"Eh, Ugly Cow and Huaiyu, are you two here?"

When he came to the teaching house, he saw the tall horse Dacheng Chumo and the polite Qin Huaiyu sitting in the back, Li Zexuan remembered that day Cheng Yanjin and other veterans entrusted their sons to the arithmetic hall, but he didn't expect these second generations of generals to come over today.

Cheng Chu silently drooped his head, and said weakly:

"Brother, I don't want to come, but my dad said, if I don't come, I'll break my leg, I thought he was scaring me, who knew that he came this morning this morning, my mother can't pull it, fortunately brother, I ran fast, otherwise I should be lying in the Imperial Doctor's Department now." Alas, Xiao Xuan, we were originally brothers, and now you suddenly became my teacher for no reason, this is really a fucking diaphragm! ”

Li Zexuan almost didn't laugh out loud when he heard Cheng Chumo's complaint, he really didn't expect Cheng Yanjin to be so cruel to his son.

He was about to say a few words to comfort him, when Qin Huaiyu on the side smiled and said: "Ugly cow, Uncle Cheng is also good for you, since you are here, you should study hard." Besides, I have just borrowed the notes of other classmates, and I have found that Xiao Xuan's new arithmetic does have many merits........"

"Stop, stop, Huaiyu, don't talk about it, you have good grades, of course you don't care, but look at me Lao Cheng, where do you look like a scholar! I just heard that the last five in the monthly exam of the school hall are going to clean the teaching house, and what kind of shame list will they enter, I really don't know which turtle son came up with a bad idea, but it killed my old Cheng! ”

Cheng Chu was silent and didn't wait for Qin Huaiyu to finish speaking, so he directly interrupted. He spoke so loudly that everyone in the church hall heard it, and the noisy church house instantly fell silent, except for Cheng Chumo, the three newcomers, all the other students looked at this god man who dared to speak wildly with a shocked expression.

Li Zexuan's old face darkened, and he kicked Cheng Chumo's thigh, "Groove, this idea is from Lao Tzu, if you get to the bottom five in the exam this month, you will sweep the teaching house for me for two months!" ”

Cheng Chumo was kicked for a moment, and then after listening to Li Zexuan's words, his eyes widened, his face was confused, and he stretched out his hand and said, "Hey, Xiaoxuan, don't!" What is the relationship between our brothers, do you need this? You're just going to let me go for a fart! ”

"Hahaha!"

When the students saw Cheng Chumo playing treasure, they couldn't help but laugh. As for the identities of Cheng Chumo and several people, many of them knew about it, and after asking them privately, they also knew it, they thought that these second generations of generals were quite arrogant, but they didn't expect Cheng Chumo to be so funny, and it was no different from ordinary people like them.

Li Zexuan ignored Cheng Chumo, looked at the black and fat young man next to Qin Huaiyu, and asked, "You are Yu Chi Baolin, right?" ”

The little fat scratched his head, and said with a smile: "Mmmm, I'm Yu Chi Baolin, and Mr. will call me Baolin!" ”

Li Zexuan nodded and encouraged: "Okay, Baolin, you study hard, if there is anything you don't understand, you can ask Tie Dan, or you can ask me directly." ”

Cheng Chumo muttered on the side: "Cut, he has something to learn, in the end, he doesn't want to compete with me for the last place!" ”

Li Zexuan was extremely angry, and reflexively slapped him in the head, "If you really take the first place in the exam, when the time comes, see how Uncle Cheng cleans you up, I don't recognize you as a shameful brother!" ”

Cheng Chumo rubbed his head, like an angry little daughter-in-law, looked at him with an aggrieved face, and muttered, "Xiaoxuan, you are not kind!" Brother, I usually treat you so well, how can you be like this? ”

"What's wrong? Even this king has to do what Mr. wants to do here, ugly cow, what do you want? ”

Li Tai happened to come to the school hall today, and as soon as he came in, he heard Cheng Chumo's aggrieved complaints, and couldn't help but interject.

Cheng Chumo looked at Li Tai with a look of surprise, opened his mouth, wanted to say something, but in the end he didn't say anything, held his forehead with his hand, sighed, and seemed to have completely accepted his fate.

..............

"Alright, let's start class! Students, take out your homework, Tie Dan, you go and collect the homework for me! ”

There were a few bells and drums outside, which Li Zexuan hired a husband to call the "class bell" for the arithmetic hall. Hearing the class bell ringing, Li Zexuan started a new day's classes.

"Yes, Master!"

Tie Dan stood up and collected the homework one by one. When he came in the morning, he had just handed out new books to all the students one by one, and he was Li Zexuan's personal disciple, so the students had a good attitude towards him.

After a while, Li Zexuan took everyone's homework and looked at it in front of the court, and after a while, he frowned and shouted: "Wang Meng, you get up for me!" ”

Wang Meng sat down and waited for Li Zexuan to praise him, his homework was something he had thought about for a long time, but listening to Li Zexuan's current tone, it was obvious that he didn't want to praise him.

Wang Meng stood up with a stunned face and stammered, "First... Mr! ”

"Tell us about the method you wrote on your homework?"

Wang Mengna Khan said: "Eh, I.... What I wrote was, sawing down the ginkgo tree, and then putting a few rulers together on the ground to measure it! ”

"Hahaha"

The students burst into laughter.

Cheng Chumo was also happy, he laughed and shouted: "Haha, Brother Wang Meng, with you, it seems that I don't have to take the first place in the exam, haha!" ”

Li Zexuan quieted everyone, looked at Wang Meng and said, "Now do you know that you are wrong?" I teach you arithmetic so that you can use what you have learned to use it in your life, not to rely on brute force for everything as you did before! ”

Wang Meng hesitated for a while, and said unconvinced: "But my father said that when he was doing carpentry work, he used this method to measure the length of the trunk!" ”

Li Zexuan: ...............

...............

After inking with Wang Meng for a long time, he finally persuaded this tenacious goods, Li Zexuan began to evaluate the winners of this assignment, and all the students were shocked and listened carefully.

"After my careful consideration, the best job in this assignment is Meng Wenhao, his method is to measure the length of the shadow of the person and the tree at the same time, and multiply the length of the shadow by the ratio of the shadow to the actual height of the human body, and get the true length of the ginkgo tree.

In addition to Meng Wenhao, Li Tai's method is also outstanding, he is to make the eyes close to the ground, and then move a ruler to the top of the ruler, when it is in the same straight line with the human eye and the tip of the tree, according to the ratio of the distance from the tree to the human eye and the distance from the city ruler to the human eye, multiply the length of the ruler, and get the true height of the ginkgo tree.

The method of the two of them is the smartest and the best, but in comparison, I think it is Meng Wenhao's method that is simpler and more accurate, and he deserves to be the first. Let's give a round of applause to these two students! ”

..............

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(End of chapter)