Police Detective

"Hello, classmates." Bai Song bowed first, and the students immediately became quiet.

It's rare to see a teacher bow when he comes up, so Bai Song suddenly caught everyone's attention.

"I am a policeman." Bai Song said in a surprising way, which caused many students to exclaim. After studying for so many years, this was the first time that someone came up and actually said that he was a policeman.

"Perhaps no one knows me. In fact, in the last class, I sat down and listened. Professor Tang may have seen that I wasn't paying attention in class. No, he called me to the podium."

Bai Song's cold humor still made everyone laugh, and the atmosphere became much better.

At this time, someone whispered that someone knew him! Speaking of which, Bai Song can be considered a small blogger, especially the last gold case, which still caused a certain amount of discussion among many students majoring in the chemistry department.

Because it involves hydrofluoric acid corroding floor slabs, even professionals don't dare to play with it in actual operations. As a result, there were so many follow-ups, which is really an interesting case.

After this back and forth, everyone spread the news to each other, and many people knew that Bai Song was indeed a police officer in Tianhua City, and he was also a criminal police officer, which caused many people to gossip.

Perhaps due to the influence of TV series, many people assume that special police officers are better than criminal policemen, and criminal police officers are better than civilian policemen. So when everyone mentioned that this is a criminal policeman, they immediately became more interested.

Before the lecture even started, there was a good classroom effect. This was something Bai Song didn't expect. The nervous feeling he had just come up was basically gone.

Bai Song put his hands twenty centimeters in front of his belly, spread his hands upward, signaling for a moment of silence, and continued: "Today, we are going to talk about chemistry in life, mainly about chemistry related to plastic surgery."

Even though everyone is a high-achieving student, Bai Song has been preparing for a full week of classes, and there is still a lot to talk about, especially about plastic surgery, beauty, and medicine, which has indeed aroused the interest of many people.

Twenty minutes into the class, Bai Song's cell phone rang.

Due to work reasons, Bai Song never muted his cell phone. Bai Song took it out and took a look. It belonged to Liu Shuyuan. He didn't know what the big deal was, so he could only apologize to his classmates, turned off the microphone, and answered the phone.

"What's the matter?" Bai Song looked a little serious.

"It's cloudy today, so we sent people to the hospital, but the 13th floor was closed," Liu Shuyuan said.

"It's okay. It's normal that it's not open on cloudy days." Bai Song lowered his voice and covered his mouth.

"Could it be because we alerted the enemy?" Liu Shuyuan was a little worried.

"No, if they had alerted the enemy, they wouldn't have let the truck out shortly after we came out yesterday." Bai Song said: "On a cloudy day, if the lights on the thirteenth floor are too bright, it will be easy to spot outside."

"That's good." Liu Shuyuan breathed a sigh of relief: "By the way, what are you doing? Why is your voice so low?"

"Let's not talk about that for now, I'm giving a lecture." Bai Song returned to normal volume.

"Lecture, oh oh oh, you said it yesterday."

"Well, that's it. Let me know if there are any other developments in the case."

After Bai Song finished speaking, he hung up on Liu Shuyuan.

"The policeman looks so handsome when he is serious."

"Yes, his face suddenly changed. He's really handsome."

Although Bai Song didn't turn on the microphone, those in the first few rows could still hear the few words he said at a normal volume. They generally knew that Bai Song had arranged a temporary case, which aroused everyone's gossip.

And he has good ears. Once he calms down, he can basically hear everything that is being said below. Now that he is listening to what is being said below, he can't help but blush.

Bang bang bang.

Someone clapped.

Bai Song took a look, who else could it be if it wasn't Wang Huadong?

Applause can be contagious. Everyone applauded and booed, asking Bai Song to talk about the case.

"I'm sorry, this case is confidential." Bai Song apologized to everyone, "Let's continue the topic just now."

Bai Song was quite comfortable talking about this. Perhaps everyone was of high quality and did not embarrass him, so he was able to answer several questions, and the atmosphere in the class gradually recovered.

When talking about a topic about subcutaneous injection drugs, Bai Song suddenly froze for a moment while he was talking. He was still a little unskilled and had to flip through his notebook before continuing.

Old Tang asked Bai Song to speak for an hour, and Bai Song planned to speak for 45 minutes. In the end, he spoke for 50 minutes in a back-and-forth manner, and the effect was not bad.

Bai Song even saw a few people taking notes, which really gave him a sense of accomplishment.

"Thank you all for listening to my communication. Chemistry is a magic. I hope that everyone can use the magic wand in their hands and become talents in various fields in the future. Thank you." Bowing again, Bai Song got off the podium.

Hearing applause again, Bai Song made an invitation gesture to Ding Jianguo and handed the podium to her.

As a result, as soon as the young lady stood up, the whole class burst into thunderous applause. Even before people get to the podium, the effect is countless times better than that of Baisong!

Moreover, the man in the assistant coaching position in the first row almost broke his hand!

Bai Song originally wanted to express his gratitude for Wang Huadong's applause, but he was speechless when he saw this.

This is the brother?

Ding Jianguo's voice is very contagious. Today, he is not giving some esoteric chemistry lessons, but telling the master's level chemistry researchers here some experiences on graduation thesis writing and experiments.

This is real and useful knowledge. Everyone here, as long as they have not graduated with a Ph.D., is facing this problem. As for the person who gave the lecture above, it is said that his doctoral thesis was published in an internationally renowned publication, and SCI and the like were given mercy.

But this is of little use to Bai Song. He will definitely not be able to study these professional knowledge.

Manpower is sometimes exhausted, and even Einstein is not as good as ordinary people in many ways.

For example, his Chinese is not as good as anyone here!

Wang Huadong turned to Bai Song, wrote a few words in the notebook, and handed it to Bai Song.

"I saw you were stunned for a moment when you were giving the lecture. Is something wrong?"

He still knows Bai Song very well. Every time Bai Song is stunned, his brain circuit is often connected to something, and this can often lead to the solving of a certain case.

"When did you become so observant?" Bai Song took a pen and wrote in a notebook.

"Don't forget what I do." Wang Huadong then wrote: "What is it, can you tell me?"

"Don't worry." Bai Song wrote: "I have an idea that needs to be verified. If it is true, then there should be an opportunity to solve this case."

The case will begin to be solved tomorrow, and Chapter 5 will come to an end.

Isn't it sudden?

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