On the way, Yang Jian asked Xu Hezi softly if he wanted to go to school today.

Xu Hezi shook his head desperately.

He kept signaling Yang Jian with his eyes, so as not to let the grandfather behind him hear it.

Yang Jian looked at Xu Hezi's eyes, and knew in his heart that this guy was trying to take the opportunity to skip school again, but think about it, children at this age are also normal, the school is so boring, what's the point, and he can see that Xu Hezi is not reading material, compared to reading, he thinks Xu Hezi may be more talented in singing.

However, what made Yang Jian almost burst out of laughter was that just when their grandfather and grandson were about to walk to the door of the house, they saw a person standing at the door of the house.

As soon as Xu Hezi saw it, his scalp was numb, and one became two big.

"Mr. Huang, you're early!"

It was still grandfather Xu Geng who was more alert, and when he saw the gentleman in the school, he hurriedly greeted him warmly.

"Old man Xu, you are early, where did you go today?"

Huang Xinghe looked at Xu Hezi and Yang Jian from far and near, with a smile on his face, and his attitude was similar to the appearance of Yang Jian when he first saw him.

"That's the case, sir, last night Hezi suddenly vomited and diarrhea, Yang Jian and I sent Hezi to the doctor in Chang'an City overnight, no, I only came back at this time today, and I didn't have time to go to the school, I hope Mr. don't blame!"

Xu Geng looked at Huang Xinghe and explained in a row.

Kazuko's book is not good, Mr. has told him more than once, but, he can't help it, he needs to be taught by Mr. to study, otherwise why would he send Kazuko to the school.

"Yes, sir, my grandfather said I don't have to go to school today, my body is still very weak."

Xu Hezi looked at Huang Xinghe, like a mouse seeing a cat, and he couldn't hide from it, so he lied.

"Well, it's okay, you're recuperating at home today, and Mr. is not here today to look for you."

Huang Xinghe did not hide his intentions.

"Sir, you're not here to find Kazuko, are you looking for my old man?"

Xu Geng muttered in his heart, Hezi has just paid this month's tuition, has Mr. forgotten it, and asked for a second time?

"Of course not, old man, I'm here to find your grandson, Yang Jian."

Huang Xinghe looked at Yang Jian behind Xu Geng, with an excited look on his face.

"Sir, are you looking for me?"

As soon as Yang Jian heard this, he probably knew what was going on.

"Yes, come, come with me over here."

Huang Xinghe looked at Xu Geng, nodded slightly with him, and motioned for Yang Jian to go a little farther away with him, they had separate words to talk about.

"Okay."

Yang Jian looked at Huang Xinghe, and couldn't imagine that this gentleman was still very cautious.

However, seeing that he took the initiative to come to him so early today, do they already have the answer to his question?

"What's going on this year, why is everyone looking for Yang Jian's doll?"

Xu Geng watched Yang Jian and Huang Xinghe walk away, and muttered in his mouth.

"Sir, do you have an answer to that question?"

Yang Jian remembered the question of calculating interest and principal that he gave Huang Xinghe last time.

"Nope."

When he reached a secluded place a little farther away, Huang Xinghe stopped.

"None? What is the matter with me that gentleman? ”

Yang Jian frowned and asked.

"That's right, I came today to ask my brother for the solution to this problem, and by the way, Xinghe also has a question in his hand, and I want to share it with my brother."

Huang Xinghe directly explained his intention.

"Sir, is this an admission that you lost?"

As soon as Yang Jian heard this, a dazzling light instantly bloomed on her little face.

Unexpectedly, I, the mathematical scum of college calculus, abused these ancient scholars, and they were really abused and had no power to fight back!

"Yes, little brother."

Huang Xinghe has been by the doctor's side for a few days, and he has once again been infected with the charm of modesty, his husband is so knowledgeable, and he can humbly admit his own shortcomings, how can he be proud?

"Well, for the sake of your humility and politeness, I'll teach you well!"

As soon as Yang Jian was happy, he squatted on the ground, broke a dead branch directly from the grass on the side of the road, and drew it on the snow.

"It's that simple?"

When Yang Jian finished his calculations, Huang Xinghe's eyes widened, but he couldn't believe it, such a complicated problem, the little doll in front of him was solved by dividing it by two?

Isn't that incredible?

"Of course, sir, do you find this difficult?"

Yang Jian blinked with a pair of big eyes that killed people and asked knowingly.

"Okay, it's really simple, but Huang really didn't think of answering it like this."

Huang Xinghe is now convinced.

"Okay, didn't Mr. just say that he also brought a question to Yang Jian?"

Yang Jian looked at Huang Xinghe, and was also very curious about the topic of this mathematical scumbag.

was abused like this by himself, and he dared to come to the door with a question to provoke?

"Well, give me, you can see, just tell me the answer tomorrow morning."

Huang Xinghe took out a piece of paper from his arms and handed it to Yang Jian.

"Wait, sir—"

Yang Jian stretched out his hand to take the straw paper handed over by Huang Xinghe, and he saw a question.

A crepe title.

"Today, there is a pond square zhang, the center of the Jiasheng, out of the water a foot, leading the Jiajia to the shore, suitable for the shore, asking the depth of the water and the length of the geometry?"

Seeing this question, Yang Jian almost burst out laughing.

This is an ancient geometry problem, if he is not mistaken, it should come from an ancient arithmetic classic, when the teacher explained the right triangle problem in the second year of junior high school, he also specifically quoted this ancient interesting arithmetic problem to enliven the classroom atmosphere, I didn't expect to go through the millennium, but I encountered it again.

This topic is actually very simple, as long as you understand the meaning of the question and the solution, it is not too pediatric.

"What's wrong, little brother?"

Huang Xinghe was about to get up and leave, but was immediately stopped by Yang Jian.

"I'll tell you the answer now, sir, without waiting until tomorrow morning."

Yang Jian looked at Huang Xinghe and grinned.

"Now?"

Huang Xinghe was once again suppressed by Yang Jian.

"Yes, sir, the water is 12 feet deep and the leaf is 13 feet long. Am I right, sir? ”

Yang Jian almost wanted to laugh out loud.

The ancients were so cute.

Such a simple question, but they moved it out so ceremoniously, testing him, a college student from a thousand years later.

"Yes, yes—"

Huang Xinghe's face was red and white for a while, and in the end it simply became a blank piece of paper.

"Don't be rude, sir, I also have a question for sir, if you can have an answer now, tell me now, if not, when I send my sister to the school tomorrow morning, sir can tell me again."

Yang Jian looked at Huang Xinghe, whose face was as pale as paper as shocked by himself, but his heart was as excited as a sadist.

"Do you still have a topic?"

Huang Xinghe took a deep breath, and then asked.

"Yes, sir, you wait. I don't have a pen or paper right now, so I'll just write it on the ground, and now I'll memorize it and take it back to solve it. ”

After Yang Jian finished speaking, he continued to take the broken branch and wrote on the ground.

As he wrote, Huang Xinghe's pale face as white as paper watched it, but beads of sweat kept falling to the ground one by one, and it didn't take long for a piece of snow on the ground to melt a big hole alive.