85: Chapter 85 Second Mock Exam

After the 30,000 yuan from A-017 arrived in his account, Jiang Lin consecutively secured two projects from the platform.

For 80,000 yuan, B-004 involved figuring out that the root cause of the unstable reproduction of a certain public factor was not the market or algorithm, but sample drift and changes in the cleaning caliber of the data version.

As for C-001, worth 150,000 yuan, it upgraded this troubleshooting experience into a complete data version stability inspection process prior to factor reproduction, turning it into a three-state state machine with brakes to deliver to the platform.

In both projects, he only provided specifications, samples, and training materials, retaining his own general tool library, audit_core.

With continuous learning, updates, and iteration, the tool library advanced to v0.3, and for the first time, the words "Future Proprietary Quantitative Research" were written into it.

The money was growing, and the demand had changed from "help me find errors" to "help me establish a system."

And the very next day after C-001 passed acceptance, Shen Chengye sent a new opportunity.

A small quantitative private equity fund wanted to audit its old factor library.

Without involving live trading, only checking historical research processes.

The door opened another layer inward.

And Jiang Lin, amidst his busy schedule, returned to Jiangcheng No. 7 High School.

The second mock exams were about to begin.

In the words of his head teacher, Lao Liu: "The second mock exams are not meant to prove whether you know how to solve problems or not. The teachers already have a rough idea of what level you can achieve right now."

"They are for the school, for the Academic Affairs Office, and for your parents to see. If your grades remain stable, it will be easier for the school to continue opening doors for you. The moment your grades drop, everyone's first reaction will be, 'Did we let this child run too wild?'"

...

During the Mathematics exam, after Jiang Lin got the paper, he first flipped to the last question.

Derivatives and inequalities synthesis.

Standard second mock exam finale configuration.

Parameters, monotonicity, zeros, and constant truth were nested together layer by layer.

After reading it, four paths instantly popped up in Jiang Lin's mind.

The first: construct an auxiliary function and take the standard high school derivative route.

The second: compress the proof using convexity language.

The third: curve the parameters and convert them into geometric comparisons.

The fourth: cut off the intermediate process using a colder integral estimation.

The fourth was the fastest.

But not friendly for grading.

The second was elegant.

But if the grading teacher did not accept the phrasing, it would needlessly incur the risk of losing points.

The third was suitable for competitions.

Not suitable for the second mock exams.

He finally chose the first.

The slowest, the most stable.

The most like a standard answer.

The test paper would not automatically give you points just because you saw things from a higher perspective.

Real World systems only recognized expressions they could identify.

Jiang Lin wrote very clearly on the answer sheet.

Domain of definition.

Differentiation.

Classification discussion.

Monotonic intervals.

Endpoint limits.

Constructing a difference function.

Differentiation again.

Finally reducing to constant truth.

Every step left enough scoring points for the grading teacher.

When the bell rang at the end of the mathematics exam, a suppressed sigh echoed across the examination hall.

Someone cursed under their breath: "Who wrote the third question of the last problem? Does his family not have doors?"

...

Physics was the subject Jiang Lin wrote the most comfortably in.

The exam paper creator was too honest.

The last experimental question tested measuring acceleration using a photoelectric gate and a slider, and then finding a certain combined physical quantity through the slope of the graph.

The question gave a set of data, asking to judge whether a certain set of data with large deviations should be eliminated, and to analyze the main sources of error.

What Jiang Lin saw at first glance was the measurement chain.

The installation height of the photoelectric gate.

The width of the shading piece.

Whether the air track was leveled.

Whether the initial velocity of the slider was controllable.

The timer resolution.

Whether repeated releases at the same position were truly the same position.

The weight of the image's slope.

Whether the abnormal point was a false trigger by the instrument, or whether the release action itself introduced systematic bias.

These things unfolded a complete set of real experimental imagery in his mind.

But he couldn't write too much on the answer sheet.

High school Physics only needed answers it could accommodate.

So he wrote: Graphical processing should be used; it is inappropriate to calculate the slope using only two points.

Data points that significantly deviated from the overall linear trend need to be judged in conjunction with experimental records and cannot be mechanically eliminated.

The main errors may come from the track not being completely level, measurement errors in the width of the light blocker, inconsistent release positions, and timer resolution limits.

Taking the average of multiple measurements can only reduce random errors and cannot automatically eliminate systematic errors.

This sentence was already sharp enough within high school answers.

Going further down was the world of Jiangda University's laboratory.

It did not belong to this test paper.

Chemistry and Biology—Jiang Lin wrote even faster.

For the last industrial process question in Chemistry, he was not frightened by the long process.

Feeding, impurity removal, pH adjustment, precipitation, filtration, washing, calcination, and circulating mother liquor.

The essence remained conservation, equilibrium, solubility product, oxidation-reduction, and process boundaries.

For the Biology genetics question, he first drew the pedigree, then marked the genotype possibilities, and finally calculated the probability.

The questions did not create any knowledge pressure for him.

What he truly needed to be careful about was not missing the qualifiers in the question stem because of reading too fast.

English was scheduled for the last day.

Before the listening test started, a familiar background current noise came from the examination hall's broadcast speaker.

When Jiang Lin heard that background noise, he instinctively judged that the speaker had a slight poor contact.

Then he suppressed this thought.

The listening materials were not difficult, nor was the reading comprehension.

There was a very subtle contextual transition in the cloze test, and the composition required writing an invitation letter about the school's science and technology festival.

The room for point deduction in English was mainly in expression naturalness and details.

He did not pursue extremes and wrote very steadily,

When the exam ending bell rang, the entire examination hall felt as if a valve had been loosened by someone.

The sound of desks and chairs, sighs, some people laughing, others complaining.

Some people started comparing answers, only to be angrily scolded to shut up by others.

...

When leaving the school gate, he happened to run into Sun Ming.

"It's over!" Sun Ming behaved entirely like someone released from prison after serving their sentence.

"Yeah, it's over."

"How come you don't have any reaction at all?"

Jiang Lin thought for a moment and said: "Because there are still many things that aren't over."

Sun Ming was stunned for a moment and asked: "For example?"

Jiang Lin did not answer.

For example, the project funds for C-001 haven't arrived yet.

For example, the audit of the private equity's old factor library hasn't been looked at yet.

For example, after reducing the frequency of Jiangda University's literature index, there was still the slow drift problem of P-003 that hadn't been completely cleared.

For example, the countdown for the seventh Wasteland teleportation was still ticking.

But none of these could be said.

So he only said: "The Gaokao is not over yet."

Sun Ming slapped his forehead: "Damn, your reminder is too cruel."

...

The results of the second mock exams came out two days later.

Lao Liu did not lose his composure in the office like he did during the first mock exams.

He just held the printed report card and looked at it for a long time.

Then he took off his glasses and wiped them clean.

And put them back on.

Grade ranking: 1st.

Citywide ranking: 1st.

Total score: 736.

Chinese: 139.

Mathematics: 150.

English: 147.

Physics: 100.

Chemistry: 100.

Biology: 100.

Except for Chinese and English, all were full marks.

Looking at that string of numbers, Lao Liu's first reaction was not shock.

Instead, he let out a sigh of relief.

It stabilized.

Jiang Lin had done too many things recently, and more importantly, he couldn't understand many of them.

Because he didn't understand, he felt anxious.

If the second mock exam grades dropped, even if it just dropped into the top ten citywide, he would have to face the skepticism of the director of academic affairs, parents, and other teachers.

Now he didn't have to.

A score of 736 was sitting right there.

All doubts were temporarily suppressed back beneath the paper.

Director Wang, the director of academic affairs, quickly saw the scores as well.

Like a strapping young man, he excitedly shook his fist and sighed: "This score is enough."

Lao Liu smiled slightly.

Indeed, it was enough.

Enough for the school to continue believing in him.

Enough for his parents to continue feeling at ease.

Enough for him to continue maintaining the superficial identity of a high school student in the Real World.

The reaction in the classroom was not nearly this restrained.

When the report card was posted, the hallway was instantly crowded with people.

"736?"

"All three of his science subjects are full marks?"

"Not just that, Mathematics is full marks too."

"Is this a second mock exam score that a human can possibly get?"

"Chinese and English still had fourteen points deducted, which shows he's still human."

"Listen to what you're saying, how presumptuous."

Sun Ming stood outside the crowd, looking at the report card and remaining silent for a long time.

When Jiang Lin came out of the classroom, he said gloomily: "Brother Jiang."

"Hmm?"

"What do you call this?"

Jiang Lin glanced at him.

Sun Ming said earnestly: "Amidst your busy schedule, you casually slaughtered the leaderboard."

Several people nearby immediately burst out laughing.

Returning home in the evening, Zhang Xiufen already knew the scores from the class parent chat group.

She wasn't so excited that she couldn't speak like the first time.

But while cooking, the sound of the spatula hitting the edge of the wok was livelier than usual.

At the dining table, she picked up a piece of pork rib for Jiang Lin: "Have you lost weight again recently?"

Jiang Lin looked down at his own hands. Ever since his trips to the Wasteland World, he chewed his food slowly and carefully every time, eating as much as possible,

striving to eat himself into a fat person.

Unfortunately, he had never been able to fulfill this wish.