The aftereffect of milk is quite strong.

The aftereffects of that bottle of imported milk were unexpectedly strong.

Perhaps it was the retaliatory relaxation of a body experiencing extreme fatigue after intense military training, coupled with a high sugar intake. The moment the preparatory bell for the first period rang, Chen Zhi's eyelids began to droop.

Chen Zhi spread his books across the desk, building a makeshift defensive line, buried his head in the crook of his arm, and his breathing instantly became long and even.

On the podium, Zhang Guoping, the math teacher for Grade 7, Class 3, was organizing his lesson plans with a gloomy expression.

Zhang Guoping was a ruthless character. In his forties, the top of his head had long since "supported the frontiers"—commonly known as a "Mediterranean" bald spot.

The classroom was dead silent. Most of the students sat upright, not even daring to breathe too loudly. After all, the semester had just started, and no one wanted to cross this King of Hell.

Except for Chen Zhi.

Sitting in the front row, Li Jiahao, however, was full of energy.

His current mental state was quite twisted. That bottle of imported milk Chen Zhi had drunk made him harbor deep resentment. He glanced back and saw that Chen Zhi was already asleep, his shoulders even rising and falling slightly with his breaths.

God is helping me.

A sinister smile crept up the corners of Li Jiahao's mouth.

Drank my milk and enjoyed it, huh? And you still acted like nothing happened in front of my goddess?

Now I'll make you spit out everything you drank.

Zhang Guoping had just turned around to write the words "Introduction to Middle School Geometry" on the blackboard and was about to start his lecture.

"Report, teacher!"

An abrupt and loud shout shattered the silence of the classroom.

The chalk in Zhang Guoping's hand paused. His brows instantly furrowed into a deep scowl. He turned around, his gaze piercing: "What is it?"

Li Jiahao sprang to his feet, a look of righteous indignation on his face, and pointed a straight finger at the back corner: "Teacher, Chen Zhi is sleeping in class! And he's snoring, which is seriously affecting my ability to listen to the lecture!"

The heads of the entire class swiveled around in unison.

There was no snoring at all.

Chen Zhi was just sleeping rather deeply, and his breathing was slightly heavy. But in a classroom so quiet you could hear a pin drop, being exaggerated like this by Li Jiahao completely changed the nature of the situation.

What Zhang Guoping hated the most was students sleeping in his class. It was a blatant disregard for his teaching authority.

"Chen Zhi!"

Zhang Guoping roared, slamming his set square heavily onto the podium with a loud smack, sending chalk dust flying.

In the back corner, the slumped figure stirred.

Chen Zhi groggily lifted his head, his face still bearing the red crease marks from his sleeve. He rubbed his sleepy eyes, looking around in bewilderment.

Who am I? Where am I? Why are so many people looking at me?

"Stand up!" Zhang Guoping pointed at him, spit flying. "Sleeping during the very first proper class of the semester? Do you think this is a hotel?"

Chen Zhi slowly stood up, his brain still a bit fuzzy.

Beside him, Pei Ningxue remained sitting bolt upright, staring straight ahead as if everything happening around her had nothing to do with her. Only her hand, hidden under the desk, gently shifted her textbook a bit to the side, as if afraid of being caught in the crossfire.

"Teacher, I have a bit of low blood sugar." Chen Zhi casually made up an excuse and yawned.

"Low blood sugar?" Li Jiahao sneered from the front, chiming in sarcastically. "You just drank a huge bottle of milk, and you still have low blood sugar? I think you're just full and lazy."

A few suppressed chuckles echoed in the classroom.

Zhang Guoping's face grew even darker. He pushed up the glasses on the bridge of his nose, which were as thick as the bottoms of beer bottles, turned around, and swiftly wrote a problem on the blackboard.

Originally, he had planned to teach basic concepts, but now that his temper had flared, he directly pulled a finale-level problem from his memory.

It was a geometry proof problem with a complex figure and hidden auxiliary lines. It clearly exceeded the knowledge scope of seventh graders; even eighth graders would take a detour if they saw it.

"Since you have so much energy, you shouldn't have a problem with this question, right?" Zhang Guoping tossed the chalk onto the podium and pointed at the blackboard. "Come up and solve it. If you can't, take your book and stand in the hallway for the rest of the period!"

Li Jiahao almost laughed out loud.

Just looking at that problem was enough to make one's scalp tingle. Various triangles were nested together, and it required proving line segment ratios. At a glance, it was obvious this wasn't something meant to be learned at this stage.

Chen Zhi was dead meat this time.

Making a fool of himself in public and getting kicked out of the classroom—this is the consequence of offending me, Li Jiahao!

The entire class looked at Chen Zhi with sympathetic eyes. Lin Wanwan was so anxious that her little face turned pale. She wanted to raise her hand to plead for Chen Zhi, but was glared back down by Zhang Guoping's stern look.

Chen Zhi sighed.

He really didn't want to move.

Having just woken up, his brain was still mush, and his legs felt weak. But looking at the situation, he had no choice but to do it.

He slowly left his seat. As he passed by Li Jiahao, he clearly felt the other party's gloating gaze.

Chen Zhi walked up to the podium and picked up a piece of chalk.

He looked up at the problem on the blackboard.

His eyes, which had been cloudy just a moment ago, instantly became clear the moment they touched those lines and letters.

Even though he didn't do so well in his past life, he was still a science major after all. Doing a middle school math problem was a piece of cake.

He didn't even need to think.

Three solutions instantly popped into his mind.

Chen Zhi weighed the chalk in his hand, turned his head to glance at Li Jiahao, who was still waiting to watch a joke, and the corners of his mouth curled up slightly.

Since you want to play, I'll play a big game with you.

"Tap."

The chalk touched the blackboard, making a crisp sound.

Immediately following was a dense string of rapid tapping sounds.

Chen Zhi's hand speed was incredibly fast. The chalk danced across the blackboard, leaving behind neat and elegant white handwriting.

Solution One: Conventional Auxiliary Line Method.

Draw a parallel line through point D intersecting at point E...

Because triangle ABC is similar to triangle ADE...

Therefore...

In less than a minute, the first solution was completed.

Zhang Guoping had originally been standing to the side with his arms crossed, ready to start scolding the moment Chen Zhi failed to produce anything meaningful. But when he saw that auxiliary line, the look in his eyes changed.

This kid actually knows what he's doing?

However, Chen Zhi did not stop writing.

Beside the first solution, he drew a dividing line and immediately wrote down "Solution Two."

The entire class was stunned.

There's a second solution?

This time, Chen Zhi used the area method. Without the need for complex auxiliary lines, he directly used the triangle area formula to derive the answer. The process was much more concise than the first one, and the logic was even more rigorous.

The classroom was terrifyingly quiet; only the sound of the chalk tapping against the blackboard echoed.

Those students who were originally ready to watch a good show now had their mouths hanging wide open. Although they couldn't understand it, they were deeply shocked.

Is this really the same Chen Zhi who was just sleeping?

The smile on Li Jiahao's face froze, as if someone had pressed the pause button on him. He stared fixedly at the blackboard, trying to find a mistake in Chen Zhi's work, but he realized he couldn't even understand the very first step.

"Tap, tap, tap..."

The sound continued.

Chen Zhi's wrist flicked nimbly as he wrote down "Solution Three."

This time, he directly constructed a Cartesian coordinate system.

Let the coordinates of point A be (0,a), and point B be (b,0)...

Using the knowledge of analytic geometry, he transformed a complex geometric proof into simple algebraic operations. This was a concept only covered in the first year of high school, but under Chen Zhi's pen, it flowed smoothly—a complete dimensional crush.

Zhang Guoping's glasses slowly slipped down to the tip of his nose, but he forgot to push them back up.

He stared in disbelief at the three completely different problem-solving methods on the blackboard. The last one, in particular, was absolutely not something an ordinary seventh-grader could master.

Tap.

As the final stroke fell, the piece of chalk was completely used up.

Chen Zhi casually dusted the remaining chalk off his hands, turned around, and accurately tossed the tiny chalk stub back into the chalk box. This series of movements was unbelievably cool.

He didn't look at the dumbfounded Zhang Guoping. Instead, he turned his gaze to Li Jiahao, who was sitting in the fourth row with a deathly pale face.

"Teacher," Chen Zhi's voice was lazy and careless. "This problem is actually quite simple, just an introductory level. But seeing Li Jiahao's rich expressions earlier, it seems he has a major problem with me."

He paused and pointed to the third solution on the blackboard. "Especially this third one, which uses high school analytic geometry. I'm afraid Li Jiahao might not understand it. Do you need me to tutor him privately? After all, classmates should help each other out."

Boom—

This sentence was like a resounding slap, viciously striking Li Jiahao across the face.

Absolute psychological destruction!

The eyes of the entire class focused on Li Jiahao once again. Only this time, there was no agreement, only banter and mockery.

You were jumping around so happily just now, and now you're dumbfounded, aren't you?

Not only did he solve it, but he also used three methods! He was even worried you wouldn't understand!

Li Jiahao's face instantly flushed the color of pig liver, mortified to the point of wanting to die. He opened his mouth to retort, only to find he had absolutely nothing to say. In the face of absolute power, any words seemed pale and powerless.

Zhang Guoping finally snapped back to reality.

The way he looked at Chen Zhi had completely changed, shifting from his previous disgust to the wild joy of discovering a hidden treasure.

"Ahem." Zhang Guoping cleared his throat, trying hard to maintain his authority as a teacher. "Well... nicely solved. The logic is very clear. It seems Chen Zhi put in a lot of hard work over the summer vacation."

He glared at Li Jiahao. "Some students shouldn't blindly join the jeering when they don't understand things themselves! Pay attention to the class!"

Li Jiahao buried his head into his chest, wishing he could find a hole to crawl into.

"Alright, go back to your seat. Pay more attention in class from now on, don't sleep so deeply." Zhang Guoping's tone had noticeably softened.

Chen Zhi nodded and strutted back to his seat with an arrogant swagger.

As he passed by Lin Wanwan, the little girl gave him a thumbs-up.

Chen Zhi sat down in his seat and let out a long sigh of relief.

He had finally bluffed his way through.

Just as he was about to lie back down and catch up on his sleep, a neatly folded piece of scratch paper was quietly pushed over from his side.

Chen Zhi paused and turned his head.

Pei Ningxue maintained her aloof posture, taking notes without even sparing him a sideways glance.

Curious, Chen Zhi unfolded the paper.

There was only one word on it, written in elegant yet strong handwriting that revealed a hint of pride:

Impressive.

Chen Zhi raised an eyebrow.

This was an evaluation from Pei Ningxue, the renowned Ice Princess.

He picked up his pen, drew a simple smiley face next to "Impressive," and pushed the paper back.

Seeing the returned note, Pei Ningxue's movements paused slightly. She didn't look at the smiley face, but quickly slipped the note into her book. That extremely faint curve at the corner of her mouth flashed by once again.

The bell rang.

The moment Zhang Guoping stepped out of the classroom, the room erupted into chaos.

"Holy crap! Class Rep, you've been hiding your true strength!"

"Since when did you teach yourself high school math!"

Several boys gathered around, worshipping Chen Zhi.

Chen Zhi waved his hand, looking modest. "Keep a low profile, keep a low profile. It's mainly because that question was too easy. Anyone with hands could do it."

Not far away, Li Jiahao almost spat out a mouthful of blood upon hearing this.

Anyone with hands could do it?

Are you calling me handless, or brainless?

"Chen Zhi."

A cold, clear voice sounded by his ear.

The boys surrounding him instantly quieted down and consciously made way.

Pei Ningxue had packed her schoolbag. She stood up, looking down at Chen Zhi. With her back to the light and a few strands of hair falling by her ear, she was breathtakingly beautiful.

"What's up, desk-mate? Won over by my talent?" Chen Zhi asked with a grin.

Pei Ningxue ignored his glib tongue and instead pointed to the third solution on the blackboard, which had not yet been erased.

"For setting the coordinates, wouldn't it have been simpler if you set the origin at point D?"

Chen Zhi froze for a moment, a flash of surprise crossing his eyes.

This girl not only understood it, but had she really self-studied up to high school level too?

"True." Chen Zhi dropped his joking demeanor and nodded. "Setting it at point D saves calculating two equations, but I deliberately chose a more complex-looking one just to show off."

Pei Ningxue looked at him openly admitting to showing off, a barely noticeable hint of amusement flashing in her eyes.

"Boring."

She dropped the word, slung her schoolbag over her shoulder, and turned to leave.