Ji Chen didn't expect Zhang Hong to solve this problem so quickly.

"Boy, the answer is indeed 25 and 75, and I have to admit that you do have some talent for arithmetic. Ji Chen smiled at Zhang Hong, and said: "However, you have some talent, you still can't be proud, arithmetic is still very profound." Ji Chen said.

"Tutor Ji Chen, in terms of arithmetic, I really have to be proud, in fact, the two questions you came up just now are not difficult. Zhang Hong looked at Ji Chen and smiled.

"Boy, it's not good to talk wildly. When Ji Chen heard this, he was stunned and said.

"I really didn't say anything. Zhang Hong said.

"Well, I still have a problem here, if you can solve it, I will really convince you. Ji Chen said.

"Then Tutor Jichen, please ask the question. Zhang Hong nodded and said.

Ji Chen thought for a while, and suddenly said: "The bamboo plain is eight feet high, and the end is folded to the ground, and the bamboo is six feet high, how tall is the bamboo?"

After Ji Chen finished this question, he stroked his beard, and secretly thought in his heart: This question, but it was given to me by my master back then, and I spent three years discussing with all the arithmetic talents, and finally found some rules, which was solved, if you can calculate it, even if you have the ability.

Hearing this question, everyone in the audience was also confused.

It seems that this question is beyond the scope of human comprehension at all.

Zhang Hong looked at the question and began to examine the question: the meaning of this question is that a bamboo that has been erected is one foot eight feet long, broken from the middle, and the end hits the ground, and the distance between the end and the root of the bamboo is six feet, and asks how tall the bamboo is.

Zhang Hong reviewed the question, but shook his head.

Zhang Hong's thoughts: The bamboo is broken, the end hits the ground, and it forms a right triangle with the ground, so to speak, this problem is a Pythagorean understanding of the equation.

Zhang Hong smiled again: The two questions just now are a one-dimensional equation and a two-dimensional equation, and now this problem is actually a Pythagorean theorem equation.

Zhang Hong's mental arithmetic: according to the Pythagorean theorem, let the existing height of the bamboo be X, and the equation is: X²+6²=(18-X)², and the final result is X=8.

Seeing that Zhang Hong didn't squeak for a while, Ji Chen smiled.

"Boy, arithmetic is still very profound, hehe! So, it's normal that you can't answer this question, after all, it took me three years to solve this problem. Ji Chen smiled at Zhang Hong, got off the stage, came to Zhang Hong, patted Zhang Hong's shoulder, and said: "Boy, you can solve the first two questions, it's already very good, the old man is still very optimistic about you." ”

"Tutor Ji Chen, actually, I already have an answer to this question. Zhang Hong said.

"What, you have an answer?" Ji Chen was stunned when he heard this.

The answer should be 8 feet. Zhang Hong said.

As soon as Zhang Hong said this, the people in the audience were also stunned.

The people in the audience naturally didn't know whether Zhang Hong's answer was true or false, after all, they didn't know anything about the Pythagorean theorem, and they didn't know how to calculate it.

Only Ji Chen heard what Zhang Hong said, and he was surprised.

"You kid actually figured out the answer. Ji Chen was surprised.

"My answer should be right!" Zhang Hong said.

"That's right, it's 8 feet. Ji Chen was stunned, and suddenly looked at Zhang Hong like a monster: "Genius! ”

"Isn't this just a simple Pythagorean understanding equation?" Zhang Hongchao smiled at Ji Chen and said.

"Pythagorean theorem, solve the equation?" Ji Chen was puzzled for a while, and he didn't know what Zhang Hong was talking about.

"If I have time, Tutor Ji Chen and I can discuss this Pythagorean understanding equation. Zhang Hong said.

Ji Chen looked at Zhang Hong in shock, and said again: "The way of the formation, the difference is a millimeter, and the error is thousands of miles, therefore, arithmetic is the most basic thing in the formation, a high-grade formation often has extremely high accuracy, the kid has a talent in arithmetic, he must be a future formation wizard!"

Zhang Hong was full of doubts about Ji Chen's words, after all, Zhang Hong had no knowledge of the way of formation.

The students from all over the world also smacked their tongues, after all, Zhang Hong easily calculated the arithmetic problem, and was praised by Ji Chen.

At this time, the system also came with a message.

"The owner is complimented, Charm +3, Charm 107 points!"

"The owner is praised, the charm value is +2, and the accumulated charm value is 109 points!"

“.......”

"The owner is complimented, charisma +3, cumulative charisma 183!"

This time, the increase in the charm value surprised Zhang Hong, and it suddenly increased by 79 points, and now Zhang Hong's charm value has increased by 183 points.

Ji Chen praised Zhang Hong for a while, and Zhang Hong was also proud.

When the children of the Quartet saw such a strange thing as Zhang Hong, they also showed a look of surprise.

For the arithmetic of this world, Zhang Hong himself did not expect that it would have something to do with the equations he learned in his previous life.

Ji Chen solved three problems in a row, and Ji Chen didn't continue to ask.

In the following time, Ji Chen began to continue to explain the problems in arithmetic, as well as some methods and ideas for solving problems.

Zhang Hong found that the arithmetic in this world is only the level of elementary school students solving equations, and Zhang Hong has nothing to learn.

Zhang Hong thought for a while: If this is the case, then now it seems that he can get full marks for at least two of the five homework.

Zhang Hong thought for a while: just now, the charm value soared, and it had reached 183 points, and now, he could already purchase the three true solutions.

As soon as Zhang Hong's mind moved, the system mall appeared in Zhang Hong's mind.

The [Cosmic Medicinal Materials True Solution], the [Cosmic Mineral True Solution], and the [Cosmic Rhythm True Solution] were immediately presented.

Zhang Hong didn't hesitate too much, even if he spent 180 charm points, he purchased three true solutions such as [Cosmic Medicinal Material True Solution], [Cosmic Mineral True Solution] and [Cosmic Rhythm True Solution].

If he can learn the [Cosmic Medicinal Material True Solution] and the [Cosmic Mineral True Solution], Zhang Hong will be able to quickly control the knowledge of medicinal materials and minerals in this world.

If he can learn the [Cosmic Rhythm True Understanding], Zhang Hong will be able to easily control beasts in the future.

At the same time, Zhang Hong will also unlock three deputy positions, such as Alchemist, Alchemist, and Beast Master.

Soon, two voices came from the system.

"[Cosmic Medicinal Herb True Solution] is being studied. ”

"[The True Solution of Cosmic Minerals] is being studied. ”

"[The True Understanding of Cosmic Rhythm] is being learned. ”

After about a few moments, two voices were heard from the system again.

"The [Cosmic Medicinal Material True Solution] has been studied, the deputy alchemist has been unlocked, and the master can start alchemy cultivation. ”

"The [Cosmic Mineral True Solution] has been studied, the sub-refiner has been unlocked, and the master can start refining the cultivation. ”

"The [Cosmic Rhythm True Solution] has been learned, the deputy beast master has been unlocked, and the master can start the beast master cultivation. ”

Smelling the three deputy positions of alchemy, refining, and royal beast unlocked, Zhang Hong's mind presented three panels.

One is the panel for the growth of the alchemist realm.

One is the panel for the growth of the refiner realm.

One is the panel for the growth of the Beast Master realm.

Alchemists, refiners, and beast masters all have a process of growth.

Zhang Hong also vaguely felt that his mind was full of information about medicines, minerals, and music.

If anyone wants to ask Zhang Hong about the knowledge of medicinal materials, minerals, and music, Zhang Hong will definitely be able to answer easily.

Zhang Hong calculated, if it seems like this, in the assessment after half a year, he will get five perfect scores, there is absolutely no problem.

If you get five perfect points, then wouldn't you want to fly up the branches and become a phoenix and become the son-in-law of the Ji family.

Thinking of these, Zhang Hong couldn't help but feel a little excited.