Di Zhixun shook his head helplessly and said, "Where did any demon fire come from, it's just that people are doing it." ”

Di Renjie's eyes flickered, and his eyes were full of curiosity about many things here.

On a high platform at the Lantern Festival, there were many people standing around.

The scholars and scholars present were all waiting for Li Zheng's arrival.

But until the time of the fast son, I didn't see Li Zhenglai, let alone the leader of the five surnames.

Neither side came.

"What does that mean?"

"That's it."

Someone said: "There was a fire in Chang'an today, and the scholars in Chang'an City couldn't come, so he Li Zheng couldn't help but come." ”

"That's right, he just wants to be a turtle with a shrunken head?"

"Didn't Li Zheng dare to come, let us wait here all night in vain?"

"Let's go to Jingyang to ask for an explanation!"

"Let's go!"

Di Renjie watched the crowd go in the direction of Jingyang, Di Renjie asked in a low voice, "Dad, what are they going to do?" ”

Di Zhixun smiled and said, "Let's go, let's go and have a look." ”

At the entrance of the village in Jingyang County, there are still people guarding here.

A large group of scholars and scholars came here and tried to enter the village but were stopped.

Li Yifu rushed over and asked, "Everyone, what do you want to do?" ”

"Let's come to see Li Zheng, can he Li Zheng want to be a turtle with a shrunken head today?"

"That's right! said that the good lantern will compete, why didn't he Li Zheng come! ”

After listening to their words, Li Yifu walked back to the village, and after a while, Da Niu came to everyone.

First, he saluted slightly, and Da Niu said to everyone: "The teacher said that today's incident in Chang'an has made many people unable to come to the Lantern Festival. ”

"Victory or not?"

As soon as the words came out, the crowd immediately exploded.

"Does he Li Zheng just ignore us like this?"

Da Niu took the sign handed by Li Yifu, stood on the ground and said, "If you want to see the teacher, you can, but you have to pass me first." ”

"You! A stinky boy, I advise you to let Li Zheng come out as soon as possible, what kind of hero is hiding in the village. ”

"Yes, what kind of hero."

Da Niu pointed to the sign standing aside and said, "If any of you can answer my question, you can go to the teacher." ”

Everyone turned their heads to look at the sign standing on the side, which prominently wrote five words: "A question is consistent money." ”

Di Zhixun looked funny, what kind of score did this Li Zheng really pose.

A question consistent with money?

This kid is really so confident that a kid who looks like he has not dried up can deal with so many scholars.

Holding his son, Dickerson whispered, "Look at it and don't look around." ”

Di Renjie obediently stopped his gaze and followed his father's gaze, observing the person standing in front of a group of scholars and scholars.

Some people want to turn around and leave now, but some people are unwilling and look at Da Niu with an unconvinced face.

A middle-aged man who looked polite stepped forward and said, "Are you a student of Li Zheng?" ”

"Exactly." The bull nodded.

"Okay, the old man wants to see what kind of questions you can come up with to make it difficult for the old man?"

Da Niu pointed to the sign on the side, and asked the same question.

This middle-aged scholar took out his money bag and handed it to Da Niu, "The old man should have consistent money here." ”

Da Niu opened the money bag and looked at it, and then nodded after weighing the weight.

"Please ask the question."

"Listen up, then." Da Niu cleared his throat and said with the appearance of an adult: "I can buy a total of 1,000 pears and fruits with 999 yuan, and I can buy nine pears with 11 yuan." Fruit, four dollars can buy seven. Q: How many pears and fruits do you buy, and how much do you pay for each? ”

"This ......," the middle-aged scholar immediately calculated.

The scholars and scholars below were also discussing for a while, and they couldn't answer for a long time.

"Little brother, can you tell the question again?"

Da Niu repeated the title again, and someone at the bottom picked up a pen to write down the title and circulated it to each other.

"Have you figured it out?" The middle-aged scholar who paid the money immediately launched an off-site request for help.

A group of people down there are scribbling the math.

Da Niu felt a little proud, this is the question that the teacher taught him a few days ago, and he also made up the numbers one by one, when will the nine hundred and ninety-nine numbers be made, in fact, it is not difficult to know the method of solving the problem.

The teacher also said that if Li Chunfeng was to solve it, it would probably be solved.

Now Li Chunfeng may still be in Chang'an City.

The middle-aged scholar stepped back again and again and said, "Give the old man some time." ”

The more interesting Di Zhixon found it to be that a teenager came up with a topic, which stumped nearly a hundred scholars and scholars present.

Da Niu looked at everyone and said, "Is there anyone else coming?" ”

Another scholar stepped forward and said, "I'll try it." ”

After paying the usual money, the scholar said, "Please ask the question." ”

After roughly confirming the amount of money, Da Niu said, "Then you listen well." ”

"General Han Xin trains troops, one column for every three people, one person for each other, one column for every five people, and two people for the remainder. There is a column for every seven people, and there are four remaining people, and there are one column for thirteen people, and there are six people left. How many soldiers asked? ”

“……”

As soon as the topic came out, the scene was quiet again.

"It's all about what it's about." Someone scratched his ears and cheeks.

Someone shook his hand and left, "It's too bullying!" ”

"Is this a human calculus?"

Someone said loudly: "We all know that Hou of Jingyang County has quite high achievements in arithmetic, and even Li Chunfeng admires it, and he has the ability to come up with a topic that is not arithmetic." ”

Someone coaxed: "That's it! If you have the ability, don't come up with arithmetic questions. ”

Da Niu smiled and said, "Then I'll come up with a simple question?" ”

Immediately, someone handed over the money and said, "Please ask the question." ”

The big cow took a piece of charcoal and drew nine dots on a wooden board to form a nine-square grid, and the origin points were three rows and three columns, forming a square.

After the drawing, Da Niu said, "Now, use a straight line to connect these nine dots." ”

"What's so hard about that?" Immediately someone said.

Da Niu then added: "Four lines in series nine points, one stroke. ”

"Easy!"

As soon as the words fell, someone immediately started to draw them, and the topic was too simple to be full of confidence.

But when I actually painted it, I was stunned, and the four straight lines connected nine points in series could not be completed at all.

Someone tried several times, but it still didn't work.

The scholars and scholars all looked at each other, but no one drew them.

Gradually, someone noticed the problem.

"It's simply not going to be done in one go."

Di Renjie also drew dots on the ground, pondering how this picture should be drawn.

Starting from the beginning, it takes four straight lines to connect the four sides of the periphery, and there must be a fifth straight line to connect the points of the middle line.

Whether it is vertically or horizontally, the fifth line is indispensable.

Looking up at his father, Di Zhixun said, "Dad, how should this be drawn, the child feels that it can't be connected without a fifth straight line." ”