The Last Sentinel

In the center of the square, a holographic high-definition camera was intently watching Ye Feng.

The crimson halo in Ye Feng's eyes gradually faded, and his voice was calm and magnetic, "I'm very happy to share the analysis process of the inverse formula with everyone. I won't hold back; I will show everyone the solution ideas and process of the inverse formula, and I hope everyone can learn it."

"Before we begin solving the problem, I'd like to mention an experiment: the black box will interference slit light transmission experiment."

"This experiment is highly controversial, and I believe that all of you elite humans here have heard of it!"

"The black box experiment is highly controversial, but it proves one point: that there is subjective influence. The unseen particles will be deviated according to our subjective will, and this variable is the missing one of pi. It is a standard four-dimensional mathematical problem, and to solve it, we must use the framework of four-dimensional mathematics."

"The architectural concepts of four-dimensional and three-dimensional are not significantly different."

"To put it bluntly, solving a three-dimensional problem is a one-on-one duel; if you're strong enough, you can defeat your opponent."

"The solution to the four-dimensional problem is a group fight, which means that you are only one person, while there are two opponents: one is a problem that you face head-on, and the other is an invisible particle that is sabotaging you in the dark."

"The simplest way to solve this problem is to avoid one-on-one fights and instead gang up on him."

"The wildest problems require the most unrestrained problem-solving approaches; therefore, in the name of mathematics, I challenge you to a duel!"

The moment Ye Feng finished speaking, the tip of his right index finger suddenly emitted a bright light. The instant his finger touched the ground, the mathematical symbols Ye Feng had drawn on the ground burst into flames. Each mathematical symbol burned with golden flames—trigonometric functions, multidimensional functions, plasma formulas, the three laws of universal gravitation… formulas, equations, and data burned rapidly, transforming into the most dazzling golden starlight, soaring into the sky!

At this moment, everyone was horrified and speechless.

Kuafu muttered, "Damn it, what, what is this?"

The Queen Mother of the West's beautiful eyes shone brightly as she exclaimed in astonishment, "Externalizing mental power! Powerful mental power! Mental power is the most powerful force in the human body, capable of converting physical strength into mental power. His mental power is simply heaven-defying! Even within the Containment Foundation, there are very few ability users who can match his level of mental power!"

A true expert's skill is immediately apparent.

Just as Ye Feng's mathematical formulas and equations all burned and turned into golden icons floating in the air, the Human Alliance Forum on the screen fell silent.

"Incredibly powerful mental strength! Even within the Foundation, very few can reach this level!"

"A genius, an absolute genius! With that kind of mental strength, he could easily become a captain in the Foundation!"

"Captain? Ha! He'll be a five-star team member right away, a vice-captain candidate. In less than three years, he'll be the Foundation's president! A super-powerful superhuman!"

"With such a superpower, if he used his mental energy for an attack, he could easily kill me! I completely believe this powerful person when he says he has solved the God Formula. After all, if a powerful person with a mental ability who can crush me claims to be my father, I would immediately kneel down and call him Daddy!"

"You guys are really pushing your luck! Even if he's strong, math is the ultimate test of genius. Until the very end, who knows if he's really capable!"

"Stop being stubborn upstairs. Even if he's playing a prank on everyone, what can you do about it? With his mental strength, he could easily become a big shot. Every single person here who's ever cursed him, he could send them to the Tribunal to reflect on their actions!"

"I finally understand why he's not afraid to solve problems live, and even said he'd teach everyone how to solve them. We can't even get past that mental hurdle, how are we supposed to learn from him! He's just showing off!"

Envy, jealousy, and hatred finally manifested in online forums, and the same applies to real life.

The entire square was bathed in golden light, with golden divine fire formulas, equations, and numbers slowly igniting.

Ye Feng said, "Since it's a group fight, we need to invite a strong person who has fought against the God Formula! First up: Zu Chongzhi!"

As soon as he finished speaking, Ye Feng clenched his fist. On his right hand, golden spiritual power gathered, impacted, burned, and released. Golden flames gathered and spun at the top. Golden mathematical equations and formulas continuously condensed and converged, eventually transforming into a golden gate to heaven.

The golden door to mathematics slowly opened, and an old man dressed in ancient Eastern clothing stepped out. He stood beside Ye Feng, seemingly summoned by Ye Feng, with his hands behind his back, becoming Ye Feng's support.

"How can we approximate the nearest values ​​of the origin using a polynomial function at a given point and obtain the corresponding interval? Come forth, Newton!"

The golden door to mathematics opened, and Newton stepped out, his golden royal robes gleaming, standing gentlemanly behind Ye Feng.

"Newton selected a large number of nodes and calculated the difference quotient between them. The Newton difference value takes the value at three discrete points, but the drawback is still obvious. Such function values ​​are not flexible, and even have a large error! But what if we use the idea of ​​limits to reduce all nodes to an infinitely close new origin? Taylor expansion is born! Come forth, Taylor!"

The golden mathematical gate opened, and a gentlemanly figure dressed in gold appeared behind Ye Feng.

"The Taylor expansion was complete in its first half, but the second half was missing. Then one afternoon, a mathematical genius proposed: what if we transformed the variable X into an imaginary number IX? By introducing the concept of an imaginary number and substituting it into the equation, we could first write the Taylor expansion of E to the power of X, then let X be the imaginary number IX, and using the real and imaginary parts to combine like terms, simplifying the process! This young man came incredibly close to the answer to the 'God's Formula'—he was none other than the mathematical god, Euler!"

The golden gates of mathematics opened completely this time, and the magnificent golden light covered the entire sky. Euler sat on the throne of mathematics and appeared behind Ye Feng!

At this moment, golden light enveloped everyone in the square, and countless people stared wide-eyed at the scene before them.

All that could be seen was Ye Feng standing in place, with four magnificent, ten-story-high golden giants standing behind him.

Zu Chongzhi, Newton, Taylor, Euler!

Ye Feng, now brimming with confidence, spoke arrogantly, "I'm going to redo the problem now. If you want to interfere, then bring it on!"

As soon as he finished speaking, Ye Feng slammed his hands together, and endless pi data surged out from his palms like a tidal wave, a frenzied sea of ​​data rolling and surging!

Just as everyone was hesitating, a strange scene unfolded.

Originally, golden mathematical light enveloped the sky above the plaza, but for some unknown reason, half of the sky above the plaza was distorted by the strange power of the rules.

The sky above the square turned half gold and half pure black!

At this moment, the light and shadow revealed the hidden variable particles, and everyone saw the dark hand!

On the People's Alliance forum, countless screams and angry shouts erupted.

"It's the dark, wandering variable particle, the ultimate culprit that locks down mathematics!"

"It finally appeared, forced out by this young man!"

"Now that it has appeared, what follows will be a decisive battle against the most dangerous ferocity!"

"Fight it to the death! Even wandering particles are heretics and must be contained!"

Above the plaza, Ye Feng crossed his hands, and the sea of ​​data surged and rose, with data pillars appearing and intertwining. The entire plaza transformed into a giant God's chessboard. On both sides of the chessboard, shadowy variable particles manifested as pillars of black light, constantly laying down barriers to hinder Ye Feng's data flow. Meanwhile, Ye Feng launched new attacks, and the offensive and defensive battle between the two sides became increasingly fierce.

Just then, Ye Feng shouted, "Where are the Ancestors of the Several Paths? Lend me a hand!"

Ye Feng took the lead, followed closely by the four mathematical gods Euler, Newton, Zu Chongzhi, and Taylor, who entered the battlefield amidst a fierce sea of ​​golden data that transformed into flames.

Ye Feng charged ahead, using his body as a chess piece, smashing into the opponent's black chessboard territory. The four mathematical geniuses followed closely behind, rushing into the black chessboard territory. At this moment, countless mathematical symbols transformed into stars, shining brightly and dazzlingly, for the final blow!

"Did we win?"

"Are we going to win?"

"Has π been calculated to its full extent? Does the inverse formula hold true?"

In the instant the golden light vanished, all four mathematical gods collapsed. Their corpses coalesced into a burning staircase. Ye Feng walked forward step by step, and then he saw a figure from behind, a weathered figure, aged yet resilient.

Ye Feng was practically burning his golden core, his entire body ablaze with spiritual energy, staring at the old man and saying, "Are you going to block my way? The variable is right in front of me. If I kill it, I can obtain the God's Formula and completely reverse time!"

The old man, with his back to Ye Feng, muttered, "So, what happens after defeating the God Formula?"

Ye Feng said, "And then? The next step, of course, is to open up the vertical dimension, unleash the light-speed curse, and begin a new journey for humanity!"

The old man continued, "If opening a dimension leads to a new space, a new and larger cosmic prison, what will you do? Will you continue to unlock new keys to that prison?"

Ye Feng said, "Otherwise what?"

The old man said, "The cage is open, but it is still a cage. Outside the cage is an even bigger cage. The significance of God's formula is not in opening it, but in finding the coordinates of the stars outside the cage. Only in this way can we get rid of the cage. I will keep the variable particles for you. This final battle will end in a draw."

As he finished speaking, the old man took a step and was about to disappear into the darkness.

Ye Feng looked at the old man, his voice surprisingly calm, "Are you the Guide? The only contact person for the Sentinels on the home planet! The undying beacon that hopes for the return of countless wanderers!"

The old man trembled violently. With his back to Ye Feng, he remained silent for a long while before slowly asking, "Who are you?"

Ye Feng said, "I am a failed time traveler, and also the last [Sentinel]."

The old man did some calculations with his fingers, then laughed heartily, "How interesting! There are actually cases of failed time travel!"

Ye Feng said, "There's nothing I can do, I'm just that unlucky guy who failed to time travel."

The old man then added, "Unfortunately, the [Sentinel] is dead, and the progress of returning home is permanently locked at 99.99%!"

Ye Feng said, "Yes, the [Sentinel] is dead! But Leader, I have something to say!"

The old man said, "Speak!"

Ye Feng clenched his fists. "It's not the children's fault that they can't find their way home; it's because there are bad people on the road. Since the children can't go home right now, let's let home go find the children! It's just an ancestral star, isn't it? It's just a solar system, isn't it? From the perspective of all the heavens, this ancestral star and solar system are just a very small unit. We can use our home as a vessel, break through the fourth wall, go to other worlds and dimensions, and bring the children home!"

Upon hearing this, the old man fell silent.

In the chat group, countless big shots shed tears.

HarmonyOS's most heartfelt sentiment: Is my mom coming to pick me up? Ye Feng, a true man!

Fifteenth-level martial artist: If my father comes to pick me up, I'll burn the entire universe down without hesitation!

Immortal Mage: Ye Feng really wants to take us home, there's absolutely no faking it.

……

Finally, with a long sigh from the old man, "Until we meet again, failed time traveler."

boom--

The heavens and earth darkened, and all spiritual power and Dharma forms vanished completely!

The four great mathematical gods—the variable particle, the God formula—have all vanished.

In the dark center of the square, Ye Feng knelt down on the ground with a thud, looking up at the sky, neither sad nor happy.

Everyone was at a loss.

"Is this a failure or a success?"

"The inversion equation did not appear; it failed."

"Even such a prodigy has failed! This is just too infuriating!"

"Undeniably, this young man's mathematical talent has surpassed that of the god of mathematics, reaching a level where he can force the variable particle to reveal itself and fight him. If he retains his original intention in this battle, he will definitely have another chance to kill the variable particle and break through the fourth wall in the future!"

"What a pity, just a hair's breadth away from breaking through the fourth wall!"