I really don't want to lie down and win

"It's a school...everyone drowned me with a mouthful of spit." Xu Mang turned his head and kissed Xiaoman's cheek, then took a sniff, his face became a little dignified, and he said, "Change your perfume? "

"Yup!"

"It's quite expensive...and limited edition." Yang Xiaoman said, "How is it?"

Xu Mang felt that this perfume matched Xiaoman quite well. It had a faint fragrance that matched her overall temperament very well, but...letting Xiaoman go like this was obviously not his personality, so Xu Mang decided to play it safe. .

"Uh..."

"Perfume is good, but people are not good." Xu Mang frowned and said seriously.

words fell,

Xu Mang felt a little cold, and the surrounding air condensed.

Yang Xiaoman: ￣︿￣

What do you mean?

It's been too long to feel disgusted with my old lady?

"Hey!"

"Do you want to die?" Yang Xiaoman gritted his teeth and said, "Don't think I dare not beat you up, even if you are a great scientist, you should obey me obediently at home. Where is your name and handprint!"

Lying trough,

It's still there?

Xu Mang shrank his head, and said cautiously: "Don't talk nonsense...I don't know what the Xu-Yang Treaty is at all."

however,

Next second,

Yang Xiaoman took out a copy of paper from his bag, it was really a copy of Xu Yang's treaty.

"Humph!"

"Don't cook for me yet!"

Seeing that Xu Mang was being honest, Yang Xiaoman raised his proud little head and said, "Today I want to eat... okra with scallion oil."

"Oh..."

for a long time,

The two sat at the dining table, looking at each other. Three dishes and one soup are the international convention. Although Xiaoman's appetite is small, Xu Mang's appetite is very large, and he almost never brings any leftovers. Xiaoman asked about the adhesive.

"Honey..."

"The raw materials of the adhesive are too expensive. Do you know how much it costs each time I make a bottle of concentrated puree?" Yang Xiaoman said helplessly: "A BMW [-] Series is gone."

"normal."

"You don't want to think about how many adhesives you can make from a bottle of concentrated puree...a BMW [-] Series for a villa, what else do you want?" Xu Mang smiled wryly, "You can earn some money for others, too. The money has been earned by us, and others will gossip about it.”

"Ok."

"By the way... I plan to invest 1000 million in your student aid foundation." Yang Xiaoman said: "Buy a reputation."

"what ever."

Xu Mang seldom asked about this kind of thing. Anyway, 1000 million was nothing to Xiaoman. This female capitalist is now a fucking rich thief. While doing financial harvesting, she used adhesives to make money.

Anyway,

There are various routines.

...

The next day,

Xiaoman went to the company, while Xu Mang stayed at home thinking about fragile topology.

in mathematics,

Xu Mang failed and couldn't find any useful information at all. After that, he changed his thinking direction, thinking about the problem from the perspective of quantum state, and used the most important discovery in condensed matter physics, the quantum Hall effect, to get to the root of the problem.

The quantum Hall effect is found in two-dimensional conductive materials, but the similar effect in three-dimensional systems is called topological insulation, and the outer conductor is insulated from the inside.

This is a strong topology.

"Strong Topology..."

Xu Mang suddenly fell into memory. It seemed that the strong topological properties came from some weird properties of the electronic quantum state. What was it?

Oh!

Electrons are not completely surrounded by individual atoms, but some of them are delocalized.

"Ugh?"

"What will happen if... some materials have partially delocalized electrons but do not have strong topological properties?" Xu Mang came up with a point of view. He didn't know the research results of Oxford University for the time being, but he didn't hinder the proposal. a new concept.

After calculating,

Xu Mang felt that this idea was quite reliable. Although it didn't work, he had a brand new way of thinking.

In Xu Mang's theory, the electronic state can ignore small disturbances, but it is not as robust as the strong topological state. A slight change in the material structure, such as adding a little impurity, can become an ordinary material.

but...

It's useless, it's just fun.

"You have a new lawyer's letter, please check it!"

The phone rang.

It was Teacher Jiang Dateng calling.

"Hey?"

"Teacher Teng...what do you want from me?" Xu Mang asked with a smile.

"I knew you must have forgotten, so I asked you to produce the Zhejiang Provincial College Entrance Examination Paper." Teacher Teng said with a smile: "It is said above... I hope you can produce the Zhejiang Provincial Mathematics and Comprehensive Science Papers this year. The difficulty is... .you figure it out."

"what?"