Can you live forever

Chapter 21 The pinnacle of external arithmetic, the four yuan jade mirror

"Can the Taoist priest solve the evil this time?"

After Wang Yuanzhi confirmed the signs of the "Great Heat", he seriously asked about the matter in front of him. This matter was related to him. If the scrolls of the ancient gods were really used by Xu family in this year's battle to seize the island, it would be a big trouble.

Losing a year's share is a small matter, but casualties are a major matter.

In other words, the majestic casualties were even greater. Just imagine, if the Wang family's two thousand elite soldiers in Poyang Lake were wiped out, even if the Wang family had more than one leg, what would outsiders think?
The greedy siege that will be triggered at that time will be the real big loss.

Wang Yuanzhi couldn't help not paying attention to this matter.

"I have never been in contact with such overseas evil cults before, so I dare not boast, but killing demons and demons is the responsibility of my Tianshi Mansion, and I will do my best!" Zhang Yonghuan expressed his position, and Wang Yuanzhi naturally thought that this matter should be resolved before continuing to go north .

He ordered the housekeeper to mobilize the members of the Cangming gang to investigate the matter with all their strength.

As soon as there is information, report it immediately.

"The people below have already gone to do it. The Taoist priest hasn't eaten yet. I'll let the kitchen prepare it. Let's talk about it after eating." Wang Yuanzhi unexpectedly noticed that the incident happened in a restaurant, and the meal might not be finished.

After arranging dinner and asking his daughter to accompany Zhang Yonghuan, Wang Yuanzhi went out to do errands.

The appearance of the ancient god's relics made Wang Yuanzhi realize that the times are really different. He may have to make other preparations for the battle to seize the island in April, and he has to do many things himself.

When Zhang Zhixiang was eating, he was still immersed in the incident just now.

I wanted to talk to Yushui, but felt that it was too scary to tell girls, especially Wang Jiangque.

He glanced over there, and the girl said: "Father said it's safest to follow Mr. Yonghuan, I didn't look at you, and you don't have to pay attention to me."

Sitting in a corner, the little girl was holding a volume of "Treasure Book of Mathematical Sciences" in her hand.

"Oh."

Zhang Zhixiang responded, but he didn't say anything, Yushui was quite timid...

By the way, after dinner, it's time to practice martial arts, right?

His rhythm of life should be reading or practicing martial arts, but the old master said that he reads too much on weekdays, and he is not allowed to take books when going out, so he only has to practice martial arts. He had an embarrassment on the boat before, so he should not be in front of her practiced martial arts...

Or, borrow a book to read?

"Well, are you looking at the treasure book of arithmetic?"

He opened his mouth to ask, when he was learning Taoism from the old celestial master earlier, his senior brother mentioned this book when he talked about external calculations.

"Xinji Token Ancient and Modern Mathematics Treasures", the author is Shanxi Wang Wensu, who was born in Shanxi merchants. The first draft was circulated in the eighth year of Zhengde, and the final draft was published in the third year of Jiajing."

"The book consists of 12 volumes, 42 volumes, and 50 words."

"This book focuses on the courage of the 'New Collection' and the perseverance of the 'Certificate'. It pays attention to all the works of mathematics that can be seen in the world, so as to achieve the effect of eliminating the false and keeping the truth, and eliminating the chaff and the essence."

"It is a great work of mathematics that can be rectified."

"But that's all. Compared with the height of mathematics in Song and Yuan Dynasties, Wang Wensu's knowledge is limited. He knows very little about Tianyuanshu and Siyuanshu, and he has not deduced it forward."

"Summarize."

"This is a well-established book, but it is a pity that there is no pioneering action."

Wang Jiangque directly finished all the relevant content of the Baojian of Mathematics, and she was still turning the pages when she answered, which did not affect her reading at all.

After Zhang Zhixiang was taught, he was a little amazed.

He doesn't know much about ancient mathematics. Wang Jiangque's evaluation is different from the old Tianshi's, but the old Tianshi probably hasn't read this book, and Wang Jiangque is reading it, so her evaluation is more accurate.

Interested in learning about this aspect of knowledge, he continued to inquire.

"Then, what is the most accomplished work in mathematics at present?"

"The "Four Elements Jade Mirror"."

Wang Jiangque said: "Zhu Shijie's "Siyuan Yujian" in the Yuan Dynasty is the highest peak in the field of mathematics at present. In the "quaternary technique (quaternary high-degree polynomial equation)" and "stacking technique (high-order arithmetic sequence calculation) and)' and 'recruitment technique (high-order interpolation method)', so far no one can match it."

Zhang Zhixiang doesn't understand these professional terms, but he can tell that Zhu Shijie in the Yuan Dynasty was the most powerful, and no one has surpassed him since the Ming Dynasty.

If what he expected was correct, the quaternion technique should be a quaternary high-degree polynomial equation, then his little bit of mathematics would be of no use in Daming at all.

In fact, all travelers, as long as they are not mathematics majors, the little mathematics they learned should be useless when they travel to ancient times...

You will, it is written in ancient books.

You won't, too.

"Well, do you know these things? For example, the quaternary technique." Zhang Zhixiang was a little curious, after all, Wang Jiangque's comments seemed to have read "The Precious Book of Mathematical Sciences" thoroughly.She seems to be only seven years old, right?Such a monster?Anyway, he himself doesn't know how to do it. After finishing high school courses in his previous life, he read only miscellaneous books, and he was not proficient in mathematics.

"meeting."

Wang Jiangque's answer was very short, but full of domineering, full of domineering demeanor, in comparison, he is like a scumbag... Facts have proved that it is not like a genius in history who has traveled once. .

"You...what else?"

This girl who is very intelligent and close to a demon made him a lot of curious.

Wang Jiangque stopped reading, glanced back at Zhang Zhixiang, and said, "Do you only ask people?"

Zhang Zhixiang: ...

After being stunned, after the silence, Zhang Zhixiang sorted out his mood, sat upright, and said, "Then you can ask me."

"Do not ask."

"..."

He understood, he disturbed others from reading.

Ah, I haven't borrowed the book yet...

With a deep sigh in his heart, he glanced outside the door, the fourth uncle took a piece of pancake and went out to draw amulets, but there was no sign of returning, forget it, let's go to the yard to find Da Fangfeng to discuss martial arts.

"Big Fangfeng, big...Fangfeng?"

After crossing the threshold and coming to the yard, he didn't see Da Fangfeng's person, such a giant, he couldn't be found, did it mean that Da Fangfeng went out?
Even if he goes out, he should be notified, right?

Although Da Fangfeng is a giant, he is a very careful person, and he will not leave without saying goodbye at such a time...

Oops!

Zhang Zhixiang woke up suddenly, he turned around abruptly, but in front of him was not the door, but a fog!The whole yard was covered with mist at some point, which made people feel a little panicked!

calm……

I only took five steps when I went out, now I can go back to the room by walking five steps forward, at least find Yushui and Wang Jiangque first, and protect them.

one two three four five six seven……

I have already walked seven steps, and the fog in front of me seems to never end.

But at this moment, someone is calling from behind...

　Thanks to "This is Yueshang" for the 100 starting point reward.

　　
　
(End of this chapter)