"No, no, you wait for me to calm down." Li Jing tried to regain her senses, "You came here to send us this purpose?" ”

"That's right." Su Qingyun smiled lightly, "You are my friends, I am married, naturally you will be present." ”

The three of them were stunned, but they didn't expect that Su Qingyun had been thinking about them all the time, and they had come to send wedding invitations, thinking like this, they were suddenly moved.

But......

"In other words, you graduated several steps ahead of us before, and now you're going to get married a few steps ahead of us, right?" Li Jing looked sad, "At your speed, we can't catch up." ”

Yao Anan and Fei Shulan nodded in agreement.

Su Qingyun was a little amused, "What's wrong with this that you can't catch up?" Everyone has their own pace, just go their own way. ”

"To be honest, I didn't think I would get married now, that is, sometimes I felt that the time had come, so I would do it naturally."

"Anyway, I delivered the invitation, and you all have to come."

Li Jing nodded firmly, "Come, definitely come." ”

"Whether it's windy or rainy, I'll come, and I'll come when it's hailing!"

"Me too."

The three of them responded positively, joking, in Huaqing, the legend of Su Qingyun is still circulating today, and her terrifying achievements have not been surpassed so far, and as the legendary Su Qingyun's former roommates, they now have the opportunity to attend her wedding and witness her happiness, this kind of rare honor in the school, they will go no matter what.

"That's good." Su Qingyun nodded with satisfaction, and then didn't forget to advise, "Just come here, don't bring anything." ”

She invited the three of them to be lively and festive, not to let them follow them.

"Yes, yes."

Although the three of them responded like this, they had already begun to think about what wedding gift to give her.

After chatting for a while, Su Qingyun was ready to leave.

"I have to go, I have to go and deliver invitations to others, you guys are busy first, and I'll see you then."

"Okay."

The three girls reluctantly sent Su Qingyun away.

Su Qingyun walked out of the dormitory building, thought about it, and walked towards Zhang Huaizhi's office.

Outside the principal's office, she knocked on the door for a moment, but no one opened.

"Su ...... Qingyun? A male voice rang out behind her.

Su Qingyun turned around and saw a familiar face, it was Zhang Huaizhi's assistant Xiao Wei.

"When are you going back to school? Looking for a principal? Xiao Wei was a little surprised, the principal was still talking about this a few days ago, but he didn't expect to see a real person today.

"Yes, I'm looking for Mr. Zhang."

"The principal is teaching the students right now."

"Class?" Su Qingyun was a little puzzled.

Principal Zhang was not in charge of teaching before, but now why is he also teaching?

"Yes." Xiao Wei said, "Isn't this the case that more students have been recruited in recent years?" There are also a lot of new majors, and the faculty can't keep up for a while, so the principal personally goes to the top, and now he is also responsible for some teaching content, and he has several classes a week. ”

"I see." Su Qingyun was stunned.

After asking Zhang Huaizhi about the specific location of the class now, Su Qingyun left.

The third teaching building of Huaqing University, a classroom on the second floor.

Zhang Huaizhi stood on the podium, and his steady and gentle voice was speaking, and the course he taught was a professional course for physics majors, atomic physics.

The slightly boring knowledge in the books came out of his mouth, which was quite interesting, and he used his own way to make it easier for students to understand, mixed with some interesting stories about physicists, and the whole classroom laughed.

Just when everyone was fascinated, the back door of the classroom was slowly pushed open, and a figure slipped in quietly, almost without alerting anyone, and sat in the last row of the classroom.

Su Qingyun glanced at the textbook of the person next to him and understood what this lesson was about.

"You're very bold, you didn't come until class ended, this is Mr. Zhang's class, don't you dare to come?" The boy next to her looked at her with admiration.

"It's okay, he won't blame me." Su Qingyun said deliberately.

"Yo, it's not a small tone." The boy didn't think so, he just thought she was bragging, "What class are you from, why don't I seem to have seen you?" ”

This class was attended by several classes of the physics major, and the boys looked at her and felt disgusted.

"I'm not a major." Su Qingyun said calmly.

"It's no wonder you're here to listen." The boy suddenly realized, "But, can you understand?" If you don't understand, I can tell you about it. ”

This person is quite enthusiastic, Su Qingyun couldn't help laughing, "It should be possible." ”

Can a major from another major understand their physics major? The boy is silent, this girl is really good at blowing.

"Regarding the spectral nature of atomic transitions, in addition to what has been learned, are there any students who can derive some ideas and opinions?" On the podium, Zhang Huaizhi asked everyone.

All the students looked left and right, and no one raised their hand to answer.

"Then I'll find a classmate to get up and answer." Zhang Huaizhi had a smile on his face, his eyes roamed among the students, and when he landed in the last row, his eyes widened, a little incredible.

"That girl, the one in the last row, please get up and answer this question." Zhang Huaizhi nodded at Su Qingyun.

Everyone looked back to see who the lucky one was.

The boy looked at Su Qingyun with some sympathy, "Your luck is also miserable, you were named as soon as you came." ”

"Mr. Zhang, this student is not a student majoring in physics, he is from a foreign department, and it is estimated that it is a little difficult to answer this question." Before Su Qingyun could stand up, the boy kindly helped to say a word.

"It's fine." Zhang Huaizhi's smile was meaningful, "I believe that this classmate, since he dares to come to the class, he will definitely have his own ideas, but it doesn't hurt to say it." ”

Su Qingyun stood up, with a clear smile and a clear voice.

"On the question of the spectrality of atomic transitions, my opinion is ......"

Her voice was not hurried, and everyone could hear every word clearly, but when they were connected, everyone began to hear it in a fog, was what she said really the same question as they understood?

The boy's mouth next to Su Qingyun opened wider and wider, although he couldn't fully understand it, but he could understand Mr. Zhang's expression, that satisfied smile, and nodded from time to time, knowing that this girl was really good.

This foreign system is so powerful? Wasn't she bragging?

"Very well answered." After Su Qingyun finished speaking, Zhang Huaizhi couldn't hide the satisfied smile on his face, and he said to the other students, "You can record what she just said, maybe you don't understand it now, but you may understand it later." ”

Later? Possible? These two words hit the students so hard that their faces were numb, and they looked at Su Qingyun's eyes in disbelief.

Which department is this girl from? I'm here to smash the field.