"Meow, Brother Saki, can Meow ask one last question?"

Mao Zimiao's sister Mao Zimin jumped around Wang Qi, and finally stretched out a hand and tugged at the corner of Wang Qi's clothes.

"Loved. Wang Qi looked at the book in his hand seriously, and replied without raising his head.

The little girl put her finger in her mouth and asked with some confusion: "But Meow hasn't asked Meow yet! Brother Qi, how do you know?"

"Prediction - that's why I hate children the most...... Don't ask me questions! Don't get saliva on my clothes!"

The little girl didn't care about Wang Qi's bad attitude at all. In the past few days, Mao Zimiao often went to the general altar of the Xianmeng to inquire about the war in Western Xinjiang because she was worried about her father. This kind of thing can't be done with small children. As a result, Wang Qi had to take care of the children every once in a while. After a few days of getting along, Mao Zhiya was still ignorant, but Mao Zimin was already very familiar with this big brother who was always reading some strange books.

Especially when this big brother is not reading, he is still willing to play with her.

Thinking about the words of the eldest brother, Mao Zimin quickly came to a terrific conclusion: "The problem of Meow Meow Dried Vegetables is 'What is the relationship between Brother Qi and Sister Meow', and Brother Qi said 'loved', which means ......"

Wang Qi nodded firmly: "I'm cute and bullying your sister." ”

"Meow, when I'm with Brother Qi, my sister is obviously very happy, meow......"

"Xiaomin, what are you talking nonsense, meow!" an angry Mao Zimiao rushed over and dragged her sister away. Wang Qi sighed on the spot: "What children are now...... It's complicated. ”

"Hehe, when your kid was not yet ten years old, he was more slippery than the old man. Zhen Xianzi did not hesitate to dismantle the stage.

"Hehe, you understand that you are not pure. ”

Soon, Mao Zimiao, who had finished teaching her sister, came over. The girl looked at Wang Qi with some confusion: "Xiaoqi, I am really happy that you are willing to send me...... But I'll be happier if you don't read at this time. ”

Wang Qi and the Mao siblings are now in the airport of Xinshan, waiting for a short-distance spiritual boat to northern Middle-earth.

After the end of the year, the cultivators in Xinshan also became active. The airport is full of people, and from time to time large quantities of goods are transported onto ships or written down.

A heavy snowfall of the Dragon King of the Western Sea did not affect the prosperity of the Immortal Alliance in the slightest.

Wang Qi waved his hand: "Go, go, go." Today is the fifth day of the new year, and you will be back at most sixteen. It's not life and death, it's hypocritical. And seeing that it's inconvenient for you to bring two bear children, I'm here to help, not a farewell. ”

According to the customs of Mao Zimiao's hometown, it is unlucky to take people to stay overnight before the fifth day of the Lunar New Year. This is the reason why the three of Mao Zimiao's sisters and brothers stayed in the fairy courtyard for five days.

For the cat-eared girl, Wang Qi's reaction was simply expected. She rolled her eyes and took her younger siblings on the spirit boat back home.

It wasn't until the spirit boat was about to sail out of sight that Wang Qi glanced up.

Then, he closed the book and ran towards the fairy temple with his body unfolded.

Zhen Yanzi let out a malicious mockery: "Obviously I care about it, you kid shouldn't pretend to be detached from the beginning in the first place." ”

"Phew, I'm short on time now, okay?" Wang Qi chirped, "I can't find the inspiration to build the foundation yet, and I feel a little urgent." ”

Masako sighed, "Indeed, this is a problem. ”

In the following days, Wang Qi came up with several conservative or whimsical plans, but they were satisfactory to each one.

After returning to the room, Wang Qi casually put the book in his hand on the desk. The book he had just read was his first book in the library, "Song Ting Ji".

"Sure enough, Geting is in the Copenhagen School, and he has a very deep understanding of space. After Wang Qi put down the book, he picked up another book: "This problem about surface geometry can be put aside for a while." Next, let's look at group theory. ”

Physical theories are generally divided into kinetic theory and symmetry theory, the mathematical basis of dynamic theory is mathematical physical method, and the mathematical basis of symmetry theory is group theory.

In mathematics and abstract algebra, group theory studies the algebraic structure called groups. However, geometric problems such as lattice arrangement in solid space have to be solved by group theory. The earth mathematician Klein pointed out in the "Erlangen Program", known as the general outline of geometry, that the classification of geometry can be carried out by guò infinite continuous transformation groups. The two most important achievements of geophysicist Yang Zhenning's life, the gauge field and the cosmic non-conservation that opened a new chapter in geophysics, are closely related to group theory.

If you want to master more advanced geometry knowledge, this algebraic theory must be learned. If you want to tackle the theory of great unification, group theory is even more indispensable.

The book in Wang Qi's hand now is the work of Yue Tang, another carefree monk in the Song Court of Wanfamen, "The Theory of Displacement".

This book is still regarded as a must-read in the field of group theory in the field of arithmetic in China, and it is also the eleventh book in the book list prescribed by the arithmetic master Xi Baiche for Wang Qi.

As he read better, Wang Qi began to write down a few arithmetic problems on scratch paper.

It started out as a two-way street. As time passed, Wang Qi actually wrote faster and faster. One classic arithmetic problem after another has been overcome, and one complex problem after another has been solved.

Wang Qi wrote at a jaw-dropping speed, counting. If Su Junyu looked at this scene, he would probably wonder if Wang Qi was a human being, right? Because every classic topic that Wang Qi was calculating now was far beyond the scope of the Immortal Academy's professors! Moreover, his calculation speed was no different from that of a disciple of the Ten Thousand Methods Sect who had been cultivating for many years!

But for Wang Qi, this is just a review of the mathematics he learned in his previous life.

As long as he can completely pick up the math that he has lost for ten years, then he will have the confidence to turn over any of his peers!

Revision is always easier than studying. According to Wang Qi's plan, he will complete this part of the review by the fifteenth day of the first lunar month, and write at least three summary or discussion papers.

On the fifteenth day of the first lunar month, most of the foundation building assistants returned, and after the Immortal Academy reopened, he could ask the teaching assistants or at least the teachers of the Yuan Shen period about building the foundation.

Graduation is only six months away. I may not be able to come into contact with so many geniuses and grandmasters of different fields at the same time. So in these six months, I must put on the best Faji for me!