Liu Yun'er's mind went blank, and she stared blankly at the idiot in front of her. For a moment, she didn't know what to do at all. Although it was not uncommon for her to have her mouth wiped, the next action happened for the first time.

So sweet?

What sweetness does he mean by sweetness?

Is the sesame filling of glutinous rice balls sweet? Or...

When she thought of this, Liu Yun'er's face became even redder and even a little hot.

"Hello?"

"You...how sweet are you talking about?" Liu Yun'er turned her head quickly, not daring to look directly into Lin Fan's eyes, and asked with a hint of shyness in her words.

"Everywhere is sweet!" Lin Fan said with a smile.

Suddenly,

His face became even hotter.

She tried hard to restore herself to calmness, but unfortunately... Liu Yun'er's efforts were in vain. Her heart was beating like a little chaos, bang bang bang, and for a while... she gradually lost consciousness.

All that's left is a strong sense of happiness.

"rogue!"

"You know how to take advantage of me every day." Liu Yun'er pursed her lips and said angrily.

Lin Fan said matter-of-factly: "It used to be called cheating, but now it's called...flirting. It's completely different in nature. In the past, the maximum sentence was fifteen days, but now...it's upright!"

After hearing Lin Fan’s words,

Liu Yun'er was so angry that she vomited blood. It seemed that after becoming his girlfriend, he found a reason to take advantage of her.

"Hello!"

"Girlfriends are for love, not for taking advantage of you." Liu Yun'er rolled her eyes and said angrily.

"I think..."

"The two coexist." Lin Fan said with a smile.

"You are a big-headed devil!" Liu Yun'er's pretty face turned red and she glared at Lin Fan fiercely. Then she picked up her bag and walked to the door. When she first arrived at the door, she looked back at Lin Fan.

, said: "Oh...big idiot!"

"Well?"

"What's wrong?" Lin Fan was clearing away the dishes when he heard the big goblin calling him and looked at him curiously.

"..."

Liu Yun'er pursed her lips and said seriously: "It's nothing... I just want to call you."

The words fell,

After hesitating for a moment, he said: "Good night."

open the door,

Leave.

Looking at Liu Yun'er's leaving figure, Lin Fan looked confused. What's going on with this woman...?

...

The next day,

Liu Yuner finished the breakfast cooked by Lin Fan in room 304.

"Do you have a class today?" Lin Fan helped Liu Yun'er hold the porridge and asked curiously: "I saw this brat Liang Xuchao sighing in the circle of friends... Did you mess with them yesterday?

Crap?"

"Um..."

"There were classes yesterday, and there are classes today." Liu Yun'er said expressionlessly: "But yesterday was quite busy, so today is okay. There are classes in the morning, but not in the afternoon... But I have to make plans for the afternoon.

, this class...will bring several PhDs and masters, as well as several postdocs."

Lin Fan nodded and said cowardly: "It's a pity...I can't do anything, otherwise I would be happy to help you share the burden."

Hearing these words, Liu Yun'er was almost angry to death. He was obviously much better than her, but he ended up being lazy and playing games all day long. He didn't dare to do anything serious. He even licked his face and reached out to ask for pocket money. How did he do it?

To be so shameless?

"well?"

"Today's pocket money!" Lin Fan said: "One hundred and seventy-five yuan."

"..."

"Why is there an extra seventy-five yuan?" Liu Yun'er frowned and asked seriously: "You must explain the extra part to me clearly, otherwise I will not pay you."

"Game time is coming soon, I want to buy a monthly pass." Lin Fan said seriously.

"..."

Liu Yun'er's head suddenly got big. She could write a book about her experience... the title of the book is "My Best Boyfriend".

finally,

Under bargaining,

Liu Yun'er gave Lin Fan one hundred and fifty yuan of pocket money.

When she arrived at her office, Liu Yun'er was a little exhausted...but this state did not last long, and she immediately got into work mode.

for a long time,

a certain classroom,

Liang Xuchao and his classmates are nervously waiting for Professor Liu's arrival. Although Professor Liu's class is one lesson less than the previous one,... everyone hopes not to take her class. Her class is different from other classes.

The professors and tutors are different, they are too oppressive.

moment,

Liu Yun'er came to the classroom with the textbook in hand without any expression on her face. She didn't call anyone by name...she just opened the book and started teaching.

In fact, Liu Yun'er quite expected students to send her emails to ask some physics questions in their spare time. Unfortunately...she had been at Shenzhen University for a long time, and she had never met such a student so far.

"Given the wave function of a one-dimensional moving particle, perform relevant calculations."

"For the described state, based on what I wrote, the normalization constant, the probability distribution function of the particle coordinates and the probability distribution function of the momentum are obtained. At the same time, the expected value of the coordinate square and the expected value of the momentum square are obtained."

"First normalize the wave function, and the conditions for this normalization are..."

Liu Yun'er took a piece of chalk and wrote a certain physical condition on the blackboard. At this moment... the students were taking notes seriously, not showing any signs of desertion.

"Let's start to find the probability distribution function of the particle coordinates."

The words fell,

Then write the following content.

At this time,

The sharp-eyed students discovered a question and the answer given by Professor Liu was different from the standard answer given later.

"Professor Liu?"

"The standard answer seems to ask us to... ask first..." Before the student could finish speaking, he was interrupted by Liu Yun'er.

"Then the answer is wrong!"

Liu Yun'er said calmly: "In my class... no one is allowed to speak without my permission."

"..."

"..."

"..."

A group of students are helpless...can all their answers be wrong?

Some students took a look at the list of textbooks. They were all three professors from Peking University. It seemed that Professor Liu was more authoritative than these three professors.

morning time,

Liu Yun'er spent time in lectures and ate in the teachers' canteen at noon. However, after eating the food cooked by Lin Fan, Liu Yun'er felt a little unable to swallow the school food. It was not that it was not delicious, but it was not as good as Lin Fan's.

tasty.

now,

Liu Yun'er was eating lunch and sending WeChat messages to Lin Fan.

Cloud: The school food is not delicious.

Wodetian Niwesenmo Ramoshuai: What else do you want if it’s free?

Liu Yun'er frowned and hurriedly sent a message.

Yun: Idiot!
To be continued...