This Isn't the Math Problem I Remember [Infinite]

[The story is complete. I may revise it from time to time. Please support the author by buying it officially!]

[The Little Math Genius's Fun Math Class is now in session!]

For everyone's safety, please follow these rules carefully:

Rule 1: Do not whisper or pass notes during class. Pay attention to the lesson.

Rule 2: Respect your teacher and be kind to your classmates. Raise your hand when you have a question, and stand when answering.

Rule 3: Finish your homework on time, and don't make the teacher angry. The teacher doesn't like stupid students, so study hard.

A math class that appears without warning sends Tian Nanzhi on a learning journey where life and death are uncertain.

[Simple addition and subtraction: Lele has A apples, and Beibei has B pears. Find A = ?, B = ?, and A + B = ?]

[Chickens and rabbits in a cage: The number of heads in the dormitory building you're currently in is A, and the number of legs is B. Find A = ? and B = ? at midnight.]

[Geometry problem: Building A is a meters tall, with a base b meters long and c meters wide. Find a = ?, b = ?, c = ?, and its volume V = ?]

[The concept of time: You had a fight with your best friend Xiaomei. To apologize, you must buy a gift and get to her before midnight to say you're sorry.]

Tian Nanzhi: The difficulty's fine. Just ordinary elementary school problems.

Her roommates: Ord...inary?

Does she mean...

Picking apples while possessing a dead body in a different dimension?

Finding the real humans among monsters disguised as people, and making sure there are more humans than monsters, or the monsters will eat them on the spot?

Fighting against established facts to ensure all eight test takers survive, or they'll be trapped in an endless cycle of death?

Taking turns answering questions amid time loops, paradoxes, distortions, and reversals, with the whole group doomed if they run out of time?

The students clutch their heads in despair: These aren't the math problems I know!

Someone once said, "When the world turns the gears, you and I are both playthings."

Tian Nanzhi smiled faintly. "Then I'll take control of the world."

Reader's Guide:

1. The members of Dorm 502 are: one powerhouse, one neat freak who obsesses over details, one bold chuuni, and one person striving to grow.

4. Mild horror and mild gore. The plot is the main focus.

5. The female lead's identity and past will be gradually revealed later.

My new novel is out! The Stand-In Fixes Bugs in a CEO Romance and Gets Rich

Yu Ruoyu transmigrates into a world where three CEO romance novels have merged, becoming a stand-in for the woman they never forgot.

She's the one universally despised older sister, standing in for three younger sisters named Yu Xixi who all look exactly alike.

Yu Ruoyu looks at her complicated identity. "...Since I can't escape the fate of being a stand-in, I've decided, "

System: "Decided what?"

Yu Ruoyu: "I'll make tons of money as a stand-in! No feelings, no sleeping together, just making cash!"

And so

At the Linjiang restaurant, the refined and handsome CEO No. 1 gazes tenderly at her while she plays [the fragile but stubborn innocent girl]. "Xixi, how about we go to that bookstore you like after dinner?"

Transaction complete.

Yu Ruoyu states the final charge: "Maybe next time. Please settle the fee for having dinner with you."

The No. 1 CEO's smile freezes. Reluctantly, he says, "...Book me for dinner tomorrow, too."

At the dessert shop, the handsome, star-like young man is completely captivated by her [cute, sunny girl] act. "I don't want you to be my big sister, Yu Xixi."

Transaction complete.

Yu Ruoyu, having received the balance, smiles faintly. "Then do you want me to be your ancestor? I wouldn't be opposed."

The No. 2 CEO leaves in a fury, but eventually can't help calling her. "Book me for my birthday! The whole day!"

In the villa, the bewitchingly handsome No. 3 CEO can't get enough of her [alluring, flirtatious femme fatale] act. "Xixi, tell me you love me, okay?"

Transaction complete.

Yu Ruoyu drops her customer-service smile, packs up, and prepares to leave. "If you want to know the answer, book early."

The No. 3 CEO: "...I'll pay five times the price. Answer me now."

This is a book full of textual bugs. Yu Ruoyu earns one million for every error she fixes, and gets extra rewards for rescuing the CEOs.

So strange things happen from time to time, like this

[Early in the morning, CEO No. 1, a crazed yandere, wakes up aboard a 200-square-meter boat. He tells you to put on the woman he never forgot's clothes and bring him a slice of water.]

Possible corrections: A. 200 square meters, B. boat, C. a slice of water

Yu Ruoyu finishes making the corrections. The next second, CEO No. 1 is lost at sea in a tiny 0.2-square-meter boat.

[At midnight, sharp-tongued, tsundere CEO No. 2 returns to the grave drunk, sits on a gauze hair, and insists that you come to the villa and help her open a nail.]

Possible corrections: A. grave, B. gauze hair, C. nail.

Yu Ruoyu finishes making the corrections. The next second, CEO No. 2 is sitting on sheer white gauze, surrounded by skeletons.

[At noon, the two-faced CEO No. 3 sits at a 100-meter-long table and tells the kitchen to prepare a table of brawny-man banquet dishes. You personally feed him his meal.]

Possible corrections: A. 100 square meters, B. brawny-man banquet, C. feed him

Yu Ruoyu finishes making the corrections. The next second, dozens of burly men burst in and start playing human Jenga on a one-square-meter table.

Later, the three women who had been away all return home one after another. They find the older sister everyone despised looking beautiful and dashing, driving a luxury car, living in a villa, and owning an expensive private yacht.

The CEOs are all hopelessly caught up in a love triangle involving the older sister everyone despised.

Reader's Notes:

1. The female lead is an all-rounder, capable of flying a plane and firing a cannon.

Theme: Study hard and stay optimistic