At around three o'clock in the afternoon, the test results of this iron sheet came out.

There was no contraband, but trace amounts of sodium hypochlorite were detected.

This thing is particularly common, which is the main ingredient of 84 disinfectant.

The main ingredient of 84 disinfectant is sodium hypochlorite, although it is an oxidizing agent, the oxidation is not strong. However, the hypochlorous acid produced by the hydrolysis of sodium hypochlorite under light conditions will decompose to produce trace amounts of hydrochloric acid and oxygen, so it can slightly corrode the metal, and it can also corrode some binders of the metal.

According to the test results, the reason why this board can fall off has a lot to do with the persistent corrosion of hydrochloric acid, that is, this place has been disinfected by 84 disinfectant I don't know how many times.

This is not the inside of the carriage, why is it so thoroughly disinfected?

Bai Song even suspected that there was some bacteriological weapon being studied in this building!

"What's the matter, could this be some kind of secret organization that was washed away by our flood in the Dragon King Temple?" Bai Song asked.

Liu Shuyuan shook his head, he knew a lot of things, if it was really the case, it was impossible for him not to know.

"It's hard to say that many units that produce drugs or research and development institutions that develop biological products also have strict control over disinfection. Sister Zhang, who was in charge of the test, said.

"Well, thank you so much. Liu Shuyuan continued to chat with her for a few words, brought things and a simple report, and set out on the way home with Bai Song.

...

Back at the unit, Bai Song packed up his things, and it was almost time to get off work, so he did push-ups in the house, and followed Liu Shuyuan to the dinner in the evening.

Today, there are no outsiders, they are all in the system, and not only in the public security system, but also in some government people, the oldest is not more than 35 years old, and they are all young talents.

In addition to Bai Song, Wang Huadong and Liu Shuyuan, there are five or six senior brothers from this school. These senior brothers before Bai Song were basically directly assigned to the Municipal Public Security Bureau, and now they are the mainstays of various organs and departments.

Because they are all their own people, they are not so restrained in speaking. Liu Shuyuan didn't have Zheng Chaopei's local tyrant posture, he just found a quiet big room, but the atmosphere was more harmonious.

The delightful dinner ended quickly.

This day has gained a lot, whether it is in the criminal department or eating at night, it has accumulated a lot of popularity for Bai Song. It was also the first time he had some friends outside of the Nine Rivers Bureau.

Of course, there is also the Economic Investigation Corps, but as I said before, I am not afraid of offending anyone if I don't do well here, because there will be less contact in the future. In the same way, there are really not many opportunities for future cooperation with friends here.

But these people I know today are all comrades-in-arms who will cooperate for a long time in the next few decades, and they are closer to the trenches.

After a glass of wine, Bai Song took a taxi home.

Since that incident in April, Bai Song has never put himself in a relatively unconscious state.

After arriving home, Bai Song prepared for tomorrow's class, and felt almost over, before falling asleep.

Tomorrow's class is still very important, and to be able to give a lecture in front of so many top students, if you can win a little applause instead of boos, it will be an unforgettable experience.

...

On Saturday morning, Wang Huadong came to pick up Bai Song, and the two went straight to the university.

"You cleaned up so energetically today!" Bai Song was a little speechless when he saw Wang Huadong's appearance. I've known him for so long, and it's the first time I've seen him in a suit and leather shoes! Even at last night's party, I didn't see him so neat.

"Isn't this listening to your lecture, dress formally, and support you for the scene. Wang Huadong said with a smile.

"Pull it down, if you want to chase other girls, just say it, what are so many things..."Bai Song sarcastically said: "At first glance, you are inexperienced, how can you wear a suit to chase people, how old-fashioned you look." ”

"Huh?" Bai Song said that Wang Huadong was really nervous, "Really?"

"Look at you like that. Bai Song looked disgusted: "However, I have inquired for you, this girl is indeed still single, come on." ”

"Do you still have this connection?" Wang Huadong was very happy to hear this.

"I called Professor Tang directly to ask. The girl's name is Ding Jianguo, 29 years old this year, the second year of postdoctoral fellowship, and I are fellow villagers and from Blue Bird City. Old Tang said, if I know any young talent and hurry up to introduce him, this girl can't be controlled by ordinary people. Bai Song smiled and said, "I directly told Professor Tang what you were." ”

Wang Huadong stepped on the accelerator with a foot on the brake, and the car jumped out all of a sudden, almost chasing the rear. Bai Song's natural switching between the titles of "Old Tang" and "Professor Tang" made Wang Huadong wonder whether Bai Song was ridiculing him or seriously, and scolded: "Damn, are you sick?" I haven't said anything yet..."

"Old Tang said look at you well, originally he was going to introduce a returnee doctor to his student to meet, but I said this, he didn't arrange it for the time being. Bai Song interrupted Wang Huadong's words.

Wang Huadong was silent for half a second, "Brother, what do you want to eat at night, I'll treat you." ”

......

There are more people today, and the last courseware has caused a certain discussion on the campus network.

People are sometimes superstitious about authority, even if it's the same thing.

For example, if you are a high school student, you have finished studying electromagnetic radiation, and you go home and tell your grandfather that there is actually no radiation on mobile phones, and there is no high-voltage electricity, and he will not believe it. But if the academician says it, he will believe it. Even if you say a word, it's not bad.

Professor Tang happens to be one of the authorities, so several topics have also been searched on a certain and a certain blog.

This is indeed a cake that has touched a lot of people, especially some big cakes in the cosmetics industry, but in today's class, no one has come to find trouble.

In case Old Tang talks about quantum chemistry for a day today, wouldn't it be embarrassing that many people below won't even be able to pick thorns.

Of course, no one thought that Professor Tang would not come to today's class at all!

It is not good to find your own doctoral post-graduate class in a normal class, after all, the teacher is also one of the jobs. But Lao Tang's coffee position is obviously not restricted, and the school administration will not take care of this kind of open class on weekends.

Moreover, Ding Jianguo is also very famous in the school, a beautiful doctoral student. Oh no, now I've graduated with a PhD... This is also a legendary figure, it is said that he was not good when he was about 20 years old, and then gradually matured, and the charm made many people not even have the courage to pursue it.

However, no one expected that it was a young boy who came to the stage to give a lecture.

This immediately caused the following whispers. And the eyes of the few student council members who stopped Bai Song last time were straight!

This is really a teaching assistant!

Bai Song smiled and looked at a few students of the student union, and saw that several first-year children were furious in their hearts.

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