What Is the Fourth Dimension?

[Back to my choice of ultimate martial soul this time...]

["Herrscher of Reason Divine Core," also a God King-level martial soul, wielded the fourth-dimensional authority of "understanding"!]

[With a single thought, comprehend all the principles of the world; with a single glance, see through the essence of all things. Omniscient and omnipotent, reproduce truth!]

[The most fundamental core abilities of this authority, "understanding," are "Analysis of All Things" and "Construct from Nothing."]

[Nothing within the Herrscher of Reason's line of sight could escape the Divine Core's deconstruction.]

[All matter, technology, martial souls, soul beasts, and even the Soul Power drifting between heaven and earth would be instantly deconstructed by the "Divine Core"!]

[Layer by layer, it stripped away external appearances and reached the essence of molecules, atoms, and even more minute microscopic particles!]

[Once the principles behind any technological creation were thoroughly understood, as long as enough raw materials were provided, one could ignore production lines and create something from nothing!]

[To put it as plainly as possible, a single sentence could sum up the power of this Divine Core.]

[The "Herrscher of Reason Divine Core" transcends the shackles of the three-dimensional universe. A technological creation comparable to the fourth dimension, it possesses the authority to elevate low-dimensional life forms into the fourth dimension!]

[As I said before, true dimensional suppression is absolute domination. It has never been a contest of brute force, but an absolute barrier between levels of life, leaving no room for resistance!]

[A writer's pen can directly define the form, rise, and decline of a one-dimensional world without needing to follow any logic.]

[When a painter personally tears apart a painting crafted with painstaking effort, to the civilizations within that two-dimensional world, it is a cataclysmic apocalypse of collapsing skies and shattered earth! It is an earth-shattering, world-destroying disaster beyond the understanding they could exhaust their entire lives trying to grasp!]

[Not to mention that the Herrscher of Reason itself is the most unsolvable judge of all technological civilizations within the three-dimensional universe!]

[To be honest, in the worldview of the Honkai Plane, Herrschers were originally executors of the Honkai God's will.]

[Yet every Herrscher of Reason throughout history had been a born rebel. If not for that, humanity's civilization in the Honkai Plane would have long since failed to survive...]

[Of course, the universe is eternally undergoing a process of increasing entropy. There has never been any absolutely invincible power.]

[Even fourth-dimensional technology like the "Herrscher of Reason Divine Core" cannot escape the law of gradual growth.]

[But once the Herrscher of Reason fully develops, I will be able to easily carry out dimensional suppression in this three-dimensional universe known as the Douluo Continent!]

[Dimensional suppression may be absolute domination, but no matter how unbeatable an authority is, it still needs a medium to manifest in reality.]

[Just as a writer needs to hold a pen before freely altering the course of a one-dimensional world, and a painter needs to tear up a painting before destroying an entire two-dimensional world...]

[Right now, I have only initially linked with the "Divine Core." I have yet to forge my own fourth-dimensional "pen."]

[I'll keep a low profile and develop for a while. Once my strength has taken shape, I wouldn't mind protecting my Douluo Continent.]

Soul Land Qian Renxue: "Protecting my Douluo Continent?"

Heaven Dou Imperial Palace, main hall.

Qian Renxue, disguised as Xue Qinghe, sat upright upon the throne. She appeared to be reviewing memorials, yet her gaze had never once left the Diary Copy.

She suddenly discovered that reviewing memorials and handling state affairs while secretly glancing at the diary's updates gave her an especially pleasant feeling of slacking off.

"Protecting my Douluo Continent?"

Qian Renxue's hand stopped as she turned a memorial, and a trace of astonishment flashed through her cold eyes.

Had this youth's ambition already swelled to such a degree?

He had clearly only just awakened his martial soul and had not even touched the threshold of a Titled Douluo, yet he spoke of protecting the entire Douluo Continent.

If this still counted as keeping a low profile, then she had nothing more to say.

"Could this Divine Core martial soul truly possess such unimaginable abilities?" Qian Renxue murmured softly, her brows slightly furrowed.

If that were not the case, an ordinary soul master could never possess such confidence to look down upon the entire Douluo Continent.

At that moment, Qian Renxue recalled the theory of dimensions explained in the diary. An inexplicable, bone-chilling chill rose from deep within the girl's heart.

Merely the tip of the iceberg revealed through those words was enough to give one a glimpse of the despair brought by dimensional suppression...

That was not a gap in Soul Power, bloodline, or divine rank, but an absolute chasm in dimensional level and life form!

It was the utter, complete despair of low-dimensional beings facing high-dimensional existences, with no hope whatsoever of turning the tables from beginning to end!

It was not only Qian Renxue. At this moment, a question arose in the hearts of the many heroines with Diary Copies: what exactly was the essence of four dimensions?

Living in a third-dimensional universe, they could understand the three coordinate axes of length, width, height—x, y, and z—that Qin Moyu had mentioned.

But what would that additional, unknown coordinate axis, completely perpendicular to three-dimensional space, actually look like?

As if responding to their thoughts, the Diary System quietly revealed today's diary topic...

[I nearly forgot to write today's diary topic. Let me take a look.]

[What is the fourth dimension?]

[This question... is quite profound. I can't guarantee that my answer is accurate, even though I have personally witnessed the fourth dimension.]

[Why do I say that? Because the fourth dimension I witnessed was seen by using the technological method of the "Divine Core" to ascend into a four-dimensional life form. I could only glimpse a tiny part of it, and I call this dimension the Dark Plane Dimension.]

[If the vast and boundless four-dimensional universe were compared to a gigantic iceberg, then the Dark Plane would only be the tiny tip exposed above the water.]

[People see the iceberg's majestic grandeur, yet they do not know that beneath the water lies its largest, coldest, and darkest main body!]

[The vast Dark Plane may appear boundless, but before the true four-dimensional universe, it is merely the shallowest corner, not even one hundred-millionth of the fourth dimension's full expanse!]

[As for the fourth dimension, it has been defined as the dimension of "time." From the perspective of physics, it consists of four coordinate systems: x, y, z, and the time axis.]

[This is only an abstract understanding, a popular definition suited to the cognition of the three-dimensional universe. It is far from sufficient to explain the true entirety of the four-dimensional universe.]

[Ordinary people who have lived in the three-dimensional universe for a long time have had their vision and cognition locked in place by three-dimensional physical concepts. They simply cannot directly imagine or describe the true concept of this fourth coordinate axis...]

[Unable to glimpse the truth of the high-dimensional universe, they can only rely on the external characteristics of the four-dimensional world and broadly label it "time" as an abstract explanation.]

[To be honest, I can understand this abstract definition. After all, I personally experienced dimensional ascension and glimpsed the true scenery of a corner of the four-dimensional universe.]

[Under the gaze of four-dimensional beings, all the rules of the three-dimensional world would completely collapse.]

[Any entity with a trajectory of movement would no longer be a fleeting image, but would possess temporal afterimages derived from and attached to that entity.]

[The colors of these temporal afterimages would be slightly dim, like an elderly person pacing about, endlessly repeating their past, present, and future trajectories of action.]

[In simple terms, the eyes of four-dimensional beings are innately capable of observing timelines. With one glance, they overlook the past, see directly into the present, and foresee the future!]

[This is why top-tier god-level civilizations named the fourth dimension "time."]

[And because of this, dimensional suppression can truly be called unsolvable.]

[Setting aside whether four-dimensional beings can directly alter timelines, a three-dimensional life form that is young one second may have its time arbitrarily altered the next, reduced to a lifeless old age...]

[The most intuitive difference is this: in the vision of four-dimensional beings, every action of a three-dimensional being—past, present, and future—is a traceable trajectory.]

[The desperate resistance of three-dimensional beings is no different from the futile struggle of puppets on strings in their eyes. The ending has already been decided from the very beginning.]