Marrying My Bestie's Ferocious Brother - He Calls Me His Baby!-Chapter 199 - 198: This Slap Landed on the Professor’s Formula!
The crisp sound of "crack" still echoed in everyone’s ears.
The chalk in Professor Qian’s hand snapped with a "crack" as he squeezed it.
He slowly turned around.
His wrinkled face looked like a stone frozen for a thousand years.
Hundreds of eyes converged at the back of the classroom.
Sympathy.
Schadenfreude.
Observing the spectacle.
Professor Qian’s finger rose.
Across dozens of meters, it pointed precisely at Lin Wan Yi.
"Get out!"
Two words, devoid of any warmth.
"Immediately!"
Another two words, carrying an undeniable command.
The hearts of the entire class were in their throats.
No one ever dared to mess around in Mr. Qian’s class.
Now it was all over.
This impossibly beautiful woman was about to be thrown out in front of the whole school.
Lin Wan Yi stood up.
She prepared to push the stroller.
But at that moment, her movement halted.
Inside the stroller.
Gu An did not cry.
His face, a miniature version of Gu Yanshen, was tightly drawn.
Two almost invisible eyebrows were knitted into a knot.
His little mouth was producing a rapid "puh puh" sound.
He wasn’t about to cry.
He was angry.
His chubby little hand was stubbornly raised, one finger pointing straight at the podium.
Pointing to the bottom right corner of the blackboard, where dense notes were written.
Lin Wan Yi followed her son’s finger with her eyes.
It was a solution that Professor Qian had just derived for a nonlinear partial differential equation.
Lin Wan Yi was momentarily stunned.
Then an expression of profound meaning appeared on her face.
She did not go to the stroller.
She sat back down.
Professor Qian’s expression grew uglier.
"Didn’t you hear?"
"I said for you to get out!"
Lin Wan Yi raised her head, meeting those sharp eyes.
Her voice was very calm, yet it reached every corner of the classroom.
"Professor."
"My child is not causing trouble."
Boom!
This single sentence made the entire classroom explode.
"What? Not causing trouble?"
"What’s she talking about?"
"Could it be that the kid did it on purpose?"
Lin Wan Yi ignored the discussions around her.
She looked at the trembling with anger Professor Qian on the podium and continued to speak word by word.
"He is saying..."
"You calculated it wrong."
...
Dead silence.
Ten seconds of dead silence.
Then.
"Hahahahaha!"
Someone, unknown who, started laughing, and then suppressed laughter spread like a virus throughout the entire classroom.
"Are you crazy? A baby still nursing said Professor Qian calculated wrong?"
"Professor Qian is the national authority on probability theory!"
"This woman is shameless to avoid being kicked out!"
"What a ridiculous thing!"
On the podium.
Professor Qian was so enraged that he chuckled.
"Good."
He slapped the half piece of chalk on the desk with a "crack".
"Very good!"
He pointed to the board full of formulas, face filled with cold mockery.
"I won’t erase it today!"
"You, come up!"
He pointed again at Lin Wan Yi.
"Come up and point out the mistake your son mentioned!"
"If you do, I, Qian Xuezhang, will apologize to you in front of the entire school!"
His tone suddenly sharpened.
"If you can’t point it out or talk nonsense!"
"You are maliciously disrupting class order, corrupting academic integrity!"
"Not only will I give you a severe punishment, but I will also report it to the school council and issue a public reprimand throughout the school!"
This was already the most serious punishment.
Everyone looked at Lin Wan Yi, waiting for her to back down, to apologize.
But Lin Wan Yi smiled.
She bent down, picked up Gu An from the stroller.
Holding her son, she walked step by step down the stairs.
Passing through eyes filled with either mockery or sympathy.
She walked onto that sacred and inviolable podium that belonged to Professor Qian.
The room fell instantly silent.
Everyone held their breath.
"Chalk."
Lin Wan Yi extended her hand towards Professor Qian.
Professor Qian snorted coldly, pushed the chalk box over.
Lin Wan Yi didn’t take it.
She only picked up a small piece of broken chalk that had snapped off in Professor Qian’s hand.
Then, she placed that piece of chalk into Gu An’s chubby little hand.
She took her son’s wrist, holding him up to the blackboard.
"An An."
"Show grandpa what’s wrong?"
Gu An’s eyes focused intently on that line of formula.
The chalk in his hand remained steady.
His little arm lifted.
Amid a mass of numbers and symbols, it was as if he had zeroed in on a precise location.
Then.
He exerted his entire strength.
He drew a crooked, but unmistakably clear cross.
"X".
The cross landed on the last line of the formula derivation.
Next to a constant term "C".
Professor Qian’s lips still held a mocking smile.
He glanced down.
Only once.
The smile on his face froze.
That position...
That constant term overlooked by everyone...
During the previous variable integration process, because the Jacobian determinant was introduced, the nature of that constant term should have changed.
It shouldn’t be an independent constant!
It should...
Professor Qian’s mind buzzed.
Like being struck by lightning, he quickly grabbed a new piece of chalk nearby.
He didn’t look at Lin Wan Yi or the child.
He began calculating rapidly in the blank space beside. 𝐟𝚛𝕖𝚎𝕨𝗲𝐛𝚗𝐨𝐯𝐞𝕝.𝐜𝗼𝗺
"Scratch, scratch, scratch"
The classroom was filled only with the sound of chalk marking the blackboard.
Faster and faster!
More and more urgent!
The students below couldn’t understand.
"What’s the professor doing?"
"Seems like he’s re-calculating?"
"Couldn’t be... is it really wrong?"
Sweat started to bead on Professor Qian’s forehead.
His hand started to tremble.
He checked three times.
Each result hit his heart like a heavy hammer.
It was wrong.
It really was wrong.
A classic model derivation he had researched for half his life and lectured innumerable times.
A formula he was proud of, which had never been mistaken.
Today.
Right here.
It was found to have a fatal flaw by a six-month-old baby.
"Plop."
The chalk he held dropped to the ground, breaking into several pieces.
The whole classroom was silent enough to hear a pin drop.
Professor Qian stood frozen in place.
Slowly, slowly, he turned around.
He did not look at the hundreds of shocked students below the stage.
His gaze landed straight on Lin Wan Yi’s arms, on that innocent-faced baby.
Then.
Under the watchful and incredulous eyes of everyone.
This grey-haired, highly respected old authority in the field of mathematics.
Bowed deeply, ninety degrees, to Gu An.
His voice carried an uncontrollable tremble and reverence.
"The accomplished one..."
"Is the teacher..."
The entire scene was petrified.
Lin Wan Yi’s expression did not change at all.
She just calmly held her son, turned and walked off the podium.
Placed him gently back into the stroller, tucking the small blanket over him.
Meritorious deeds were hidden.
Just at this moment.
