The chemistry of this time and space is difficult to explain. The basic knowledge of chemistry that Xie Yan learned at the beginning is now at the cutting-edge academic frontier.

He even needed to rebuild the chemical system.

There are also many compounds whose names are different from the original ones. For example, potassium permanganate is called "black acid powder" by Ming chemists. Although it is often used in experiments, they know nothing about the chemical composition of potassium permanganate.

.

Therefore, in the heating experiment of potassium permanganate, the chemical formula can only be expressed in words: black acid powder → gray acid powder + unknown acid + oxygen.

The first class only taught the basic concepts of chemistry and did not really get into the topic.

…

get out of class time.

After confirming that Xie Yan had gone far, the two students who were forced to stand finally breathed a sigh of relief.

Several other gangster students gathered around and pretended to express condolences to them. In fact, the laughter was more of a joke.

The two of them couldn't save their face, so they used the urine escape technique to go to the toilet.

"Is his beating like this in vain?" Ding Shaoyan asked.

Xing Dazhong said: "You can still fight back? He is a prince-in-law. Although he has no real power, if he meets him, even the cabinet ministers have to be polite. Besides, he is still a teacher. If a student makes a mistake, the teacher will punish him or let him go.

It makes sense everywhere.”

"I can't swallow this breath!" Ding Shaoyan said.

Xing Dazhong sighed: "Oh, admit it. From now on, we will just sleep in his class."

Young Master Ding said with a stern expression, "I will definitely look for opportunities to take revenge in the future!"

Xing Dazhong chuckled twice, knowing that this guy was just getting high.

Xie Yan strolled back to his office, and teachers and students came to greet him from time to time along the way.

Especially teachers who teach chemistry, because of the emergence of the agate balance, a lot of knowledge has been overturned by experiments in the past two or three months, and there is no time to compile new textbooks. They no longer know how to teach!

"I am still studying how to teach, and I am walking on thin ice." Xie Yan said to several chemistry teachers who came to visit his office.

This is not a lie, Xie Yan is also sorting it out.

Some of them have been proven by recent experiments, and some of them still have to be conducted by himself to draw conclusions.

After chatting with the chemistry teachers until almost noon, we all made an appointment to go to the cafeteria to have a small meal together. At this moment, Qingluan arrived with food.

"Didn't you say don't deliver food? It's so far from the city." Xie Yan was quite speechless.

Qingluan smiled and said: "It's been covered in the food box all the way. Lang Jun, hurry up and eat it while it's hot."

"The consort and the princess have a deep love for each other, which is really enviable."

"Since Bachelor Xie has a female envoy delivering food, we won't bother you."

"Thank you, Bachelor, see you again..."

The chemistry teachers left one after another.

The teaching assistant and two male followers also went to the cafeteria to eat together, leaving Xie Yan and Qingluan alone in the office.

Qingluan opened the food box and took out two vegetables and one soup. The bottom layer was full of rice.

From another basket, he took out a wine jug, a wine glass and a wine warmer.

"What am I doing drinking at school?" Xie Yan couldn't laugh or cry.

Qingluan said: "His Highness has ordered you. Mr. Lang is working hard at school. You can have two drinks at noon."

It's so hard, there are only two classes a day, and each class only lasts forty or fifty minutes.

There are also teaching assistants. Many times you are too lazy to teach, so you can ask the assistants to teach unimportant content. You can also leave things like preparing experimental equipment and conducting teaching experiments to the teaching assistants.

In the future, if you are promoted to a teacher in an inner house, your teaching time will be even shorter.

"You haven't eaten yet?" Xie Yan asked.

Qingluan said: "I will eat when I go back."

Xie Yan said: "This much food is enough for two people, let's sit down and eat together."

Qingluan sat down awkwardly, feeling extremely happy.

She followed the princess all day long and rarely had the chance to be alone with Xie Yan, but now she could eat and drink at the same table with Xie Yan.

"Young lady." Xie Yan called her by her nickname.

Qingluan Tiansisi said: "Do you still remember Mr. Lang?"

Xie Yan said: "I always remember it, this is our secret."

There was only one cup, so Xie Yan filled it and handed it to Qingluan, while he simply poured it into his rice bowl and drank.

There is only one pair of chopsticks, which is not enough for two people, but you can use a spoon instead.

The two of them had a drink, and Qingluan said: "I will add wine and vegetables for you."

Qingluan enjoyed the same food and drinks, and felt that Xie Liulang belonged to her alone at this moment.

Hehe, I will deliver food every day from now on!

After enjoying the wine and food with Xie Yan, Qingluan didn't want to leave. She didn't say anything, just sat there and stared at Xie Yan. The more she looked at him, the more she felt that her husband was extraordinarily handsome.

"Why, there are flowers on my face?" Xie Yan asked with a smile.

Qingluan said: "It's more beautiful than flowers."

Is this me being teased by a woman?

Qingluan said shyly: "Before I went out today, Your Highness told me that after she becomes pregnant, I will have sex with Liu Lang. If I also become pregnant, I will officially become Liu Lang's concubine."

Xie Yan had been drinking some wine, so his body felt hot when he heard these words. He pulled Qingluan onto his lap and sat down: "Will you marry me as my concubine?"

"Yes... yes." Qingluan had never been so intimate with a man before, and his ears felt hot, so he lay down in Xie Yan's arms.

She recalled the scene of the princess and Xie Yan being intimate. By some strange coincidence, she took the man's hand and put it into her clothes.

What the princess has enjoyed, she must enjoy it again.

The taste must be wonderful, otherwise how could the princess be addicted?

I don’t know how long it took, but there was a knock on the door, and it was the assistant teacher and two male attendants who came back from dinner.

Qingluan quickly stood up and straightened his clothes with a blushing face.

When she was almost finished, Xie Yan said, "Please come in."

Three men pushed open the door and entered, completely unaware of what they had done.

"Liu Lang, I'm going back first." Qingluan lowered his head and bowed Yingying and said.

Xie Yan smiled and said: "Go."

Qingluan turned around and left as if nothing had happened. He quickened his pace after leaving the room, with a smile on his face and cheers.

It turns out that kissing tastes so good, and there are many ways to do it. I need to practice more in the future.

Alas, why is the princess not pregnant yet?
Chapter completed!