As the sun recedes in the western skyscrapers, fishing boats begin to return to port, leaving only the night cruise ships, with their searchlights turned on, sailing along a fixed course. And at this time, no second person knows what is happening in the sea.

Four meters below the waterline of the Pudong coastal wave dam, there is a sluice gate, which is overgrown with seaweed and shellfish, and most of the cement rocks under the waterline of the embankment are exactly the same, and there is nothing to see, and now the gate the size of a dog hole is opened, and a large amount of plankton and algae seawater is poured into the opening of the gate, and then a dark unmanned underwater vehicle walks out.

The submersible now represents the latest technology in Luan's exploration of the sea, and as early as Diranfez, Luan's machinery was still purely mechanical. Unobstructed film coverage makes the mechanical transmission perfect. As he returns to the Overworld, his Super Energy can concentrate the temperature difference and create ultra-low temperatures in a small area after further transformation. Luan favored electric drives.

The reason is simple, Luan wants to use tools to unleash superpowers. The amount of unobstructed film required for the mechanical transmission structure is too much, and after it is attached, it must be ensured for a long time. The use of equipment to create ultra-low temperature to cool each circuit in the machine can make the current run in the internal system without resistance. Even if the super energy is evacuated halfway, as long as the low temperature can be maintained, the machine will still be able to run on its own.

Underwater vehicles and high-altitude aircraft manufactured by Luan use electrical conduction technology. The world's normal technology tree, advanced ships, and automobiles also use all-electric transmission.

But Luan uses a fully superconducting circuit. The current is not dissipated due to the heat of the resistor, and is 100% converted into kinetic energy. Luan took a much more radical path than the people of this world.

At present, the normal science and technology tree has not applied superconducting materials on a large scale in machinery, and all practical superconducting materials need low-temperature conditions, and those gimmick-like superconducting materials at room temperature cannot withstand the current.

In practice, the low-temperature sealing of the circuit must be considered, which requires each superconductor to be wrapped in a tube and cooled by liquid nitrogen. Add a circuit is broken, for example, the outer wrapped pipe seal leaks, from the perspective of materials engineering, this kind of leakage is a very normal event, any plastic will age under the temperature difference between the inside and outside cracks, and metal, ceramic materials will also have cracks. It's definitely going to break every three or five times.

If the engineer takes it apart and looks at it, in the face of the dense pipe, check which pipe is leaking, and which section is not insulated? This Nima is deadly, and this is by no means a matter of measuring two circuits with an electric pen.

You don't see that although the staggered load wheels of German tanks in World War II have various advantages in practicality, the complexity of the staggered load wheels can kill the rear logistics engineers in maintenance. After the end of World War II, the tanks of various families were not designed in this way.

And now Lu An, who has super powers, is obviously incomparable to engineers who rely on two hands for maintenance, and super energy is much stronger than two hands for maintenance. This is the reason for Luan's adoption of radical techniques. Including this underwater unmanned underwater vehicle, it is also different from the orthodox unmanned underwater vehicle. Because the coolant of the line cooling device in the submarine is very unpopular.

Whereas, the coolant inside the cooling unit is liquid hydrogen. Liquid hydrogen is better than liquid nitrogen in terms of cooling effect, and liquid hydrogen is very cheap in terms of price, but human beings must live in an oxygen environment, and all human maintenance activities for machinery in this era are also in the air environment, and hydrogen and oxygen will explode when contacted.

Most of the serious submarine accidents in the world in the twentieth century were caused by the leakage and explosion of fuel cells, fish #, missiles, and combustible gases, which often happened to Maozi. (The remainder was crashed by a submarine drag race.) That's where the cowboys go. ）

Therefore, it is a "common sense" that hydrogen should not be used on a large scale in submersibles, but Lu An is so contrary to common sense because there will be no oxygen in the unmanned underwater vehicle, and it is all hydrogen. When an unmanned underwater vehicle is put into the sea, it doesn't matter if some hydrogen leaks, it can't explode, only hydrogen can't be destroyed without oxygen. The manufacture and maintenance of the unmanned underwater vehicle are all installed by manipulators in transparent oil and purified water. There is also no greater danger in logistical repairs.

The only thing that is a little embarrassing is that if someone catches it and knocks it with a hammer, the hydrogen leaks and may burn like a gas canister. So now, Lu An is letting this submersible go out at night, so as not to be fished out of the water by fishermen in the offshore sea at night and cause an accident.

A total of 60 unmanned underwater vehicles were dispatched on a large scale this evening, and these submersibles were dispatched to no avail, as can be seen from the shape of Lu An's design for these submersibles, which is a model of absolute peace. StarCraft Protoss Farmers (Probes) have an appearance, except for the color due to the sound-absorbing rubber covering which is pitch black. Everything else is exactly the same. Designed with this appearance, it means that Lu An didn't think about letting these things be responsible for underwater attacks at all.

The activities of these unmanned underwater vehicles on the bottom of the sea in groups do not harm anyone, these unmanned underwater vehicles rely on the pump behind the butt to spray water, quickly approach one shipwreck site after another, and after approaching these wrecks, stretch out their manipulators to close to these marine steel plates, and cut them with waterjets.

Basically, in a few tens of minutes, all the aquatic attachments on a wreck ship can be washed away with strong water pressure, and then the metal plates are cut into pieces and packed and taken home.

Of course, it is not without danger, and some of the sunken ships are caused by ocean currents and reef topography. It is not uncommon for some submersibles to crash into reefs and break down completely under complex water conditions.

For this, Lu An, who was sitting at home and sensing the situation under the sea through the rehearsal, could only sigh.

To the uninitiated, these submarines aren't great, they can navigate underwater, they can cut things underwater. It's basically a relatively successful work, but from the perspective of Lu An's own use, this is a random design and a copy of the game model. It is an experimental device, and the so-called experimental means that there is still room for improvement. The submersible hull, power, and underwater encounters to re-stabilize the current, wing propeller design. Minor adjustments are required after the use of the experimental equipment.

The real complete product should be the same as the mature industrial products on the market, fully considering the process of user use, more than no more, less than a little less.

For example, beer bottles are commonly used. It is designed with the pressure of the bottle in mind. As well as the convenience of transportation and the convenience of use. So its specifications haven't changed for decades. There won't be any other bizarre beer bottles on the market.

For example, in the early ironclad ships, the early airplanes, the early appearance was simply a group of demons, but in the later stage, the appearance was almost the same. One more is a burden, and one less is a defect.

However, the thing that Luan is making now does not have this perfection. Almost as a whole, there are dense areas for improvement.

In short, the question that Lu An is now worried about involves whether the Black Eagle and MiG who made the Red Alert in the strange mission world sent by Yuan Yi to the strange mission world, or the Banshee and Viking who created the stars.

The air units of both worlds were designed by designers according to their situation, if you want to be in the gravity and atmosphere of the earth in the Vikings, Banshees and Shadow Fighters, the kind of interstellar sci-fi aircraft. Eighty percent will be taken away by the earth's fifth-generation aircraft with stealth design and aerodynamic advantages, and they will be suppressed in quantity. Because those fighters that are common on other planets in high technology are not perfect combat vehicles in the environment on Earth.

Lu An can build all kinds of equipment, and to some extent, Lu An is quite a base car now, but he can't perfect the technology.

This kind of unmanned underwater vehicle exposes Lu An's shortcomings, the research institute of the main world has not studied the same type of scientific and technological equipment, Lu An explored it himself, combined various scientific and technological modules, and created a device full of a large number of points that need to be improved. However, thousands of rehearsals can only integrate existing technology modules, but cannot perfect these flawed technologies. Of course, if you have 100,000 emotional states, then you can do your own experiments. But how far do 100,000 emotions need to be rehearsed? Lu An shuddered when he thought about it. So you can copy it or copy it.

In reality, he fell into deep thought, and Lu An said in a self-questioning tone in the rehearsal: "My closed-door approach has shown great limitations. The technology taken from others is someone else's, after all, something that someone else designed for their own system, and it must be a problem for me to directly use it to stitch it together" Lu An suddenly thought of the history of the three families building glorious fighters on another time and space line. First-class components from all over the world, the final assembly is nondescript.

Thinking of this, Lu An frowned and said, "Do you want to inform others of my needs and let them design according to my purpose." to help me get through the technical bottlenecks I am facing.

But what can I do to these people? This world is equivalent, and without the ability to give, there is no right to demand. ”

In reality, Lu An looked at his palm, the palm of the sixteen-year-old was very white, and it was ruddy in the white. But it's this body that has the power to create terror.

Lu Ann knew that he represented great power, but that power could not force others to hand over the product of intelligent thinking. As soon as power creates an irreversible gap between the upper and lower positions, it will only become stupid by pouring fear, panic, and abnormal envy on the weaker people. Thus ignoring one's own ability to summarize, combine, and create natural phenomena.

After several missions, Luan has made two summaries of human sociology.

1: The emancipation of human productive forces provides a material basis for more people's thinking (mental work),

2: The trend of system change in human society in history is to constantly eliminate all fixed barriers between upper and lower levels, so that more people have the right to think for themselves.

Under the productive forces of primitive society, no one thinks, except for wizards and chiefs.

In the Bronze Age, productivity allowed a small number of slave owners to engage in mental work.

In the Iron Age, productivity was able to allow more people to do mental work, and more people were willing to do complex mental work, so it entered the feudal era.

Then there was the age of empires, the age of capitalism, where the productive forces allowed the merchants, the capitalists to start thinking

So much so that in the era of socialism. The productive working class, a pan-mass group, began to awaken.

In the end, however, human beings are born without any initial label (poor), define themselves by what they do as they grow up, and then all human beings are free from low tastes in their long growth, and the sign of adulthood is to develop self-worth that is willing to slack off in mental work. At the same time, the productive forces will be able to afford the mental work of all mankind, which will be the highest form of society.

And now, the wisdom of this world is manifest right. is being undermined by a situation that is inherently powerful.

"What can I provide for the needs of the people of this age? What do I offer, do people of this era really want? Lu An couldn't help asking.