As for the German side's doubts, China did not hide them, and the stakes were already very clear on the way to the North Atlantic when sending submarines to the North Atlantic, and the relationship between China and Germany was gradually established in the past few years.

In the environment of the Republic of China in history, some people can clearly see that China's great enemy must be Japan, and it can be compromised with anything, but it cannot be Japan, the distance between China and Japan is too close, as long as one side rises, the other side must be a stepping stone.

China and Germany are thousands of miles apart, there is no conflict of interest in the middle, in the long-distance and close attack, is a natural ally, especially when Germany almost single-handedly challenged the entire power, even a somewhat sluggish Chinese high-level can also see.

The strength of Britain in this era is obvious to all, especially the strength of the sea and colonies, the rise of any country, there must be space, the world has no room to rise, or dependent on a great power like Britain, like Japan in the past.

China is a big country, and Japan has a completely different background, a big country will inevitably rise, Napoleon once said that China is a sleeping lion, although there is an exaggeration, but in the word sleeping lion, it can be seen that Napoleon's jealousy of China, such a huge, with infinite wealth of the country, once embarked on the road of industrialization, with a modern industry, what kind of power will burst out.

In fact, what Yang Yuanzhao did in Baotou was just an introduction, what really made China rise was the heritage of a great power and a huge population, as long as it embarked on the right path, it would roll towards this road.

China is thriving, China is developing rapidly, but the wise man still sees the problem, in the case of domestic development to the extreme, if China wants to gain sufficient status, it will inevitably expand outward, then it will inevitably face the old powers.

Caucasians have ruled the world for many years, if it is at a time of world peace, the Chinese will come out, they will inevitably be hit by the whole world, even if China has Yang Yuanzhao and has an all-in-one machine, when facing the blow of the world, I am afraid it will be quite difficult, victory may be possible, but the price paid is too much.

When the European war broke out, Germany began to challenge the British hegemony, the wise man saw the opportunity, Yang Yuanzhao supported Germany's initiative, and got the support of many people, otherwise, the huge amount of support could not be in place at all, the nine battleships of the Scheer fleet, even the Chinese Navy was not equipped, so it was given, the acquisition of cultural relics plan, manpower plan, although these really increased China's strength and heritage, but in this era, it is not essential, and only let Germany in front, Let Germany confront the great powers led by Britain and the United States, China's rise will not be so abrupt, and even if there are some out-of-the-ordinary places, it is not easy to cause problems.

In fact, China has gained a lot of benefits in this initiative, the establishment of Lanfang, the occupation of the entire Southeast Asia, and even Siberia, it can be said that China's current huge territory is almost directly related to this initiative, and the merits of the soldiers in the bloody battle cannot be erased, but if it were not for Germany, it would be impossible for China to obtain so many results so quickly under the premise of confronting the whole world.

It is precisely because of this that China is almost responsive to Germany's needs, and when Germany is hit by sonar and the submarine force suffers heavy losses, sending submarines to it will inevitably attract Germany's attention, and there are two ideas at that time, one is that China is in the past, how optimistic the Entente is, in short, it will be suspicious, and it is likely to be seen as Germany doing, and the other idea is to implement it now.

This is taking into account the overall situation, the close relationship between Germany and China, for the time being, is not suitable for moving, for a small submarine, and Germany cracks, is the high-level do not want to see, not to say that the submarine is not important, the submarine is a terrible weapon, if the submarine technology is really developed to the extreme, such as reducing the noise to about 90 decibels, I am afraid that China's new generation of sonar, may not be able to be discovered, such a submarine will become a black hole in the ocean, become the most powerful attack weapon on the bottom of the sea, It will even threaten the aircraft carrier battle group of the future development of China's main forces.

However, the arguments of naval experts still persuaded the high-level, don't look at the present, the sound of the submarine has been lowered, reaching 110 decibels, only one step away from the 90 decibel ocean black hole, but this step is not so easy to take, the reduction of decibels, at the beginning is relatively easy, before just no one thought of this problem, even if there is no accumulation of Germany, in a short period of time, from 220 decibels to 180 decibels, but below 120 decibels, For each decibel reduction, the effort required is more than 10 times that of the previous one.

Mechanical creation, involving the collision between water and steel, no matter how much you consider fluid mechanics, before there is no big breakthrough in body size, it is difficult to reduce every decibel, to the German side 110 decibel version, without giving them the concept and knowledge of the system, if they want to lower, it is really more difficult than ascending to the sky.

The most important thing is that sonar is no longer the only tool for China to discover submarines, China has begun to research, drag sonar, and even enter the field of underwater radar, with higher antennas, larger networks, to discover a point in the network, a key thing to discover underwater submarines in later generations, the investment is huge, but in the case that others are not aware, it is a natural advantage.

In the telegram, there is very little that can be explained, but simple things, such as the existence of the attraction tile in the whole submarine, can absorb the noise inside the submarine as much as possible, without increasing the sound of the submarine, this is a big project, the other is the dual system, in the current German ocean-going submarines, or the use of diesel engines, not only need a lot of air, the underwater running time is compressed to a very short extent, every once in a while, must be ventilated, which is also the fundamental reason why he is often found.

China's Qin-class, designed a dual system, that is to say, the air in the submarine, as long as it can ensure the breathing of submarine personnel, large compressed air cylinders, can accommodate a huge amount of air, which is also the fundamental reason why Qin-class submarines can sail underwater for a long time, underwater does not use any power system, but turns to the battery and electric motor propulsion, directly reduces the noise to several grades, plus hydrodynamics, for the modification of the propeller, without reducing or reducing the kinetic energy under the premise, Reducing the sound produced by the propeller cutting the waterline, these combined are the glory of the Qin class.

After the Germans read it, they found out that they were wrong, double power is one aspect, so it is like window paper, a poke will break, but Germany did not expect that from this, at least the decibel can be reduced from 180 to below 150, the sound of the underwater power system, even with sound absorbing tiles, can not be completely removed, in addition to this aspect, the other aspect is fluid mechanics, with fluid mechanics, can solve the problem of water resistance, especially under certain rate conditionsThe use of fluid mechanics to change the structure of the ship, the hull structure without use, of course, also includes the underwater sound, with multi-sided processing, reducing the hydraulic cutting method, which greatly reduces the appearance of sound.

To be honest, the submarine experts who can sit here are all German submarines, and even the masters of ships, their professional concepts are very profound, after the appearance of sonar, they also devoted themselves to research, how to reduce the sound of the submarine, in order to avoid the detection of sonar, and achieved a little effect, but compared with these, it is simply too far behind, they have worked hard to reduce it from 220 decibels to 180 decibels, more in sound insulation, and not too good, next, every step is extremely difficult, Some experts even believe that it is almost impossible to reduce the probability of a submarine being discovered from the sound level, and sonar is the natural enemy of the submarine, and the submarine will either go to the armored type, or just like the torpedo boat, speed up and use torpedoes to fight a decisive battle.

But I never thought that China actually had a solution, not only reduced the amplitude of the sound to 110 decibels, but even moved towards the most terrible black hole in the ocean 90 decibels.

Countless fresh knowledge, so that the Germans can't stop, they also want to get more from the Chinese side, but these are not a simple telegram can be solved, after a short exchange, the German side has basically determined the strength of the Qin class, if a certain breakthrough is made in these aspects, there is no problem in making the Qin class, which proves the strength of this submarine, there is no problem in placing an order, the German side is in a safe place, proposed to board the Qin class to see, He also asked the Chinese submarine to give a simple exercise, so that the German Navy could feel the performance of the submarine up close.

In this regard, the Chinese side has long had the intention of exporting the Qin-class, and it was agreed, both sides are waiting, waiting for the return of the A fleet, and then a simple exercise will be carried out on this aspect, after the exercise, it will be determined how many submarines to import, an order that has a huge impact on the entire European war, just like that, under a few telegrams, it was finally determined that a weapon that made the Entente frightened once again appeared in the European theater, and his future impact on the war between the two major groups, Bigger than a perfect battleship like the Fantasy class. (To be continued.) )