How did he come about? "The boy was not angry. It was because his father was unable to take extra time. The boy took his leave first. If he had time in the future, he would be called to come to Grandpa Li's house again to bother him!" Ling Yun gave a respectful salute, took a step back, and turned around and was about to leave.

"No, no, boy Ling, wait, I've been convinced. I said, "I said it's not okay?" Seeing Ling Yun pulling away decisively, Li Chuan ran to him and stopped him.

In fact, the moment Li Chuan nodded with his head, Ling Yun slowly stopped, and saw the corner of his mouth slightly raised, with a look of success in his plan.

"Ahem, Grandpa Li, it's not because you said you didn't talk about anything. The little one just suddenly remembered that my father's body had recovered a lot and he no longer needed someone to take care of him." Ling Yun turned around and looked at Li Chuan with a smile.

"You kid, I'm so kind to you, and I'm even cheating me." Seeing his appearance, Li Chuan didn't know that he had been deceived by him, so he had to curse and blanch him.

Ling Yun smiled without saying a word, quietly waiting for his follow-up.

"Oh, it's really awesome." Li Chuan sighed for no reason, calmed down for a moment, and then slowly explained the cause and effect of the matter, "Actually, this is the case. I have an old friend..."

Looking back, time seems to be back to the age when I was studying.

As Li Chuan spoke, he brought out his many years of letters and exchanges. He didn't know if he didn't read them, and he was shocked when he saw them.

It turned out that when Li Chuan was young, a classmate always liked to cause trouble for him. Whether he was studying or endorsing his books, he always liked to compete with him.

The man's name was Wang Chubai. Because both of them were full of energy at that time, why was Li Chuan afraid of him? In the end, no one was convinced and liked to have a written test no matter what he did.

The two of them went back and forth, and they won and lost each other, but overall Li Chuan lost more.

Suddenly one day, Wang Chubai found a technique problem from somewhere and said yes. If he could solve it, he would be convinced. Later, he would say that he would not go west, and vice versa.

Seeing him so confidently, Li Chuan was distracted and thought to see how I stepped on you this time.

So he happily took the technique question he handed over, looked up and down, and thought about it, but still couldn't figure it out.

He was unwilling to admit defeat and held the yellow paper in his arms for three days before finally admitting his defeat.

But why would he give up? If he admits defeat like this, he will definitely be shorter when he meets him in the future.

So he searched all over the streets and alleys of the county town, and also searched for a skill question, handed him over, and said the harsh words he put down were like before Wang Chubai.

It can be imagined that Wang Chubaiduo did not solve it in the end.

When the two had an argument, they would come up with the technique questions to explain to each other. The original words were that you could solve them, but if you couldn't solve them, don't talk nonsense.

After this, Li Chuan stopped going to school until the end, and both of them had letters.

In addition to kind greetings and recent situations, there will be a skill problem in the second half, and there will be a harsh sentence: If you have the ability, you can solve it for me.

Over the years, the two of them have collected various techniques, one letter and one question, but most of them ended without any solution.

It was not until that year that he met Ling Yun, and the art questions he had accumulated for many years were wiped out.

He arranged each question that Ling Yun solved neatly, and as the subsequent letters were sent, he always accompanied the answers to the previous questions.

This abnormality attracted Wang Baichu's attention, and he didn't understand why he solved the technical problems he had accumulated over the years overnight.

So he began to find some more difficult techniques than before. Sure enough, Li Chuan's reply to the letter this time was much slower than before, and he said bluntly that he must be unable to find a helper.

Unexpectedly, when Li Chuan saw him ridicule, he began to retort, saying that if you have the ability, you can solve it? If you don’t have the ability, you still talk nonsense.

When Wang Baichuyi heard this, he asked someone to solve the problem and was also called capable?

Li Chuan smiled and said, "You can also find someone to help." Finding someone to help is also a skill. If you can't find it, don't let it be.

Wang Baichu: You are cruel...

Ling Yun couldn't help but feel ashamed when he looked at their correspondence.

Ling Yun couldn't help but look at him up and down, and said like two old children, smiling, "Grandpa Li, he has such ambitions that have not diminished back then!"

Feeling Ling Yun’s strange look, Li Chuan smiled embarrassedly, “You boy.”

Then he looked at him expectantly and said, "Boy Ling, look, you know the cause and effect, right?"

Li Chuan looked at him rubbing his hands and smiled. He did not look harsh in the classroom, but he looked more like an old man next door, with a kind face and amiable affable.

Ling Yun laughed, "Of course."

Just ask for help, how can it be considered cheating?

Besides, Li Chuan has already made it clear that you can find it if you have the ability. He believes that just by relying on this harsh words, Li Chuan's old friend will definitely find help regardless of some of them. This is the tacit understanding of the two people's confrontation for many years.

As his enlightenment teacher and grandfather next door, Li Chuan had no reason to lose.

Ling Yun, who opened the yellow paper again, took the paper, ink, pen and inkstone. Just as he was about to start writing, Li Chuan stepped forward and asked, "Boy Ling, are you not thinking about thinking before writing?"

"No, no, this kind of simple question is not needed."

As soon as these words were said, Li Chuan looked at him with aggrievedly. Why did this make him so uncomfortable?

When Ling Yun saw Li Chuan pouting in depressed mood, he realized that his words had hit him.

"Ah, I mean, I'll just calculate it on this yellow paper." Ling Yun hurriedly called.

Li Chuan pursed his lips and started to laugh this time.

So Ling Yun listed two systems of equations on yellow paper. Li Chuan took a breath when he saw it and said in confusion, "Boy Ling, how did you get this?"

Ling Yun scratched his head and thought to himself how I would teach you?

Can you tell at a glance?

If that's the case, he probably would have eaten Li Chuan's eyes.

Lingyun calmed for a while and said thoughtfully, "Well, from the question, we can see that hens can be placed in y, roosters, and tiny chickens (100-x-y)."

"What is this letter?"

Ling Yun was choking and speechless.

"It means unknown numbers." Ling Yun forced his explanation, but he didn't know that it would be fine if he didn't speak. As soon as he opened his mouth, he was full of words that Li Chuan couldn't understand.

"What is an unknown number?"

Lingyun:...

What is an unknown number?

A sentence suddenly appeared in Ling Yun's mind, and the gap between the two was like a natural barrier.

"That's right, that's... anyway, you just need to know what he got, we don't need to know what other meanings." Ling Yun had to pass by perfunctorily.

"Oh!" Li Chuan nodded thoughtfully.

"What about this?"

“…”

What a sin! What's this?

Until then, Ling Yun didn't know how to go home, and he was full of this in his mind. What is this? What is this? How did this come about?

Until he returned home, his mind still felt twisted by a rope, dizzy and messy.
Chapter completed!