The night before the college entrance exam results were released, I redeemed my Peking University ad

Director Huang stood at the front of the Highly Knowledgeable Alliance team, his hands behind his back. He glanced intently at the questions on the blackboard, then turned his head to look behind him.

A man in his thirties stepped out of the line.

He was wearing a light blue Oxford shirt and frameless glasses. He was slender and walked with his shoulders slightly forward, clearly someone who spent most of his time in the laboratory.

He walked to the front of the stage, adjusted his glasses, and looked at Ji Bai with an expression that was not arrogant.

"Hello Ji Bai, I am a PhD student in the Department of Chemistry at Zhejiang University. Could you please share your problem-solving approach for this challenging organic synthesis problem?"

Without any unnecessary pleasantries, they went straight to asking questions.

The last big question in chemistry.

Ji Bai glanced at the question, shrugged, and casually picked up the chalk: "This question is pretty easy."

"First, let's look at the starting material. It's an aromatic compound containing electron-withdrawing substituents. The nitro group is in the meta position, which determines the directing effect of subsequent electrophilic substitution..."

Having mastered high school chemistry, these college entrance exam questions are nothing to worry about.

As Ji Bai spoke, he quickly wrote the reaction equations on the blackboard with chalk, clearly outlining the reagents, conditions, and intermediate structures for each step.

"The last step is simple: intramolecular Friedel-Crafts alkylation to form a ring, potassium carbonate to remove hydrogen, and you're done."

"The core idea of ​​this question is to first expand the framework and then close the loop. The organic deduction in the college entrance examination chemistry is always the same. The question setter just puts a few classic reactions together and asks you to guess the order. If you guess the order, you get the points."

Ji Bai threw the chalk into the blackboard tray and patted the chalk dust off his hands.

"This question isn't difficult!"

Not difficult?

He said it wasn't difficult?

This is the final, most challenging question; fewer than 100 people in the entire province have answered it correctly. Is it not difficult?

The auditorium was silent for a full two seconds.

The teachers at No. 99 Middle School were the first to breathe a sigh of relief, with the chemistry teacher leading the applause.

The standard problem-solving approach hits the mark at every step, leaving no room for ambiguity or vagueness.

This isn't something you can guess; it's genuinely possible.

The chat room erupted instantly.

"Holy crap, I don't understand what you're saying, but it sounds amazing!!!"

"I am a chemistry teacher at the Provincial Experimental High School. I can say with certainty that Ji Bai's answer was very accurate. He explained the reaction mechanism of each step very thoroughly, even more clearly than the standard answer."

"This kind of rhetoric isn't something someone who just guesses on multiple-choice questions could come up with!"

"The way he twirls the chalk while explaining is so cool! He's got that genius vibe!"

"I only scored 38 points in chemistry on my college entrance exam, but I actually understood it! What kind of teaching talent is that!"

"Brilliant! Absolutely brilliant! This idea is ingenious!"

"He's not taking the test; he's analyzing the logic behind the questions! That's a dimensional reduction attack! A higher dimension defeating a lower one!"

"Damn, I'm fired up!!! Ji Baichong!!!"

……

On stage, the chemistry PhD looked rather unwell.

He pushed up his glasses and his lips moved as if he wanted to find fault with something.

But in the end, he only searched through Ji Bai's answer twice. Every step was correct, every term was used accurately, and it even showed a deeper understanding of the reaction mechanism than the standard answer he expected.

"Great! I'm all set!"

He forced himself to clap twice, then stepped back after saying his piece.

The live chat instantly erupted into a sea of ​​cheers.

"Yay!!! We won a game!!! We've taken the first one!!!"

"As expected of the sect's holy son!"

"The first wave of heavenly tribulation was easily overcome!"

"Don't get too excited yet, there's still physics and math! Those two are even harder!"

……

The atmosphere at the Kochi Alliance was noticeably more somber than before.

The layman looks at the excitement and the insider looks at the doorway.

Although Ji Bai only answered one question, his explanation was logically rigorous and well-organized from beginning to end. He even drew a few resonance structures when talking about the electronic effects of intermediates. This level of proficiency is not something that someone who just memorizes answers can fake.

Ji Bai is really good at this!

A fine layer of sweat had already appeared on Director Huang's forehead.

He took a handkerchief out of his pocket, touched his forehead twice discreetly, and then looked at the other person behind him.

"Hello Ji Bai, I am an associate professor in the Department of Physics at National Chiao Tung University."

He walked to the blackboard with physics problems and pointed to the comprehensive problem on it about electromagnetic induction.

"I would like you to explain the third part of this comprehensive problem on electromagnetic induction, which is the part that involves the relationship between the trajectory of a conductor rod and energy conversion under the action of a variable force."

Ji Bai went to the blackboard, didn't even pick up the chalk, and directly pointed to the diagram in the question and began to speak.

"The core of this question is not electromagnetic induction, but the mechanical analysis under the action of variable forces."

"Many people, when they see electromagnetic induction, only think of using Faraday's law to calculate the induced electromotive force, then directly use Ohm's law for a closed circuit to find the current, and then apply the Ampere force formula. If you calculate it this way, you can't handle the variable force condition in the third question at all."

"Because the speed of the conductor rod changes, the induced electromotive force changes, and the Ampere force also changes. This is a typical variable acceleration motion."

"I have two solutions. The conventional solution is the momentum theorem, where the impulse of the Ampere force on the system cancels out, and momentum is conserved. If you find that too complicated, you can use the infinitesimal method of integration. However, for the college entrance exam, momentum is enough; it's an easy question."

Easy question?

The associate professor in the physics department was completely dumbfounded.

He originally thought that Ji Bai would only know one conventional solution at most, but he didn't expect him to give two solutions directly, and even said that this was a free point question!

This level is better than many freshmen!

Professor Sun was silent for a moment, then nodded, his tone becoming much more sincere: "Your thinking is very clear. I have no further questions."

The live stream chat went completely crazy:

"Holy crap! There are two more solutions!"

"This question had a success rate of less than 5% across the province that year! He said it was an easy question?!"

"We won again! A complete stomp!"

"A 300-point score on a mock exam? You're kidding! That's a genius pretending to be a slacker!"

……

There was a deathly silence on the Kochi Alliance side.

The chemistry PhD and the physics professor had already retreated back into the line, and their expressions were not good.

The others looked at each other, no one spoke, but the certainty and confidence in their eyes began to waver, replaced by a hidden unease they dared not voice.

There's only one subject left: math.

Director Huang took a deep breath and slowly scanned everyone behind him, finally landing on a young man wearing silver-rimmed glasses.

This is Director Huang's most outstanding student, the youngest lecturer in the Department of Mathematics at Aurora University, a graduate of the Pure Mathematical Olympiad, and his doctoral dissertation focused on partial differential equations.

"I'll go."

He walked to the blackboard with the math problem, turned around, looked at Ji Bai, and spoke.

"Hello Ji Bai, I am a lecturer in the Department of Mathematics at Aurora University. Could you explain your solution to this derivative problem?"

Ji Bai looked at the question and smiled.

He picked up the chalk and wrote as he spoke: "The first question is very simple. Find the derivative f'(x) = -lnx, so (0,1) is monotonically increasing and (1,+∞) is monotonically decreasing. There's not much to say."

"For the second question, the conventional solution is to construct a function, let g(x) = xlnx + (tx)ln(tx), find the minimum value by taking the derivative, and prove that the minimum value ≥ t ln(t/2)."

"The third question is even simpler, using Chinsen's inequality: Since f(x) = xlnx is a convex function, according to Chinsen's inequality, [f(a) + f(b)]/2 ≥ f[(a + b)/2], which leads directly to the conclusion in one step."

The chalk fell, and the entire auditorium fell into a deathly silence.

Qin Sheng's Inequality!

This is material from advanced mathematics at the university level!

A high school student actually used a university-level theorem to solve the most difficult and challenging question on the college entrance exam in one fell swoop!

The live stream room has completely exploded!

"Holy crap! The Chinson-Schwarz inequality! This is university-level material!"

"A one-step kill! A direct, overwhelming attack!"

"All three questions were answered correctly! Without a single flaw!"

"Complete crushing! Utterly crushing!"

"Slap in the face! His face is swollen from the slap!"

"Director Huang: Who am I? Where am I? Why am I here?"

"I declare Ji Bai to be the pride of our time. Who agrees? Who disagrees?"

"The holy son of a fallen sect single-handedly fought against seventeen immortals from the upper realm and survived all three heavenly tribulations! What kind of cultivation drama is this?!"

……