfer operations.
Humans, after all, are not like robots.
Faced with the threat of death.
They are extremely prone to panic and unpredictable destructive behavior.
Given the situation in Zhenhai City.
It's clear that as time goes on, the hope of maintaining order and transferring materials cannot be placed on humans.
Only by having a sufficient number of mechanical armies take over can the initial high transport efficiency be consistently maintained.
Of course, this approach.
Also carries a certain element of gambling.
To keep the vast Zhenhai City shelter running smoothly and ensure a material transfer efficiency of at least tens of thousands of tons per minute.
The mechanical army Su Wu sends to Zhenhai City.
Must include at least over 400,000 Spider Robots.
If all these robots were to be lost there.
It would be a significant blow to Su Wu's military strength.
However, compared to the potential gains.
This risk is worth taking.
Not to mention.
For every additional second of normal transport maintained beyond the initial safe window of over three hours.
Just in terms of fuel benefits, converting it into electricity could generate nearly 3 million kilowatt-hours.
The electricity consumption of a small rural courtyard in Jianghe City, which now houses 70 million people, is almost equivalent to the total hourly power usage.
Three hours after the completion of the underwater tunnel.
As the safe time was about to run out.
The environment outside the Zhenhai City shelter began to deteriorate further.
Above it.
A vast storm gradually shifted its core area over.
Dense fragments of ice, rocks, and other debris, almost like a torrential downpour.
Were swept up by the fierce winds.
Violently colliding with all protruding objects on the frozen sea surface.
Hundreds of skyscrapers, which even high-powered aerial bombs or nuclear weapons might not completely destroy.
Collapsed in droves amidst deafening roars.
Zhenhai City.
Once one of the most famous mega-economic cities in the Eastern Continent before the apocalypse.
The last remnants of its surface.
Were disappearing at an astonishing speed at this moment.
Beneath the frozen sea surface, the cold seawater was also restless. It surged at a faster pace than usual, fiercely scouring the shelter's exit structures and the seven massive, lengthy underwater tunnels.
The final result even caused slight unstable vibrations in the underwater tunnels themselves.
All anomalies indicated that a massive threat was imminent.
Jianghe City, rural courtyard.
Compared to Zhenhai City, shrouded in a giant storm capable of tearing apart steel.
The climate here was as calm as another world.
Underground, the 70 million residents living here.
Continued their daily routines of work, study, and play as usual.
First underground level, control center.
On the previously intact holographic map of Zhenhai City.
The parts above the sea surface had mostly turned gray.
That meant the monitoring devices Su Wu had deployed there had gone offline on a large scale, no longer providing detailed real-time intelligence.
However, thanks to the protection of the ice layer, seawater, and the seabed rock layer.
The Zhenhai City shelter below remained in relatively good condition overall.
Even if occasional unexplained vibrations transmitted into the shelter's interior.
Under strict information control.
The people still stranded here were unaware of what this meant.
Maintaining a sufficiently stable order.
Continuing their work diligently or queuing up to board the subway trains.
Only, some observant individuals.
Based on the surrounding busyness and the subtle clues revealed online.
Could somewhat guess that the situation outside was probably not optimistic.
This led to the overall atmosphere within the shelter.
Becoming increasingly tense as time passed unknowingly.
Boom! Three minutes after the safe time expired.
A violent tremor suddenly spread throughout the entire shelter.
On the holographic map.
The once massive Zhenhai City shelter, resembling a supercity.
In almost half a second, about 3% of its area turned deep red.
Then, starting from those deep red areas, large swathes of light red continuously expanded outward.
"Warning, shelter exterior wall breached."
"Seawater infiltration detected."
"Warning, an area of abnormal high temperature has been detected."
"Plantation No. 207 has been extensively burned."
Multiple consecutive warnings appeared in several deep red corners of the holographic map.
Some real-time surveillance footage.
Ranging from 7 to 10 inches in size.
Unfolded beneath the warning texts, displaying the ongoing situations there.
Su Wu focused his gaze.
He could clearly see that a large amount of cold seawater was pouring into the corridors and rooms inside the shelter through cracks in the outer walls.
Sweeping away all the furniture, decorations, and ornaments along the way.
In a plantation area on the 9th underground level, the deepest part of the shelter.
A stream of deep red magma had also emerged.
Rapidly devouring the planting racks and grain storage warehouses there.
Fortunately, due to prior arrangements and relocations.
These unimportant peripheral areas of the shelter were now devoid of any residents.
The casualty count remained at zero for the time being.
Simultaneously, 10 seconds after the unexpected event occurred.
The Artificial Intelligence that had taken over the entire Zhenhai City shelter had already begun implementing countermeasures.
Dropping down isolation fire doors.
Completely separating the seawater and magma from other areas.
"The tremors are rapidly subsiding."
"It seems this eruption is intermittent and shouldn't last too long."
"The worst-case scenario hasn't occurred."
After observing for more than half a minute and noticing that the damaged areas of the shelter weren't expanding further.
Su Wu slightly relaxed.
This meant his gamble hadn't failed at the very first step.
It also meant that the more than 28 million people still stranded in the Zhenhai City shelter.
Now had the opportunity to start queuing for evacuation.
"All subway trains, suspend material transportation."
"Switch to prioritizing passenger transport."
"Except for those queuing at exit stations to board trains."
"Others abandon their original tasks and concentrate on moving to safe zones."
Su Wu issued the pre-prepared plan.
After the initial three-plus hours of transportation.
The most valuable rare resources in Zhenhai City had been mostly relocated.
The remaining materials, while still quite valuable.
In Su Wu's eyes, they were no longer as important as the population.
Thus, the operation mode naturally began to tilt towards prioritizing population relocation.
However, this tilt was limited to the subway.
In the only undersea passage with a paved road.
The trucks traveling above were still transporting various materials.
And beneath them, in various pipelines.
Liquid raw materials, mainly fuel, were still flowing.
Their efficiency in transporting materials was far higher than transporting people.
There was no need for change.
At the 10th minute into the danger period.
A large number of Spider Robots began rushing to the edges of the damaged areas in the shelter and around the 7 exit stations.
Using Rapid-setting Cement to perform high-intensity reinforcement there.
Simultaneously.
The Artificial Intelligence, through the wireless headphones already widespread among Zhenhai City residents and the not-so-numerous humanoid robots.
Organized people in the outer residential areas to carry their personal belongings and retreat to the safe zones deep within the shelter.
This was Su Wu's mercy towards them.
And thus, in the specific execution process.
Slightly different from before, the robots did not take any coercive measures against those who stubbornly tried to delay or outright refused to leave.
After a simple reminder proved ineffective, they simply stopped paying attention.
Allowing those people to remain where they were.
As a large number of people gathered towards the core area of the shelter.
Most parts of the Zhenhai City shelter quickly became deserted.
Almost all factories also began to cease operations.
Their equipment, after cooling down, was dismantled, packed, and transported to the vicinity of the train station, awaiting transfer.
The basic infrastructure of the shelter, such as power generation, ventilation, and temperature control systems, continued to operate normally.
However, those in charge of operating them had already been replaced by robots.
Additionally, a large number of independent small-scale power generation devices and air purifiers were equipped.
To ensure that even if the power generation facilities were destroyed by the disaster, electricity and life-sustaining air could still be supplied to critical areas.
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