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In two years, Xu You has graduated without having a good experience of campus life.

Fortunately, in the following time, Xu You only changed his status to a doctoral student, and there were no other essential changes.

Wearing a bachelor's uniform, Xu You returned to dormitory 208.

Xu You didn't have any special ideas, he just wanted to go back to the dormitory and change out of this academic uniform.

Xu You was not interested in things like taking graduation photos.

Those who took graduation photos were all seniors.

Xu You would inevitably appear out of place here.

And when Xu You returned to the dormitory, the roommates had mixed feelings when they saw Xu You wearing a bachelor's uniform.

For the fact that Xu You was able to graduate two years earlier, the roommates must be very happy for Xu You.

At the same time, they also envied Xu You very much.

When they were still busy with their sophomore year's final exams, Xu You was about to get his undergraduate diploma.

In addition, they also knew that after this, Xu You should move out of dormitory 208 and go to the postgraduate dormitory.

"Xu You, did you come back to pack your things?"

"Pack up? Oh, yes, let me tell you some news. I have applied to the school, and I will not move out of this dormitory in the future. So even if I go to graduate school, we are still roommates."

Hearing this news, Liu Rui, Guo Haochen and Zhao Xiaohui all laughed excitedly.

"Then we can be roommates for another two years? That's great!"

Although Xu You didn't often stay in the dormitory after renting the house.

But as long as Xu You's luggage is still in 208, the feeling will be completely different.

"Hey, Xu You, did you take your graduation photo?" Liu Rui asked.

Xu You shook his head and said, "No, I don't have anything to take pictures by myself, so I can't just take selfies. This is just a ceremony, it doesn't matter."

"That can't be done, this is a very memorable moment in your life, you can't just miss it. Let's go, let's shoot with you!"

"Won't that delay your final review?"

"It's okay, it won't take a few minutes, right?"

Guo Haochen and Zhao Xiaohui also nodded in agreement.

Such a moment is indeed worth remembering.

Not to mention, taking a group photo with someone like Xu You.

"By the way, Xu You, call your female classmate too. She definitely doesn't want to miss such an important moment."

"Lu Zhiyao...then ask her."

Xu You didn't know if this would disturb Lu Zhiyao.

But if you don't tell Lu Zhiyao, it seems that you are not enough friends.

Thinking of this, Xu You sent a message to Lu Zhiyao on WeChat.

[Xu You: I have finished attending the graduation ceremony. Do you want to take a few photos together as a souvenir? 】

[Lu Zhiyao: Yes, you must be lonely after graduating alone, right? Just let the cat also be a company ω]

【Xu You: I almost forgot if you didn't tell me. I'll call you later, along with a few of my roommates]

【Lu Zhiyao: Okay, see you later】

After a while, Xu You and others came outside.

Liu Rui deliberately brought his own SLR camera, hoping to present better photos.

Xu You called Lu Zhiyao on WeChat.

Soon, Lu Zhiyao came downstairs.

"Sister-in-law is so beautiful..." Liu Rui couldn't help sighing.

Today's Lu Zhiyao looks extraordinarily beautiful, and the makeup on her face is just right.

It was also the first time that Lu Zhiyao officially appeared in front of Xu You's roommates, and she was a little shy.

"Come on, let's take a few photos of the two of you first."

With that said, Xu You and Lu Zhiyao took many photos together.

Xu You still remembers that when they were in high school, both of them had the dream of getting into Ji University.

It was a dream that sounded a little out of reach at first.

Now, it has become a reality.

Next, several people took many photos at various memorable places in Jida University.

Including the cat downstairs in Lu Zhiyao's dormitory, I also took several photos with everyone.

After returning to Heqing College, Xu You thought of the dean Jiang Hong and the tutor Sun Bingkun.

In the past two years, the dean and mentors have also provided Xu You with a lot of help.

Xu You also took group photos with them respectively.

And when the students of Heqing College knew that Xu You had graduated.

They also found Xu You one after another, wanting to take a group photo with Xu You.

Xu You had no reason to refuse.

It was okay at the beginning, and the group photos one by one can also be taken together.

Later, as the number of students increased, it was only possible for multiple people to take a group photo together.

...

After finishing my graduation work.

Xu You can finally refocus his energy on the superconductor project.

With the calculation results of batches of superconducting substances released.

More and more superconductors have been discovered.

And their superconducting critical temperature is also constantly creating new records.

From 160K, to 170K, to 180K...

These remarkable discoveries have made high-temperature superconductors less rare.

Xu You is also waiting for the first superconductor that breaks through the sublimation point of dry ice to appear.

finally.

In the fifth batch of calculations, everyone found out.

The superconducting critical temperature of a substance has reached an astonishing 200K.

"200K! It has broken through the sublimation point of dry ice!"

After more and more high-temperature superconductors were discovered.

This news is undoubtedly a more shocking news.

Although 200K is only 5K higher than 195K.

But this is a qualitative leap.

If this substance can really be prepared and put into application.

That will be the standard, and superconducting technology will enter a new era——

The age of dry ice!

Using dry ice as a refrigerant, the cost of superconductivity will be greatly reduced.

Even this cannot bring superconductivity into the lives of the masses.

But for many industries, this is definitely a technology with great value.

"The research on other superconducting materials can be suspended for now. Let's focus our current energy on the preparation of this new material."

In contrast, those previous superconductors with a superconducting critical temperature below 195K do not seem to be so important now.

After all, whether it can break through the temperature threshold of 195K, the difference is really huge.

After hearing the news, the professors in the team were also very excited and looking forward to it, and put all their energy on the preparation of this new material.

With previous experience in the preparation of these materials.

It is not so difficult for everyone to prepare new materials.

Because these medium superconducting materials are relatively similar in structure.

In the preparation project, the difficulties encountered are relatively similar.

This time, the time for the new material to be successfully prepared was even shorter than those of the previous materials.

After completing the preparation of materials, everyone came to the Ji University Condensed Matter Physics Laboratory again.