"Did you forget to check the quality of the watch glass..." Shen Yiyun raised his glasses in a panic, pressed the electronic scale a few times, then swallowed and looked at the display screen again.

The trembling became more intense.

His expression also tightened.

"This...impossible...how could there be so much..." Shen Yiyun stood up tremblingly and asked Shi Yang, "You clearly added one milliliter more piperidine. Did I read it wrong?"

"Okay." Shi Yang still didn't have the courage to look directly at his eldest sister, and only showed his plump side face for her to admire, "But it's not an extra ml, but 0.78 ml."

Shen Yiyun scratched his head and said in shock: "A drop is 0.05 ml, how could you be accurate to 0.01!"

"Otherwise, what are you going to do with a high-precision syringe?" Shi Yang then aimed at the syringe on the table, "Within 0.5 ml, I can use my hands."

"Even so..." Shen Yiyun put his hands on the table and asked unwillingly, "Why is it 0.78? Why?"

"Hmph." Shi Yang suddenly raised his eyes and raised the corners of his mouth slightly, "Feel."

"Ouch..." Shen Yiyun dropped his glasses and almost cursed, "Can this also be based on feeling?"

Li Zheng was caught in the middle, and he felt that the atmosphere between the two was very terrifying. It seemed even more terrifying than the decisive battle at the top of the Forbidden City.

What's even more terrifying is...

He doesn't quite understand.

It's okay, don't be ashamed to ask.

"Well, I'm a bit of a noob... just asking." Li Zheng walked to the stage and picked up the piperidine reagent bottle, "Piperidine acts as a catalyst in this reaction, right?"

Shen Yiyun replied: "Yes...Normally speaking, the volume ratio of piperidine and diethyl malonate should be 1:1. Converting it, in our reagent concentration, the volume ratio should be 1:1: 10, that is, for every 10 ml of diethyl malonate, there is 1 ml of piperidine.”

"This is just the most conservative strategy." Shi Yang said with a smile, "It is impossible to achieve high productivity by being conservative."

Shen Yiyun stared at the white crystal in front of him and said: "Here's the problem. Increasing the dose of piperidine can indeed increase the yield, but the alkalinity and carbanions will also increase, which will lead to its interaction with The coumarin-3-carboxylic acid ethyl ester produced in the process further generates amide, which greatly reduces the yield."

"So, the heating reflux should be fast." Shi Yang flexed his fingers and sneered, "Compress the standard one-and-a-half-hour heating process to within an hour. You know, the heating reflux is dynamic. The internal pressure and reaction liquid level will change at any time. Everything is changing, so just using a conservative constant temperature cannot achieve the fastest reaction rate. Dynamic adjustment is only possible by my constant observation."

"Is this... is this also part of your calculation?" Shen Yiyun was shocked, "I thought you were just grabbing time..."

"It is true that we are competing for time, but this is not calculation, but feeling." Shi Yang emphasized again.

"Feeling..." Shen Yiyun was a little confused, "How can you rely on feeling in chemical experiments..."

"It's just that you haven't done enough."

"..." Shen Yiyun cursed secretly and punched the table in anger.

I...didn't do enough?

Just one month into my first year of graduate school... I was put into the laboratory by my tutor... working 10 hours a day...

Isn’t that much?

For the first time, Shen Yiyun wanted to beat someone up.

In Li Zheng's vision, a quiet elder sister was gradually evolving into a violent elder sister.

But at the same time, Li Zheng was also trying his best to absorb the academic spirit gushing out from Shi Yang's nonsense.

A truly great chef will definitely not follow a formulaic and standard process when cooking.

He will dynamically adjust the cooking techniques and the dosage of condiments based on factors such as the freshness of the ingredients, the tenderness of the ingredients, the feel of the pot, the oil quality, etc.

These adjustments are absolutely impossible to calculate quantitatively.

It’s a feeling, it can only be a feeling!

This feeling can only be cultivated by a chef who has been immersed in it for many years, constantly strives for self-improvement, is unwilling to fall into some easy fixed process, and always wants to constantly challenge himself.

In comparison…

Li Zheng looked at Shen Yiyun, who was holding the table and panting.

Although the eldest sister is also one of the best in the world.

But he was shackled by the heavy and repetitive work in the laboratory...

Gradually I followed the process and gave up using my brain.

Enjoying the convenience brought by shortcuts, we ignore the growth that comes with thorns.

Senior sister.

you.

Already lost.

"Then...there can't be so many..." Shen Yiyun stared at the crystal and said, "The biggest product loss in this experiment is that one of the steps must be washed with 50% ethanol, but at the same time, the ester will also be washed with 50% ethanol. Dissolved in ethanol...Product loss in this step is unavoidable."

"Of course I know that." Shi Yang walked to the wall step by step and silently patted a small refrigerator. "Sleepy people can't see the morning sun."

Shen Yiyun glared instantly: "Ethanol...is frozen???"

Li Zheng struck with both palms.

Wonderful.

As the temperature decreases, the reaction will slow down, but it will have little impact on the washing effect.

At the same time, the precious ester is retained to the maximum extent.

Wonderful.

"Fortunately, the freezing point of ethanol is low enough." Shi Yang raised his glasses, "Are there any questions, senior?"

Shen Yiyun gradually lowered his head and let his eyes go blank: "No...no more."

This guy is only a sophomore in high school...

Is my national fund so worthless...

Four years of undergraduate study.

Two years of postgraduate study.

What on earth am I doing?

For more than a year, I worked in the laboratory 10 hours a day.

What are you doing?

I from Ji Dahuayuan...

Is it so unworthy of mention...

Just when she was on the verge of collapse, Li Zheng came over at the right time.

"Shi Yang is indeed scary, but I believe that you, senior, must also be talented." Li Zheng sighed softly, "But if you treat experiments as work, you will definitely lose interest, right?"

ah.

Shen Yiyun groaned in his heart.

Yes, I don’t know when it will start.

I hate experiments the most.

Just finish today's tasks quickly.

All I can think about is eating and sleeping.

this is us.

A group of people known as Yanzhu.

"I...I'm not qualified to teach you..." Shen Yiyun took off his eyes, lowered his head, and sighed a little lonely, "I'm going to tell the instructor to find a senior brother with a doctorate."

"No, Shi Yang is not a mortal. Even if the instructor comes by himself, I'm afraid he will suffer," Li Zheng said emotionally, "Sister, although he doesn't need you, I need you. At least these days, take a rest and don't go The lab work is done, right here, starting from scratch, teaching me bit by bit, and let’s try to find the fun of chemistry again, isn’t that wonderful?”

ah.

Shen Yiyun was moved again.

If only you.

This is wonderful.

Shen Yiyun then rubbed his face, put on his glasses, and tried his best to show his dignity as a teacher.

"Junior, I...I am very strict." She said while avoiding Li Zheng's gaze.

"It's not strict. What am I doing here at Jida?"

"You are ambitious." Shen Yiyun then turned to look at Shi Yang, and suddenly his face was covered with a layer of frost. "I can't teach you, so you can leave."

"???" Shi Yang, who was leaning against the refrigerator, holding his forehead with one hand and showing off as a chemical expert, almost fell down.

Damn it, why?

Don’t girls admire strong men?

Am I not strong enough?

At this moment, he looked at Li Zheng and Shen Yiyun who were gathering together, packing up experimental equipment.

Shi Yang suddenly realized.

It’s motherhood!

Kenji’s big sister’s motherhood!

Motherhood that protects the weak!

It's right to think about it, don't those popular male idols all look like babies with tender skin and tender flesh?

Is there an idol who is a tough guy?

Oh shit.

Hello Li Zheng.

Pretending to be so good turns out to be a scumbag trick.
Chapter completed!