After dinner, the two went to the college building together.

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

Not only does she have a separate large office, she also brings many people under her, including her own master's degree, doctoral degree, and some teachers in the college. When the latter is basically a lecturer or associate professor, the full professor's level generally "start a business" and has his own project, and rarely work under other professors.

Scientific research and experimental work is different from usual work, and the working hours in the laboratory are often uncertain.

Sometimes the experiment cannot be interrupted halfway, so even the meal time, or even in the middle of the night, have to continue.

Because of this, under normal circumstances, there will be no rigid regulations on working hours. As long as you arrange your time reasonably to complete an experiment, there will be no rigid regulations from 9 to 5.

Although it is the afternoon time to get off work, there are still many people in the college building.

Everyone I met on the road greeted Wu Yili, and at the same time, they could not help but look at Ge Dongxu with curious eyes.

Although this is normal, after all, it was brought by Professor Wu, Wu Yili always felt guilty inexplicably, which made her very annoyed by herself.

I was obviously just bringing a student to the internship, so why do I have to be a thief and feel guilty?

Wu Yili's office is on the third floor, and most of the people she takes, as well as the laboratories and instruments she is in charge are also on the third floor.

"This is my office." Wu Yili used the key to open the left side of the stairs, and the office door with 303 was written.

The office layout is very simple, with desks, chairs, sofas, coffee tables for guests, and a bookshelves filled with books, and no furniture decorations.

If it weren't for the fact that there was a pot of bamboo and phalaenopsis placed on the windowsill of the desk, which added a little green spring to the office, the 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 the meal, have a cup of tea first. I will take you to the laboratory and your office later." Wu Yili asked Ge Dongxu to sit down, and then made him a cup of Longjing tea.

There were only Ge Dongxu and Wu Yili in the office. Ge Dongxu naturally didn't need to be polite. He took the teacup and leaned on the sofa and drank the tea leisurely.

After drinking tea, Ge Dongxu visited various laboratories with Wu Yili, as well as various precision instruments inside, such as liquid phase, gas chromatograph, atomic absorption meter, plasma spectrometer, etc.

These instruments are relatively high-end precision instruments. Ge Dongxu could not come into contact with them in high school. He would not be able to come into contact with them in later professional courses when he was in college. Moreover, it was mainly theoretical knowledge of instrument work. The specific operations were generally explained by the teacher, and students would learn it after doing it a few times.

Wu Yili knew that Ge Dongxu's current study had not reached the stage of getting involved in these instruments, so she just gave a brief introduction and took him to the large laboratory.

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

There were two people busy in the laboratory, one was configuring the solution, and the other was doing titration work.

Whether it is solution configuration or titration, we have learned chemistry in high school. There have been experiments in this area in high school, but they are far less rigorous than in real laboratories. The main purpose is to let students understand what is going on.

"Professor Wu!" The busy two people saw Wu Yili bringing in with a young man, they all raised their heads and called out, and then looked at Ge Dongxu with curious eyes.

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

It is rare for freshmen to start in the laboratory for internships. Ge Dongxu, who is in front of him, not only came to the laboratory for internships in the first half of the semester, but Professor Wu Yili also took him to visit the laboratory in person. And what she meant, in the future, this freshman would not be the kind of person who washes cups and does chores for them, but would be her experimental assistant.

Freshman is an experimental assistant to the subject leader!

When Guo Baba and Zhang Mengxuan thought of this, they couldn't help but look shocked on their faces. Especially after Guo Baba was shocked, their eyes that looked at Ge Dongxu were even more glittering with gossip. If it weren't for Professor Wu, he would probably have rushed up to pull Ge Dongxu and asked nonstop.

"You have few experiments at the moment. You can learn to do some basic experiments with them at the beginning." After introducing them to both parties, and after they greeted each other, Wu Yili smiled and said to Ge Dongxu.

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

As he said that, Ge Dongxu looked at Zhang Mengxuan, who was conducting a little experiment.

At this time, Zhang Mengxuan grabbed the burette with her left hand and controlled the piston, dripping it into the conical bottle she was holding with her right hand drip. As the liquid in the burette drips into the conical bottle, her right hand shakes the conical bottle at a constant speed.

"Zhang Mengxuan is performing the concentration of nitric acid solution." Guo Baba was obviously a familiar person. When he saw Ge Dongxu looking at Zhang Mengxuan, he came over to explain.

"Use sodium hydroxide to calibrate, right?" Ge Dongxu still has solid knowledge of chemistry. As soon as Guo Baba said, he blurted out.

As soon as Ge Dongxu said, Zhang Mengxuan's titration rate was significantly slower. When a drop of sodium hydroxide solution dripped into the conical flask, the colorless nitric acid solution in the conical flask suddenly turned pink.

Seeing this scene, Ge Dongxu suddenly shook his whole body, and his eyes were soaring, as if he saw a pink pill forming in the cone bottle.

"Earth and alkali neutralization, hydrogen ions and hydroxide ions are equal, and the acid and alkali can be completely neutralized and the solution reaches the pH balance. Isn't it the same to alchemy? Only when the five elements turn into qi, one yin and one yang balance can it become an alchemy. Otherwise, how can the Yin and Yang and the Five Elements become unbalanced, so how can it become an alchemy? I only know to add medicine according to the ancient formula, but I don't know that the ancient formula only gives an approximate quantity, but it still needs to increase or decrease at any time according to the changes in the Yin and Yang and the Five Elements during the alchemy. Just like this acid and alkali neutralization calibration, it needs to be neutralized drop by drop." Ge Dongxu's mind was like lightning, and he actually thought of the yin and yang and five elements balance between heaven and earth from the chemical acid and alkali neutralization, so he understood the reason for his failure in alchemy.

"What's wrong with you, Dongxu?" When Ge Dongxu was in an epiphany, Wu Yili's concern suddenly sounded in his ears. He was shocked and came to his senses. He realized that Wu Yili was looking at him with concern, while Guo Baba and Zhang Mengxuan were looking at him like monsters. Obviously, they didn't understand why this guy suddenly had his eyes straight and he became stupid.

??The third update is over today, thank you for your support.

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Chapter completed!