After arranging the plan to increase production on the side of the Tower of Time, Xia Duo returned to his study and continued to study the communication spell. With the ready-made spells of the Arcane Empire in the projection plane in hand, there wasn't much he really needed to do.

In the time since his return from Seuventon, what he has done has focused more on integration and extension than on starting from scratch, but even so, the progress of the project has been very slow in the past six months.

Because, what Xia Duo wants to send is not a single spell, but a whole new type of communication scheme.

The Projection Plane Arcane Empire has specially set up a communications department to be responsible for communication across the territory, using a spell called [Background Communication] to link the various communication divisions in the territory like a network, forming a communication array covering the entire territory and beyond.

The so-called [Background Communication] is actually using the background fluctuations of the magic net to transmit information, which is similar to the principle of [Echo Perception] and [Magic Net Moment] that Xia Duo knew in the main plane.

The difference is that [Background Communication] uses the background fluctuations of the Magic Net to transmit information, while [Magic Net Moment] uses the background fluctuations of the Magic Net to time.

As for [Echo Perception], it's just a small spell, which is simply used to perceive the background fluctuations of the magic web, and even if you don't need this spell, you can also use intuition to vaguely perceive it.

When it comes to the depth of theory and technology, of course, the Arcane Empire has a deeper study of the background fluctuations of the magic web, and the most intuitive is that [Background Communication] is a 5-ring spell, while [Magic Net Moment] only has 3 rings, and as for [Echo Perception], there is only 1 ring.

In terms of theory, Nessreel's knowledge of the background fluctuations of the magic web is only in the preliminary application stage, while the Arcane Empire of the projection plane is already exploring the deep principles behind the background fluctuations of the magic web.

Why is there a fluctuation in the magic net? Why is this volatility? What else can be used for timekeeping and communication?

Something like that.

The Arcanist of the Arcane Empire has put forward a hypothesis that the background fluctuations of the magic web are due to the overlap and resonance of the magic net and the plane, and as for why it is such a fluctuation, it may be related to the elemental roots of the plane.

Theoretically, if the time is timed from the perspective of the plane, the background fluctuations of the magic net will not change for a long time.

Once the background fluctuations of the magic net change, it must be a great change in the plane.

It's just that this conclusion has not been verified, one is that the Arcane Empire can't find a way to change the plane, and the other is that at the moment of war, it is impossible to spare huge manpower and material resources to study this.

It is sufficient to be able to find a hypothesis and to be able to develop a Background Communication based on it.

However, in this regard, Xia Duo has actually verified some of it, proving that the background fluctuations of the magic net are indeed related to the plane, and the background fluctuations of the magic net of the [Blue Crystal Plane] are completely different from the main plane.

……

The communication array constructed by [Background Communication] is indeed very convenient and has a large coverage, and any caster with relevant permissions can use the communication array to contact people who are extremely far away.

It's just that there is a question here, who should be in the hands of this communication array?

Is it the Austrian Federation? Or the Severington Parliament? Or maybe it's some Grand Arcanist?

The Arcane Empire is an empire with a high degree of unity of power, and even the Grand Arcanists are subservient to the leadership of the Great Sage, but Nessreal is different.

The Arcane Federation is a product of contradictory compromises, and if the Grand Arcanists have not been able to reach a consensus, how can they tolerate a unified communication array?

Except for a small number of Grand Arcanists, the lords of various places are probably not willing to use such a communication array that is not under their control, after all, those who master the communication array can "see" all the communication information.

Without changing that, no one would accept such a communication array.

And the method that Xia Duo thought of was also very simple, just two points-

Don't build a full communication array, as well as encryption!

The biggest advantage of the communication array is that it is similar to a magic net, and anyone with authority can communicate with it, but aside from this, [Background Communication] is still a very powerful communication spell.

It's a long distance!

If it weren't for the convenience of more people, or even the need to build a communication array at all, a single spell could also be used, but it had a high cast threshold of 5 rings.

In order to adapt to the actual situation of Nesser, Xia Duo's communication plan has weakened the ability of this spell to a certain extent, specifically, to create a communication magic weapon.

After Xia Duo's simplification, [Background Communication] no longer transmits images and sounds, only short text information, and only 2 ring levels, which has reached the minimalist level that Xia Duo can do.

Without the Magic Net Strings of the second layer of the Magic Net, it is difficult to load information on the background fluctuations of the Magic Net, and then spread with the help of the background fluctuations of the Magic Net.

At this point, it is actually possible, and Xia Duo estimates that Lord Doraison's new communication spell does not necessarily have such a low threshold.

However, since it is a whole communication scheme, it naturally cannot be so simple, in addition to encryption measures, Xia Duo also needs to design a specific communication device to facilitate more people to use.

In addition to the princess's reward, using the eternal magic technology that Tirac is researching can reduce the cost of manufacturing magic weapons, and you can also make a lot of money by selling communication magic weapons.

Now Xia Duo is stuck in the encryption measures and the communication device.

The Arcane Empire of the projection plane also has encryption, but their encryption is provided by the communication array, and the information directly transmitted by the spell is not encrypted.

It is possible that the [Short Text Background Communication] of the 2nd ring may become the [Encrypted Short Text Background Communication] of the 3rd ring, 4th ring, or even higher.

In addition, there is another problem, if it is to encrypt the spell book, it doesn't matter, it's just a matter of a few transformations, but if you add [encryption of information] at the spell design level, it's not what Xia Duo is good at.

It's not like typing code on the globe, just calling the relevant function.

In spell design, the analogy of typing code is to write out the specific operation process of a function. It's simple, and it's easy for others to crack; It's complicated, which is equivalent to increasing the difficulty of casting spells and raising the threshold for use.

How to design a cryptographic system that is relatively simple in form, but still difficult to crack, is indeed a problem.

Xia Duo simplified [Background Communication] for more than ten days, and only considered encryption for three days, but unlike the previous simplification, although it took a long time to simplify, there was progress every day, but now, three days have no ideas.

"Sad, sad!"