After eating, the two went to the academy building together.

Yili Wu is the subject leader of environmental chemistry in the School of Environment and Resources, and is an absolute heavyweight professor in the school.

Not only does she have a large separate office, but she also has a lot of people underneath, including her own master's and doctoral students, as well as some teachers in the college. Of course, the latter is basically a lecturer or associate professor, and the full professor level is generally "self-reliant", has his own project topic, and rarely works under other professors.

The work of scientific research experiments is different from the usual work, and the working hours in the laboratory are often uncertain.

Sometimes the experiment is halfway through without interruption, so even if it's meal time, even in the middle of the night, you have to continue.

Because of this, there are generally no rigid rules for working hours in the laboratory. An experiment can be completed on your own reasonable schedule, and there is no hard and fast rule of 9 to 5.

Although it was the time to take a break from work at noon, there were still quite a few people in the college building.

The people I met on the road all greeted Wu Yili one after another, and at the same time, they all inevitably looked at Ge Dongxu with curious eyes.

Although this is normal, after all, it is the person brought by Professor Wu, but Wu Yili always has an inexplicable feeling of being a thief in her heart, which makes her feel very annoyed with herself.

Obviously, he just brought a student to intern, why do he need to be a thief?

Wu Yili's office is on the third floor, and most of the people she brings, as well as the laboratories and instruments she is responsible for, are also on the third floor.

"This is my office. Wu Yili used the key to open the office door on the left hand side of the stairs with the words 303.

The office is simply furnished, with desks, chairs, sofas for guests, coffee tables, and a bookshelf full of books, with no furniture to decorate.

If it weren't for the pot of bamboo and phalaenopsis placed on the side of the window sill on the desk, adding a little green spring to the office, this office would really look too solemn and rigid, and it would be difficult for people to associate such an office with a beautiful professor.

"Just finished eating, let's have a cup of tea, and I'll take you to the lab and your office later." Wu Yili asked Ge Dongxu to sit down, and then made him a cup of Longjing tea.

There are two people in the office, Ge Dongxu and Wu Yili, Ge Dongxu naturally does not need to be polite, takes the teacup, leans on the sofa and drinks tea leisurely.

After drinking tea, Ge Dongxu went with Wu Yili to visit various laboratories, as well as various precision instruments inside, such as liquid chromatography, gas chromatograph, atomic absorption instrument, plasma spectrometer and so on.

These instruments are relatively high-end precision instruments, Ge Dongxu can not be touched in high school, and when he arrives in college, he will be slowly exposed to the later professional courses, and it is mainly the theoretical knowledge of instrument work.

Wu Yili knew that Ge Dongxu's current studies had not yet reached the stage of contacting these instruments, so she just made a brief introduction and took him to the big laboratory.

The shelves of this laboratory are filled with all kinds of solutions, chemicals, and many droppers, beakers and other experimental tools.

There are two people in the lab who are busy, one preparing the solution and the other doing the titration.

Whether it is the preparation of solutions or the titration work, I have learned in high school chemistry, and there have been experiments in this area in high school, but it is far less rigorous than in the real laboratory, mainly to let the students understand what is going on.

"Professor Wu!" When the busy two saw Wu Yili coming in with a young man, they all looked up and called, and then looked at Ge Dongxu with curiosity.

"Let me introduce you, this is Ge Dongxu, a freshman in environmental chemistry, who will be my experimental assistant from today. Both of them are my master's students, one is named Guo Baba and the other is Zhang Mengxuan. Wu Yili introduced.

It is very rare for freshmen to start to come to the laboratory for internship, and the current Ge Dongxu not only came to the laboratory for internship in the second half of his freshman year, but Professor Wu Yili also personally took him to visit the laboratory, and listened to her, in the future, this freshman will not belong to the kind of graduate students who wash the cups and do chores, but will be her experimental assistant.

Freshmen become experimental assistants for subject leaders!

When Guo Baba and Zhang Mengxuan thought of this, their faces couldn't help but show a look of shock, especially after Guo Baba was shocked, a pair of small eyes looking at Ge Dongxu flashed with gossip light, if it weren't for Professor Wu's presence, it is estimated that he would have rushed up to grab Ge Dongxu and ask non-stop.

"You don't have much exposure to experiments at the moment, so you can learn to do some basic experiments with them here at first. After introducing the two parties, and after they greeted each other, Wu Yili said to Ge Dongxu with a smile.

"No problem, I'll start learning to do it with them later. Ge Dongxu nodded.

As he spoke, Ge Dongxu looked at Zhang Mengxuan, who was conducting a dropping experiment.

At this time, Zhang Mengxuan grabbed the burette with her left hand to control the piston, and dropped it into the Erlenmeyer flask held in her right hand one by one. As the liquid in the burette dripped into the Erlenmeyer flask, her right hand shook the Erlenmeyer flask at a uniform speed.

Zhang Mengxuan is calibrating the concentration of nitric acid solution. Guo Baba was obviously a familiar person, and when he saw Ge Dongxu looking at Zhang Mengxuan, he leaned over and explained.

"Right, use sodium hydroxide for calibration?" Ge Dongxu's chemical knowledge is still very solid, as soon as Guo Baba said, he blurted out.

As soon as Ge Dongxu spoke, Zhang Mengxuan's titration speed slowed down significantly, and when a drop of sodium hydroxide solution dropped into the Erlenmeyer flask, the originally colorless nitric acid solution in the Erlenmeyer flask suddenly turned pink.

Seeing this scene, Ge Dongxu suddenly shook his whole body, and his eyes swelled, as if he saw a pink pill forming in the Erlenmeyer flask.

"Acid-base neutralization, the number of hydrogen ions and hydroxide ions is equal, the acid-base can be completely neutralized, and the solution can reach pH balance. Isn't alchemy the same? Only when the five elements turn into qi, one yin and one yang are balanced, can one become a pill, otherwise the five elements of yin and yang are out of balance, how can one become a pill? I only know that the medicine is added to it according to the ancient formula, but I don't know that the ancient formula only gives an approximate amount, but it is necessary to increase or decrease it at any time according to the changes of the five elements of yin and yang during alchemy. Just like this acid-base neutralization calibration, it needs to be accurately neutralized drop by drop. Ge Dongxu's mind flashed like lightning, and he actually thought of the balance of yin and yang between heaven and earth from the chemical acid-base neutralization, so as to understand the reason for his alchemy failure.

"Dongxu, what's wrong with you?" When Ge Dongxu was in an epiphany, Wu Yili's concerned voice suddenly sounded in his ears, and he was shocked, and when he came back to his senses, he found that Wu Yili was looking at him with concern, while Guo Baba and that Zhang Mengxuan looked at him like a monster, obviously not understanding how this guy was so good, his eyes suddenly straightened, and the whole person became stunned.

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